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| author | Tom Rini <trini@konsulko.com> | 2020-04-27 17:50:35 -0400 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-04-27 17:50:35 -0400 |
| commit | 9b20a794a71151a3a690242b5161b4ca5effd3e7 (patch) | |
| tree | 6b212ab26b722b8fc7e92218e1eafa22073e96f2 /arch | |
| parent | 37b02289029853033fd662cd4b010336cfb282ad (diff) | |
| parent | 3fd023143237a5271a21ccec4b94440df257a5a7 (diff) | |
| download | u-boot-9b20a794a71151a3a690242b5161b4ca5effd3e7.zip u-boot-9b20a794a71151a3a690242b5161b4ca5effd3e7.tar.gz u-boot-9b20a794a71151a3a690242b5161b4ca5effd3e7.tar.bz2 | |
Merge tag 'mips-pull-2020-04-27' of https://gitlab.denx.de/u-boot/custodians/u-boot-mips
- brcmnand: fix missing code path from Linux driver
- bmips: fix build error when disabling USB
- mips: add option to restore original exception vector base
- mips: fix off-by-one error when clearing gd_data
- mips: minor fixes for compatibility with generic SPL framework
- spl: refactor legacy image loading
- spl: add LZMA decompression support for legacy images
- Makefile: add target to build LZMA compressed U-Boot images
- mtmips: refactor and rewrite low-level init code
- mtmips: add and enable SPL support with LZMA
- mtmips: add support for MT7628 reference board
- mtmips: add support for VoCore/VoCore2 board
Diffstat (limited to 'arch')
32 files changed, 1673 insertions, 821 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index a3ae603..48e754c 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -98,6 +98,7 @@ config ARCH_MTMIPS select SUPPORTS_CPU_MIPS32_R2 select SUPPORTS_LITTLE_ENDIAN select SYSRESET + select SUPPORT_SPL config ARCH_JZ47XX bool "Support Ingenic JZ47xx" @@ -287,6 +288,60 @@ config MIPS_RELOCATION_TABLE_SIZE If unsure, leave at the default value. +config RESTORE_EXCEPTION_VECTOR_BASE + bool "Restore exception vector base before booting linux kernel" + default n + help + In U-Boot the exception vector base will be moved to top of memory, + to be used to display register dump when exception occurs. + But some old linux kernel does not honor the base set in CP0_EBASE. + A modified exception vector base will cause kernel crash. + + This option will restore the exception vector base to its previous + value. + + If unsure, say N. + +config OVERRIDE_EXCEPTION_VECTOR_BASE + bool "Override the exception vector base to be restored" + depends on RESTORE_EXCEPTION_VECTOR_BASE + default n + help + Enable this option if you want to use a different exception vector + base rather than the previously saved one. + +config NEW_EXCEPTION_VECTOR_BASE + hex "New exception vector base" + depends on OVERRIDE_EXCEPTION_VECTOR_BASE + range 0x80000000 0xbffff000 + default 0x80000000 + help + The exception vector base to be restored before booting linux kernel + +config INIT_STACK_WITHOUT_MALLOC_F + bool "Do not reserve malloc space on initial stack" + default n + help + Enable this option if you don't want to reserve malloc space on + initial stack. This is useful if the initial stack can't hold large + malloc space. Platform should set the malloc_base later when DRAM is + ready to use. + +config SPL_INIT_STACK_WITHOUT_MALLOC_F + bool "Do not reserve malloc space on initial stack in SPL" + default n + help + Enable this option if you don't want to reserve malloc space on + initial stack. This is useful if the initial stack can't hold large + malloc space. Platform should set the malloc_base later when DRAM is + ready to use. + +config SPL_LOADER_SUPPORT + bool + default n + help + Enable this option if you want to use SPL loaders without DM enabled. + endmenu menu "OS boot interface" @@ -389,6 +444,15 @@ config MIPS_INIT_STACK_IN_SRAM lowlevel_init. Thus lowlevel_init does not need to be implemented in assembler. +config MIPS_SRAM_INIT + bool + default n + depends on MIPS_INIT_STACK_IN_SRAM + help + Select this if the SRAM for initial stack needs to be initialized + before it can be used. If enabled, a function mips_sram_init() will + be called just before setup_stack_gd. + config SYS_DCACHE_SIZE int default 0 diff --git a/arch/mips/cpu/start.S b/arch/mips/cpu/start.S index 1d21b23..6de9a2f 100644 --- a/arch/mips/cpu/start.S +++ b/arch/mips/cpu/start.S @@ -59,7 +59,8 @@ sp, sp, GD_SIZE # reserve space for gd and sp, sp, t0 # force 16 byte alignment move k0, sp # save gd pointer -#if CONFIG_VAL(SYS_MALLOC_F_LEN) +#if CONFIG_VAL(SYS_MALLOC_F_LEN) && \ + !CONFIG_IS_ENABLED(INIT_STACK_WITHOUT_MALLOC_F) li t2, CONFIG_VAL(SYS_MALLOC_F_LEN) PTR_SUBU \ sp, sp, t2 # reserve space for early malloc @@ -71,10 +72,12 @@ move t0, k0 1: PTR_S zero, 0(t0) + PTR_ADDIU t0, PTRSIZE blt t0, t1, 1b - PTR_ADDIU t0, PTRSIZE + nop -#if CONFIG_VAL(SYS_MALLOC_F_LEN) +#if CONFIG_VAL(SYS_MALLOC_F_LEN) && \ + !CONFIG_IS_ENABLED(INIT_STACK_WITHOUT_MALLOC_F) PTR_S sp, GD_MALLOC_BASE(k0) # gd->malloc_base offset #endif .endm @@ -216,6 +219,13 @@ wr_done: #endif #ifdef CONFIG_MIPS_INIT_STACK_IN_SRAM +#ifdef CONFIG_MIPS_SRAM_INIT + /* Initialize the SRAM first */ + PTR_LA t9, mips_sram_init + jalr t9 + nop +#endif + /* Set up initial stack and global data */ setup_stack_gd diff --git a/arch/mips/cpu/u-boot-spl.lds b/arch/mips/cpu/u-boot-spl.lds index d08d622..28ea4f2 100644 --- a/arch/mips/cpu/u-boot-spl.lds +++ b/arch/mips/cpu/u-boot-spl.lds @@ -27,7 +27,7 @@ SECTIONS *(SORT_BY_ALIGNMENT(.sdata*)) } > .spl_mem -#ifdef CONFIG_SPL_DM +#if defined(CONFIG_SPL_DM) || defined(CONFIG_SPL_LOADER_SUPPORT) . = ALIGN(4); .u_boot_list : { KEEP(*(SORT(.u_boot_list*))); @@ -37,6 +37,8 @@ SECTIONS . = ALIGN(4); __image_copy_end = .; + _image_binary_end = .; + .bss (NOLOAD) : { __bss_start = .; *(.bss*) diff --git a/arch/mips/dts/Makefile b/arch/mips/dts/Makefile index c9d7559..f711e9f 100644 --- a/arch/mips/dts/Makefile +++ b/arch/mips/dts/Makefile @@ -17,11 +17,13 @@ dtb-$(CONFIG_BOARD_COMTREND_CT5361) += comtrend,ct-5361.dtb dtb-$(CONFIG_BOARD_COMTREND_VR3032U) += comtrend,vr-3032u.dtb dtb-$(CONFIG_BOARD_COMTREND_WAP5813N) += comtrend,wap-5813n.dtb dtb-$(CONFIG_BOARD_HUAWEI_HG556A) += huawei,hg556a.dtb +dtb-$(CONFIG_BOARD_MT7628_RFB) += mediatek,mt7628-rfb.dtb dtb-$(CONFIG_BOARD_NETGEAR_CG3100D) += netgear,cg3100d.dtb dtb-$(CONFIG_BOARD_NETGEAR_DGND3700V2) += netgear,dgnd3700v2.dtb dtb-$(CONFIG_BOARD_SAGEM_FAST1704) += sagem,f@st1704.dtb dtb-$(CONFIG_BOARD_SFR_NB4_SER) += sfr,nb4-ser.dtb dtb-$(CONFIG_BOARD_TPLINK_WDR4300) += tplink_wdr4300.dtb +dtb-$(CONFIG_BOARD_VOCORE2) += vocore_vocore2.dtb dtb-$(CONFIG_TARGET_JZ4780_CI20) += ci20.dtb dtb-$(CONFIG_SOC_LUTON) += luton_pcb090.dtb luton_pcb091.dtb dtb-$(CONFIG_SOC_OCELOT) += ocelot_pcb120.dtb ocelot_pcb123.dtb diff --git a/arch/mips/dts/mediatek,mt7628-rfb.dts b/arch/mips/dts/mediatek,mt7628-rfb.dts new file mode 100644 index 0000000..6ff36da --- /dev/null +++ b/arch/mips/dts/mediatek,mt7628-rfb.dts @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +/dts-v1/; + +#include "mt7628a.dtsi" + +/ { + compatible = "mediatek,mt7628-rfb", "ralink,mt7628a-soc"; + model = "MediaTek MT7628 RFB"; + + aliases { + serial0 = &uart0; + spi0 = &spi0; + }; + + chosen { + stdout-path = &uart0; + }; +}; + +&pinctrl { + state_default: pin_state { + pleds { + groups = "p0led", "p1led", "p2led", "p3led", "p4led"; + function = "led"; + }; + }; +}; + +&uart0 { + status = "okay"; +}; + +&spi0 { + status = "okay"; + num-cs = <2>; + + spi-flash@0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "jedec,spi-nor"; + spi-max-frequency = <25000000>; + reg = <0>; + }; +}; + +ð { + mediatek,wan-port = <0>; + + pinctrl-names = "default"; + pinctrl-0 = <&ephy_router_mode>; +}; + +&mmc { + bus-width = <4>; + cap-sd-highspeed; + + pinctrl-names = "default"; + pinctrl-0 = <&sd_router_mode>; + + status = "okay"; +}; diff --git a/arch/mips/dts/mt7628-u-boot.dtsi b/arch/mips/dts/mt7628-u-boot.dtsi new file mode 100644 index 0000000..eea5dc6 --- /dev/null +++ b/arch/mips/dts/mt7628-u-boot.dtsi @@ -0,0 +1,38 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +&palmbus { + u-boot,dm-pre-reloc; +}; + +&reboot { + u-boot,dm-pre-reloc; +}; + +&clkctrl { + u-boot,dm-pre-reloc; +}; + +&rstctrl { + u-boot,dm-pre-reloc; +}; + +&pinctrl { + u-boot,dm-pre-reloc; +}; + +&uart0 { + u-boot,dm-pre-reloc; +}; + +&uart1 { + u-boot,dm-pre-reloc; +}; + +&uart2 { + u-boot,dm-pre-reloc; +}; diff --git a/arch/mips/dts/mt7628a.dtsi b/arch/mips/dts/mt7628a.dtsi index 76a80c8..6baa63a 100644 --- a/arch/mips/dts/mt7628a.dtsi +++ b/arch/mips/dts/mt7628a.dtsi @@ -33,7 +33,7 @@ #clock-cells = <0>; }; - palmbus@10000000 { + palmbus: palmbus@10000000 { compatible = "palmbus", "simple-bus"; reg = <0x10000000 0x200000>; ranges = <0x0 0x10000000 0x1FFFFF>; @@ -46,11 +46,11 @@ reg = <0x0 0x100>; }; - syscon-reboot { - compatible = "syscon-reboot"; - regmap = <&sysc>; - offset = <0x34>; - mask = <0x1>; + reboot: resetctl-reboot { + compatible = "resetctl-reboot"; + + resets = <&rstctrl MT7628_SYS_RST>; + reset-names = "sysreset"; }; clkctrl: clkctrl@0x2c { @@ -110,6 +110,11 @@ function = "uart2"; }; + uart2_pwm_pins: uart2_pwm_pins { + groups = "spis"; + function = "pwm_uart2"; + }; + i2c_pins: i2c_pins { groups = "i2c"; function = "i2c"; diff --git a/arch/mips/dts/vocore_vocore2.dts b/arch/mips/dts/vocore_vocore2.dts new file mode 100644 index 0000000..3502e4b --- /dev/null +++ b/arch/mips/dts/vocore_vocore2.dts @@ -0,0 +1,85 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2019 Mauro Condarelli <mc5686@mclink.it> + */ + +/dts-v1/; + +#include "mt7628a.dtsi" +#include <dt-bindings/gpio/gpio.h> + +/ { + compatible = "vocore,vocore2", "ralink,mt7628a-soc"; + model = "VoCore2"; + + aliases { + serial0 = &uart2; + spi0 = &spi0; + }; + + memory@0 { + device_type = "memory"; + reg = <0x0 0x08000000>; + }; + leds { + compatible = "gpio-leds"; + + power { + label = "vocore:power"; + gpios = <&gpio1 12 GPIO_ACTIVE_HIGH>; + default-state = "off"; + }; + }; + + chosen { + bootargs = "console=ttyS2,115200"; + stdout-path = &uart2; + }; +}; + +&pinctrl { + state_default: pin_state { + p0led { + groups = "p0led_a"; + function = "led"; + }; + }; +}; + +&uart2 { + status = "okay"; + + pinctrl-names = "default"; + pinctrl-0 = <&uart2_pwm_pins>; +}; + +&spi0 { + status = "okay"; + nor0: spi-flash@0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "jedec,spi-nor"; + spi-max-frequency = <25000000>; + reg = <0>; + }; +}; + +ð { + status = "okay"; + + pinctrl-names = "default"; + pinctrl-0 = <&ephy_iot_mode>; + mediatek,poll-link-phy = <0>; +}; + +&mmc { + status = "okay"; + + bus-width = <4>; + max-frequency = <48000000>; + cap-sd-highspeed; + cap-mmc-highspeed; + + pinctrl-names = "default"; + pinctrl-0 = <&sd_iot_mode>; +}; diff --git a/arch/mips/include/asm/global_data.h b/arch/mips/include/asm/global_data.h index 7b4ad08..4c30fab 100644 --- a/arch/mips/include/asm/global_data.h +++ b/arch/mips/include/asm/global_data.h @@ -27,6 +27,9 @@ struct arch_global_data { #ifdef CONFIG_MIPS_L2_CACHE unsigned short l2_line_size; #endif +#ifdef CONFIG_ARCH_MTMIPS + unsigned long timer_freq; +#endif }; #include <asm-generic/global_data.h> diff --git a/arch/mips/include/asm/u-boot-mips.h b/arch/mips/include/asm/u-boot-mips.h index 88438b9..8b37cc4 100644 --- a/arch/mips/include/asm/u-boot-mips.h +++ b/arch/mips/include/asm/u-boot-mips.h @@ -9,4 +9,6 @@ void except_vec_ejtag_debug(void); int arch_misc_init(void); +void trap_restore(void); + #endif /* _U_BOOT_MIPS_H_ */ diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile index 24a72d9..9ee1fcb 100644 --- a/arch/mips/lib/Makefile +++ b/arch/mips/lib/Makefile @@ -12,5 +12,6 @@ obj-y += traps.o obj-$(CONFIG_CMD_BOOTM) += bootm.o obj-$(CONFIG_CMD_GO) += boot.o +obj-$(CONFIG_SPL_BUILD) += spl.o lib-$(CONFIG_USE_PRIVATE_LIBGCC) += ashldi3.o ashrdi3.o lshrdi3.o diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c index 8c0d767..f1db6d2 100644 --- a/arch/mips/lib/bootm.c +++ b/arch/mips/lib/bootm.c @@ -294,6 +294,9 @@ static void boot_jump_linux(bootm_headers_t *images) bootstage_report(); #endif + if (CONFIG_IS_ENABLED(RESTORE_EXCEPTION_VECTOR_BASE)) + trap_restore(); + if (images->ft_len) kernel(-2, (ulong)images->ft_addr, 0, 0); else diff --git a/arch/mips/lib/spl.c b/arch/mips/lib/spl.c new file mode 100644 index 0000000..7ba3e53 --- /dev/null +++ b/arch/mips/lib/spl.c @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020 Stefan Roese <sr@denx.de> + */ + +#include <common.h> +#include <cpu_func.h> +#include <spl.h> + +void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image) +{ + typedef void __noreturn (*image_entry_noargs_t)(void); + image_entry_noargs_t image_entry = + (image_entry_noargs_t)spl_image->entry_point; + + /* Flush cache before jumping to application */ + flush_cache((unsigned long)spl_image->load_addr, spl_image->size); + + debug("image entry point: 0x%lx\n", spl_image->entry_point); + image_entry(); +} diff --git a/arch/mips/lib/traps.c b/arch/mips/lib/traps.c index b8568c0..8fff754 100644 --- a/arch/mips/lib/traps.c +++ b/arch/mips/lib/traps.c @@ -20,6 +20,8 @@ DECLARE_GLOBAL_DATA_PTR; +static unsigned long saved_ebase; + static void show_regs(const struct pt_regs *regs) { const int field = 2 * sizeof(unsigned long); @@ -102,7 +104,24 @@ void trap_init(ulong reloc_addr) set_handler(0x180, &except_vec3_generic, 0x80); set_handler(0x280, &except_vec_ejtag_debug, 0x80); + saved_ebase = read_c0_ebase() & 0xfffff000; + write_c0_ebase(ebase); clear_c0_status(ST0_BEV); execution_hazard_barrier(); } + +void trap_restore(void) +{ + set_c0_status(ST0_BEV); + execution_hazard_barrier(); + +#ifdef CONFIG_OVERRIDE_EXCEPTION_VECTOR_BASE + write_c0_ebase(CONFIG_NEW_EXCEPTION_VECTOR_BASE & 0xfffff000); +#else + write_c0_ebase(saved_ebase); +#endif + + clear_c0_status(ST0_BEV); + execution_hazard_barrier(); +} diff --git a/arch/mips/mach-mtmips/Kconfig b/arch/mips/mach-mtmips/Kconfig index c8dcf19..737de2c 100644 --- a/arch/mips/mach-mtmips/Kconfig +++ b/arch/mips/mach-mtmips/Kconfig @@ -7,14 +7,52 @@ config SYS_MALLOC_F_LEN config SYS_SOC default "mt7628" if SOC_MT7628 +config SYS_DCACHE_SIZE + default 32768 + +config SYS_DCACHE_LINE_SIZE + default 32 + +config SYS_ICACHE_SIZE + default 65536 + +config SYS_ICACHE_LINE_SIZE + default 32 + +config SYS_TEXT_BASE + default 0x9c000000 if !SPL + default 0x80200000 if SPL + +config SPL_TEXT_BASE + default 0x9c000000 + +config SPL_PAYLOAD + default "u-boot-lzma.img" if SPL_LZMA + +config BUILD_TARGET + default "u-boot-with-spl.bin" if SPL + choice prompt "MediaTek MIPS SoC select" config SOC_MT7628 bool "MT7628" select MIPS_L1_CACHE_SHIFT_5 + select MIPS_INIT_STACK_IN_SRAM + select MIPS_SRAM_INIT + select SYS_MIPS_CACHE_INIT_RAM_LOAD select PINCTRL_MT7628 select MTK_SERIAL + select SYSRESET_RESETCTL + select SPL_SEPARATE_BSS if SPL + select SPL_INIT_STACK_WITHOUT_MALLOC_F if SPL + select SPL_LOADER_SUPPORT if SPL + select SPL_OF_CONTROL if SPL_DM + select SPL_SIMPLE_BUS if SPL_DM + select SPL_DM_SERIAL if SPL_DM + select SPL_CLK if SPL_DM && SPL_SERIAL_SUPPORT + select SPL_SYSRESET if SPL_DM + select SPL_OF_LIBFDT if SPL_OF_CONTROL help This supports MediaTek MT7628/MT7688. @@ -27,7 +65,6 @@ config BOARD_GARDENA_SMART_GATEWAY_MT7688 bool "GARDENA smart Gateway" depends on SOC_MT7628 select BOARD_LATE_INIT - select SUPPORTS_BOOT_RAM help GARDENA smart Gateway boards have a MT7688 SoC with 128 MiB of RAM and 8 MiB of flash (SPI NOR) and additional SPI NAND storage. @@ -35,7 +72,6 @@ config BOARD_GARDENA_SMART_GATEWAY_MT7688 config BOARD_LINKIT_SMART_7688 bool "LinkIt Smart 7688" depends on SOC_MT7628 - select SUPPORTS_BOOT_RAM help Seeed LinkIt Smart 7688 boards have a MT7688 SoC with 128 MiB of RAM and 32 MiB of flash (SPI). @@ -43,96 +79,36 @@ config BOARD_LINKIT_SMART_7688 ethernet ports, 1 USB port, 1 UART, GPIO buttons and LEDs, and a MT7688 (PCIe). -endchoice - -choice - prompt "Boot mode" - -config BOOT_RAM - bool "RAM boot" - depends on SUPPORTS_BOOT_RAM - help - This builds an image that is linked to a RAM address. It can be used - for booting from CFE via TFTP using an ELF image, but it can also be - booted from RAM by other bootloaders using a BIN image. - -config BOOT_ROM - bool "ROM boot" - depends on SUPPORTS_BOOT_RAM - help - This builds an image that is linked to a ROM address. It can be - used as main bootloader image which is programmed onto the onboard - flash storage (SPI NOR). - -endchoice - -choice - prompt "DDR2 size" - -config ONBOARD_DDR2_SIZE_256MBIT - bool "256MBit (32MByte) total size" - depends on BOOT_ROM - help - Use 256MBit (32MByte) of DDR total size - -config ONBOARD_DDR2_SIZE_512MBIT - bool "512MBit (64MByte) total size" - depends on BOOT_ROM - help - Use 512MBit (64MByte) of DDR total size - -config ONBOARD_DDR2_SIZE_1024MBIT - bool "1024MBit (128MByte) total size" - depends on BOOT_ROM - help - Use 1024MBit (128MByte) of DDR total size - -config ONBOARD_DDR2_SIZE_2048MBIT - bool "2048MBit (256MByte) total size" - depends on BOOT_ROM - help - Use 2048MBit (256MByte) of DDR total size - -endchoice - -choice - prompt "DDR2 chip width" - -config ONBOARD_DDR2_CHIP_WIDTH_8BIT - bool "8bit DDR chip width" - depends on BOOT_ROM +config BOARD_MT7628_RFB + bool "MediaTek MT7628 RFB" + depends on SOC_MT7628 help - Use DDR chips with 8bit width + The reference design of MT7628. The board has 128 MiB DDR2, 8 MiB + SPI-NOR flash, 1 built-in switch with 5 ports, 1 UART, 1 USB host, + 1 SDXC, 1 PCIe socket and JTAG pins. -config ONBOARD_DDR2_CHIP_WIDTH_16BIT - bool "16bit DDR chip width" - depends on BOOT_ROM +config BOARD_VOCORE2 + bool "VoCore2" + depends on SOC_MT7628 + select SPL_SERIAL_SUPPORT + select SPL_UART2_SPIS_PINMUX help - Use DDR chips with 16bit width + VoCore VoCore2 board has a MT7628 SoC with 128 MiB of RAM + and 16 MiB of flash (SPI). endchoice -choice - prompt "DDR2 bus width" - -config ONBOARD_DDR2_BUS_WIDTH_16BIT - bool "16bit DDR bus width" - depends on BOOT_ROM +config SPL_UART2_SPIS_PINMUX + bool "Use alternative pinmux for UART2 in SPL stage" + depends on SPL_SERIAL_SUPPORT + default n help - Use 16bit DDR bus width - -config ONBOARD_DDR2_BUS_WIDTH_32BIT - bool "32bit DDR bus width" - depends on BOOT_ROM - help - Use 32bit DDR bus width - -endchoice - -config SUPPORTS_BOOT_RAM - bool + Select this if the UART2 of your board is connected to GPIO 16/17 + (shared with SPIS) rather than the usual GPIO 20/21. source "board/gardena/smart-gateway-mt7688/Kconfig" +source "board/mediatek/mt7628/Kconfig" source "board/seeed/linkit-smart-7688/Kconfig" +source "board/vocore/vocore2/Kconfig" endmenu diff --git a/arch/mips/mach-mtmips/Makefile b/arch/mips/mach-mtmips/Makefile index 1f3e65e..a7e6a66 100644 --- a/arch/mips/mach-mtmips/Makefile +++ b/arch/mips/mach-mtmips/Makefile @@ -1,8 +1,8 @@ # SPDX-License-Identifier: GPL-2.0+ obj-y += cpu.o +obj-y += ddr_init.o +obj-y += ddr_cal.o +obj-$(CONFIG_SPL_BUILD) += spl.o -ifndef CONFIG_SKIP_LOWLEVEL_INIT -obj-y += ddr_calibrate.o -obj-y += lowlevel_init.o -endif +obj-$(CONFIG_SOC_MT7628) += mt7628/ diff --git a/arch/mips/mach-mtmips/cpu.c b/arch/mips/mach-mtmips/cpu.c index 8976ef5..459a967 100644 --- a/arch/mips/mach-mtmips/cpu.c +++ b/arch/mips/mach-mtmips/cpu.c @@ -4,69 +4,17 @@ */ #include <common.h> -#include <dm.h> -#include <init.h> #include <malloc.h> -#include <ram.h> -#include <wdt.h> -#include <asm/io.h> #include <linux/io.h> #include <linux/sizes.h> -#include "mt76xx.h" -#define STR_LEN 6 - -#ifdef CONFIG_BOOT_ROM -int mach_cpu_init(void) -{ - ddr_calibrate(); - - return 0; -} -#endif +DECLARE_GLOBAL_DATA_PTR; int dram_init(void) { +#ifdef CONFIG_SKIP_LOWLEVEL_INIT gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE, SZ_256M); - - return 0; -} - -int print_cpuinfo(void) -{ - static const char * const boot_str[] = { "PLL (3-Byte SPI Addr)", - "PLL (4-Byte SPI Addr)", - "XTAL (3-Byte SPI Addr)", - "XTAL (4-Byte SPI Addr)" }; - const void *blob = gd->fdt_blob; - void __iomem *sysc_base; - char buf[STR_LEN + 1]; - fdt_addr_t base; - fdt_size_t size; - char *str; - int node; - u32 val; - - /* Get system controller base address */ - node = fdt_node_offset_by_compatible(blob, -1, "ralink,mt7620a-sysc"); - if (node < 0) - return -FDT_ERR_NOTFOUND; - - base = fdtdec_get_addr_size_auto_noparent(blob, node, "reg", - 0, &size, true); - if (base == FDT_ADDR_T_NONE) - return -EINVAL; - - sysc_base = ioremap_nocache(base, size); - - str = (char *)sysc_base + MT76XX_CHIPID_OFFS; - snprintf(buf, STR_LEN + 1, "%s", str); - val = readl(sysc_base + MT76XX_CHIP_REV_ID_OFFS); - printf("CPU: %-*s Rev %ld.%ld - ", STR_LEN, buf, - (val & GENMASK(11, 8)) >> 8, val & GENMASK(3, 0)); - - val = (readl(sysc_base + MT76XX_SYSCFG0_OFFS) & GENMASK(3, 1)) >> 1; - printf("Boot from %s\n", boot_str[val]); +#endif return 0; } diff --git a/arch/mips/mach-mtmips/ddr_cal.c b/arch/mips/mach-mtmips/ddr_cal.c new file mode 100644 index 0000000..71a53c3 --- /dev/null +++ b/arch/mips/mach-mtmips/ddr_cal.c @@ -0,0 +1,205 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +#include <common.h> +#include <asm/addrspace.h> +#include <asm/cacheops.h> +#include <linux/bitops.h> +#include <linux/io.h> +#include <mach/mc.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define COARSE_MIN_START 6 +#define FINE_MIN_START 15 +#define COARSE_MAX_START 7 +#define FINE_MAX_START 0 + +#define NUM_OF_CACHELINE 128 +#define TEST_PAT_SIZE (NUM_OF_CACHELINE * CONFIG_SYS_CACHELINE_SIZE) + +#define INIT_DQS_VAL ((7 << DQS1_DELAY_COARSE_TUNING_S) | \ + (4 << DQS1_DELAY_FINE_TUNING_S) | \ + (7 << DQS0_DELAY_COARSE_TUNING_S) | \ + (4 << DQS0_DELAY_FINE_TUNING_S)) + +static inline void pref_op(int op, const volatile void *addr) +{ + __asm__ __volatile__("pref %0, 0(%1)" : : "i" (op), "r" (addr)); +} + +static inline bool dqs_test_error(void __iomem *memc, u32 memsize, u32 dqsval, + u32 bias) +{ + u32 *nca, *ca; + u32 off; + int i; + + for (off = 0; off < memsize - TEST_PAT_SIZE; off += (memsize >> 6)) { + nca = (u32 *)KSEG1ADDR(off); + ca = (u32 *)KSEG0ADDR(off); + + writel(INIT_DQS_VAL, memc + MEMCTL_DDR_DQS_DLY_REG); + wmb(); + + for (i = 0; i < TEST_PAT_SIZE / sizeof(u32); i++) + ca[i] = 0x1f1f1f1f; + + for (i = 0; i < TEST_PAT_SIZE / sizeof(u32); i++) + nca[i] = (u32)nca + i + bias; + + writel(dqsval, memc + MEMCTL_DDR_DQS_DLY_REG); + wmb(); + + for (i = 0; i < TEST_PAT_SIZE; i += CONFIG_SYS_CACHELINE_SIZE) + mips_cache(HIT_INVALIDATE_D, (u8 *)ca + i); + wmb(); + + for (i = 0; i < TEST_PAT_SIZE; i += CONFIG_SYS_CACHELINE_SIZE) + pref_op(0, (u8 *)ca + i); + + for (i = 0; i < TEST_PAT_SIZE / sizeof(u32); i++) { + if (ca[i] != (u32)nca + i + bias) + return true; + } + } + + return false; +} + +static inline int dqs_find_max(void __iomem *memc, u32 memsize, int initval, + int maxval, int shift, u32 regval) +{ + int fieldval; + u32 dqsval; + + for (fieldval = initval; fieldval <= maxval; fieldval++) { + dqsval = regval | (fieldval << shift); + if (dqs_test_error(memc, memsize, dqsval, 3)) + return max(fieldval - 1, initval); + } + + return maxval; +} + +static inline int dqs_find_min(void __iomem *memc, u32 memsize, int initval, + int minval, int shift, u32 regval) +{ + int fieldval; + u32 dqsval; + + for (fieldval = initval; fieldval >= minval; fieldval--) { + dqsval = regval | (fieldval << shift); + if (dqs_test_error(memc, memsize, dqsval, 1)) + return min(fieldval + 1, initval); + } + + return minval; +} + +void ddr_calibrate(void __iomem *memc, u32 memsize, u32 bw) +{ + u32 dqs_coarse_min, dqs_coarse_max, dqs_coarse_val; + u32 dqs_fine_min, dqs_fine_max, dqs_fine_val; + u32 dqs_coarse_min_limit, dqs_fine_min_limit; + u32 dlls, dqs_dll, ddr_cfg2_reg; + u32 dqs_dly_tmp, dqs_dly, test_dqs, shift; + u32 rem, mask; + int i; + + /* Disable Self-refresh */ + clrbits_32(memc + MEMCTL_DDR_SELF_REFRESH_REG, SR_AUTO_EN); + + /* Save DDR_CFG2 and modify its DQS gating window */ + ddr_cfg2_reg = readl(memc + MEMCTL_DDR_CFG2_REG); + mask = DQS0_GATING_WINDOW_M; + if (bw == IND_SDRAM_WIDTH_16BIT) + mask |= DQS1_GATING_WINDOW_M; + clrbits_32(memc + MEMCTL_DDR_CFG2_REG, mask); + + /* Get minimum available DQS value */ + dlls = readl(memc + MEMCTL_DLL_DBG_REG); + dlls = (dlls & MST_DLY_SEL_M) >> MST_DLY_SEL_S; + + dqs_dll = dlls >> 4; + if (dqs_dll <= 8) + dqs_coarse_min_limit = 8 - dqs_dll; + else + dqs_coarse_min_limit = 0; + + dqs_dll = dlls & 0xf; + if (dqs_dll <= 8) + dqs_fine_min_limit = 8 - dqs_dll; + else + dqs_fine_min_limit = 0; + + /* Initial DQS register value */ + dqs_dly = INIT_DQS_VAL; + + /* Calibrate DQS0 and/or DQS1 */ + for (i = 0; i < bw; i++) { + shift = i * 8; + dqs_dly &= ~(0xff << shift); + + /* Find maximum DQS coarse-grain */ + dqs_dly_tmp = dqs_dly | (0xf << shift); + dqs_coarse_max = dqs_find_max(memc, memsize, COARSE_MAX_START, + 0xf, 4 + shift, dqs_dly_tmp); + + /* Find maximum DQS fine-grain */ + dqs_dly_tmp = dqs_dly | (dqs_coarse_max << (4 + shift)); + test_dqs = dqs_find_max(memc, memsize, FINE_MAX_START, 0xf, + shift, dqs_dly_tmp); + + if (test_dqs == FINE_MAX_START) { + dqs_coarse_max--; + dqs_fine_max = 0xf; + } else { + dqs_fine_max = test_dqs - 1; + } + + /* Find minimum DQS coarse-grain */ + dqs_dly_tmp = dqs_dly; + dqs_coarse_min = dqs_find_min(memc, memsize, COARSE_MIN_START, + dqs_coarse_min_limit, 4 + shift, + dqs_dly_tmp); + + /* Find minimum DQS fine-grain */ + dqs_dly_tmp = dqs_dly | (dqs_coarse_min << (4 + shift)); + test_dqs = dqs_find_min(memc, memsize, FINE_MIN_START, + dqs_fine_min_limit, shift, dqs_dly_tmp); + + if (test_dqs == FINE_MIN_START + 1) { + dqs_coarse_min++; + dqs_fine_min = 0; + } else { + dqs_fine_min = test_dqs; + } + + /* Calculate central DQS coarse/fine value */ + dqs_coarse_val = (dqs_coarse_max + dqs_coarse_min) >> 1; + rem = (dqs_coarse_max + dqs_coarse_min) % 2; + + dqs_fine_val = (rem * 4) + ((dqs_fine_max + dqs_fine_min) >> 1); + if (dqs_fine_val >= 0x10) { + dqs_coarse_val++; + dqs_fine_val -= 8; + } + + /* Save current DQS value */ + dqs_dly |= ((dqs_coarse_val << 4) | dqs_fine_val) << shift; + } + + /* Set final DQS value */ + writel(dqs_dly, memc + MEMCTL_DDR_DQS_DLY_REG); + + /* Restore DDR_CFG2 */ + writel(ddr_cfg2_reg, memc + MEMCTL_DDR_CFG2_REG); + + /* Enable Self-refresh */ + setbits_32(memc + MEMCTL_DDR_SELF_REFRESH_REG, SR_AUTO_EN); +} diff --git a/arch/mips/mach-mtmips/ddr_calibrate.c b/arch/mips/mach-mtmips/ddr_calibrate.c deleted file mode 100644 index 3cd4408..0000000 --- a/arch/mips/mach-mtmips/ddr_calibrate.c +++ /dev/null @@ -1,309 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright (C) 2018 Stefan Roese <sr@denx.de> - * - * This code is mostly based on the code extracted from this MediaTek - * github repository: - * - * https://github.com/MediaTek-Labs/linkit-smart-uboot.git - * - * I was not able to find a specific license or other developers - * copyrights here, so I can't add them here. - * - * Most functions in this file are copied from the MediaTek U-Boot - * repository. Without any documentation, it was impossible to really - * implement this differently. So its mostly a cleaned-up version of - * the original code, with only support for the MT7628 / MT7688 SoC. - */ - -#include <common.h> -#include <cpu_func.h> -#include <linux/io.h> -#include <asm/cacheops.h> -#include <asm/io.h> -#include "mt76xx.h" - -#define NUM_OF_CACHELINE 128 -#define MIN_START 6 -#define MIN_FINE_START 0xf -#define MAX_START 7 -#define MAX_FINE_START 0x0 - -#define CPU_FRAC_DIV 1 - -#if defined(CONFIG_ONBOARD_DDR2_SIZE_256MBIT) -#define DRAM_BUTTOM 0x02000000 -#endif -#if defined(CONFIG_ONBOARD_DDR2_SIZE_512MBIT) -#define DRAM_BUTTOM 0x04000000 -#endif -#if defined(CONFIG_ONBOARD_DDR2_SIZE_1024MBIT) -#define DRAM_BUTTOM 0x08000000 -#endif -#if defined(CONFIG_ONBOARD_DDR2_SIZE_2048MBIT) -#define DRAM_BUTTOM 0x10000000 -#endif - -static inline void cal_memcpy(void *src, void *dst, u32 size) -{ - u8 *psrc = (u8 *)src; - u8 *pdst = (u8 *)dst; - int i; - - for (i = 0; i < size; i++, psrc++, pdst++) - *pdst = *psrc; -} - -static inline void cal_memset(void *src, u8 pat, u32 size) -{ - u8 *psrc = (u8 *)src; - int i; - - for (i = 0; i < size; i++, psrc++) - *psrc = pat; -} - -#define pref_op(hint, addr) \ - __asm__ __volatile__( \ - ".set push\n" \ - ".set noreorder\n" \ - "pref %0, %1\n" \ - ".set pop\n" \ - : \ - : "i" (hint), "R" (*(u8 *)(addr))) - -static inline void cal_patgen(u32 start_addr, u32 size, u32 bias) -{ - u32 *addr = (u32 *)start_addr; - int i; - - for (i = 0; i < size; i++) - addr[i] = start_addr + i + bias; -} - -static inline int test_loop(int k, int dqs, u32 test_dqs, u32 *coarse_dqs, - u32 offs, u32 pat, u32 val) -{ - u32 nc_addr; - u32 *c_addr; - int i; - - for (nc_addr = 0xa0000000; - nc_addr < (0xa0000000 + DRAM_BUTTOM - NUM_OF_CACHELINE * 32); - nc_addr += (DRAM_BUTTOM >> 6) + offs) { - writel(0x00007474, (void *)MT76XX_MEMCTRL_BASE + 0x64); - wmb(); /* Make sure store if finished */ - - c_addr = (u32 *)(nc_addr & 0xdfffffff); - cal_memset(((u8 *)c_addr), 0x1F, NUM_OF_CACHELINE * 32); - cal_patgen(nc_addr, NUM_OF_CACHELINE * 8, pat); - - if (dqs > 0) - writel(0x00000074 | - (((k == 1) ? coarse_dqs[dqs] : test_dqs) << 12) | - (((k == 0) ? val : test_dqs) << 8), - (void *)MT76XX_MEMCTRL_BASE + 0x64); - else - writel(0x00007400 | - (((k == 1) ? coarse_dqs[dqs] : test_dqs) << 4) | - (((k == 0) ? val : test_dqs) << 0), - (void *)MT76XX_MEMCTRL_BASE + 0x64); - wmb(); /* Make sure store if finished */ - - invalidate_dcache_range((u32)c_addr, - (u32)c_addr + - NUM_OF_CACHELINE * 32); - wmb(); /* Make sure store if finished */ - - for (i = 0; i < NUM_OF_CACHELINE * 8; i++) { - if (i % 8 == 0) - pref_op(0, &c_addr[i]); - } - - for (i = 0; i < NUM_OF_CACHELINE * 8; i++) { - if (c_addr[i] != nc_addr + i + pat) - return -1; - } - } - - return 0; -} - -void ddr_calibrate(void) -{ - u32 min_coarse_dqs[2]; - u32 max_coarse_dqs[2]; - u32 min_fine_dqs[2]; - u32 max_fine_dqs[2]; - u32 coarse_dqs[2]; - u32 fine_dqs[2]; - int reg = 0, ddr_cfg2_reg; - int flag; - int i, k; - int dqs = 0; - u32 min_coarse_dqs_bnd, min_fine_dqs_bnd, coarse_dqs_dll, fine_dqs_dll; - u32 val; - u32 fdiv = 0, frac = 0; - - /* Setup clock to run at full speed */ - val = readl((void *)MT76XX_DYN_CFG0_REG); - fdiv = (u32)((val >> 8) & 0x0F); - if (CPU_FRAC_DIV < 1 || CPU_FRAC_DIV > 10) - frac = val & 0x0f; - else - frac = CPU_FRAC_DIV; - - while (frac < fdiv) { - val = readl((void *)MT76XX_DYN_CFG0_REG); - fdiv = (val >> 8) & 0x0f; - fdiv--; - val &= ~(0x0f << 8); - val |= (fdiv << 8); - writel(val, (void *)MT76XX_DYN_CFG0_REG); - udelay(500); - val = readl((void *)MT76XX_DYN_CFG0_REG); - fdiv = (val >> 8) & 0x0f; - } - - clrbits_le32((void *)MT76XX_MEMCTRL_BASE + 0x10, BIT(4)); - ddr_cfg2_reg = readl((void *)MT76XX_MEMCTRL_BASE + 0x48); - clrbits_le32((void *)MT76XX_MEMCTRL_BASE + 0x48, - (0x3 << 28) | (0x3 << 26)); - - min_coarse_dqs[0] = MIN_START; - min_coarse_dqs[1] = MIN_START; - min_fine_dqs[0] = MIN_FINE_START; - min_fine_dqs[1] = MIN_FINE_START; - max_coarse_dqs[0] = MAX_START; - max_coarse_dqs[1] = MAX_START; - max_fine_dqs[0] = MAX_FINE_START; - max_fine_dqs[1] = MAX_FINE_START; - dqs = 0; - - /* Add by KP, DQS MIN boundary */ - reg = readl((void *)MT76XX_MEMCTRL_BASE + 0x20); - coarse_dqs_dll = (reg & 0xf00) >> 8; - fine_dqs_dll = (reg & 0xf0) >> 4; - if (coarse_dqs_dll <= 8) - min_coarse_dqs_bnd = 8 - coarse_dqs_dll; - else - min_coarse_dqs_bnd = 0; - - if (fine_dqs_dll <= 8) - min_fine_dqs_bnd = 8 - fine_dqs_dll; - else - min_fine_dqs_bnd = 0; - /* DQS MIN boundary */ - -DQS_CAL: - - for (k = 0; k < 2; k++) { - u32 test_dqs; - - if (k == 0) - test_dqs = MAX_START; - else - test_dqs = MAX_FINE_START; - - do { - flag = test_loop(k, dqs, test_dqs, max_coarse_dqs, - 0x400, 0x3, 0xf); - if (flag == -1) - break; - - test_dqs++; - } while (test_dqs <= 0xf); - - if (k == 0) { - max_coarse_dqs[dqs] = test_dqs; - } else { - test_dqs--; - - if (test_dqs == MAX_FINE_START - 1) { - max_coarse_dqs[dqs]--; - max_fine_dqs[dqs] = 0xf; - } else { - max_fine_dqs[dqs] = test_dqs; - } - } - } - - for (k = 0; k < 2; k++) { - u32 test_dqs; - - if (k == 0) - test_dqs = MIN_START; - else - test_dqs = MIN_FINE_START; - - do { - flag = test_loop(k, dqs, test_dqs, min_coarse_dqs, - 0x480, 0x1, 0x0); - if (k == 0) { - if (flag == -1 || - test_dqs == min_coarse_dqs_bnd) - break; - - test_dqs--; - - if (test_dqs < min_coarse_dqs_bnd) - break; - } else { - if (flag == -1) { - test_dqs++; - break; - } else if (test_dqs == min_fine_dqs_bnd) { - break; - } - - test_dqs--; - - if (test_dqs < min_fine_dqs_bnd) - break; - } - } while (test_dqs >= 0); - - if (k == 0) { - min_coarse_dqs[dqs] = test_dqs; - } else { - if (test_dqs == MIN_FINE_START + 1) { - min_coarse_dqs[dqs]++; - min_fine_dqs[dqs] = 0x0; - } else { - min_fine_dqs[dqs] = test_dqs; - } - } - } - - if (dqs == 0) { - dqs = 1; - goto DQS_CAL; - } - - for (i = 0; i < 2; i++) { - u32 temp; - - coarse_dqs[i] = (max_coarse_dqs[i] + min_coarse_dqs[i]) >> 1; - temp = - (((max_coarse_dqs[i] + min_coarse_dqs[i]) % 2) * 4) + - ((max_fine_dqs[i] + min_fine_dqs[i]) >> 1); - if (temp >= 0x10) { - coarse_dqs[i]++; - fine_dqs[i] = (temp - 0x10) + 0x8; - } else { - fine_dqs[i] = temp; - } - } - reg = (coarse_dqs[1] << 12) | (fine_dqs[1] << 8) | - (coarse_dqs[0] << 4) | fine_dqs[0]; - - clrbits_le32((void *)MT76XX_MEMCTRL_BASE + 0x10, BIT(4)); - writel(reg, (void *)MT76XX_MEMCTRL_BASE + 0x64); - writel(ddr_cfg2_reg, (void *)MT76XX_MEMCTRL_BASE + 0x48); - setbits_le32((void *)MT76XX_MEMCTRL_BASE + 0x10, BIT(4)); - - for (i = 0; i < 2; i++) - debug("[%02X%02X%02X%02X]", min_coarse_dqs[i], - min_fine_dqs[i], max_coarse_dqs[i], max_fine_dqs[i]); - debug("\nDDR Calibration DQS reg = %08X\n", reg); -} diff --git a/arch/mips/mach-mtmips/ddr_init.c b/arch/mips/mach-mtmips/ddr_init.c new file mode 100644 index 0000000..cd355cc --- /dev/null +++ b/arch/mips/mach-mtmips/ddr_init.c @@ -0,0 +1,194 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +#include <common.h> +#include <linux/bitops.h> +#include <linux/io.h> +#include <linux/sizes.h> +#include <mach/ddr.h> +#include <mach/mc.h> + +#define DDR_BW_TEST_PAT 0xaa5555aa + +static const u32 dram_size[] = { + [DRAM_8MB] = SZ_8M, + [DRAM_16MB] = SZ_16M, + [DRAM_32MB] = SZ_32M, + [DRAM_64MB] = SZ_64M, + [DRAM_128MB] = SZ_128M, + [DRAM_256MB] = SZ_256M, +}; + +static void dram_test_write(u32 addr, u32 val) +{ + volatile ulong *target = (volatile ulong *)(KSEG1 + addr); + + sync(); + *target = val; + sync(); +} + +static u32 dram_test_read(u32 addr) +{ + volatile ulong *target = (volatile ulong *)(KSEG1 + addr); + u32 val; + + sync(); + val = *target; + sync(); + + return val; +} + +static int dram_addr_test_bit(u32 bit) +{ + u32 val; + + dram_test_write(0, 0); + dram_test_write(BIT(bit), DDR_BW_TEST_PAT); + val = dram_test_read(0); + + if (val == DDR_BW_TEST_PAT) + return 1; + + return 0; +} + +static void mc_ddr_init(void __iomem *memc, const struct mc_ddr_cfg *cfg, + u32 dq_dly, u32 dqs_dly, mc_reset_t mc_reset, u32 bw) +{ + u32 val; + + mc_reset(1); + __udelay(200); + mc_reset(0); + + clrbits_32(memc + MEMCTL_SDRAM_CFG1_REG, RBC_MAPPING); + + writel(cfg->cfg2, memc + MEMCTL_DDR_CFG2_REG); + writel(cfg->cfg3, memc + MEMCTL_DDR_CFG3_REG); + writel(cfg->cfg4, memc + MEMCTL_DDR_CFG4_REG); + writel(dq_dly, memc + MEMCTL_DDR_DQ_DLY_REG); + writel(dqs_dly, memc + MEMCTL_DDR_DQS_DLY_REG); + + writel(cfg->cfg0, memc + MEMCTL_DDR_CFG0_REG); + + val = cfg->cfg1; + if (bw) { + val &= ~IND_SDRAM_WIDTH_M; + val |= (bw << IND_SDRAM_WIDTH_S) & IND_SDRAM_WIDTH_M; + } + + writel(val, memc + MEMCTL_DDR_CFG1_REG); + + clrsetbits_32(memc + MEMCTL_PWR_SAVE_CNT_REG, SR_TAR_CNT_M, + 1 << SR_TAR_CNT_S); + + setbits_32(memc + MEMCTL_DDR_SELF_REFRESH_REG, SR_AUTO_EN); +} + +void ddr1_init(struct mc_ddr_init_param *param) +{ + enum mc_dram_size sz; + u32 bw = 0; + + /* First initialization, determine bus width */ + mc_ddr_init(param->memc, ¶m->cfgs[DRAM_8MB], param->dq_dly, + param->dqs_dly, param->mc_reset, IND_SDRAM_WIDTH_16BIT); + + /* Test bus width */ + dram_test_write(0, DDR_BW_TEST_PAT); + if (dram_test_read(0) == DDR_BW_TEST_PAT) + bw = IND_SDRAM_WIDTH_16BIT; + else + bw = IND_SDRAM_WIDTH_8BIT; + + /* Second initialization, determine DDR capacity */ + mc_ddr_init(param->memc, ¶m->cfgs[DRAM_128MB], param->dq_dly, + param->dqs_dly, param->mc_reset, bw); + + if (dram_addr_test_bit(9)) { + sz = DRAM_8MB; + } else { + if (dram_addr_test_bit(10)) { + if (dram_addr_test_bit(23)) + sz = DRAM_16MB; + else + sz = DRAM_32MB; + } else { + if (dram_addr_test_bit(24)) + sz = DRAM_64MB; + else + sz = DRAM_128MB; + } + } + + /* Final initialization, with DDR calibration */ + mc_ddr_init(param->memc, ¶m->cfgs[sz], param->dq_dly, + param->dqs_dly, param->mc_reset, bw); + + /* Return actual DDR configuration */ + param->memsize = dram_size[sz]; + param->bus_width = bw; +} + +void ddr2_init(struct mc_ddr_init_param *param) +{ + enum mc_dram_size sz; + u32 bw = 0; + + /* First initialization, determine bus width */ + mc_ddr_init(param->memc, ¶m->cfgs[DRAM_32MB], param->dq_dly, + param->dqs_dly, param->mc_reset, IND_SDRAM_WIDTH_16BIT); + + /* Test bus width */ + dram_test_write(0, DDR_BW_TEST_PAT); + if (dram_test_read(0) == DDR_BW_TEST_PAT) + bw = IND_SDRAM_WIDTH_16BIT; + else + bw = IND_SDRAM_WIDTH_8BIT; + + /* Second initialization, determine DDR capacity */ + mc_ddr_init(param->memc, ¶m->cfgs[DRAM_256MB], param->dq_dly, + param->dqs_dly, param->mc_reset, bw); + + if (bw == IND_SDRAM_WIDTH_16BIT) { + if (dram_addr_test_bit(10)) { + sz = DRAM_32MB; + } else { + if (dram_addr_test_bit(24)) { + if (dram_addr_test_bit(27)) + sz = DRAM_64MB; + else + sz = DRAM_128MB; + } else { + sz = DRAM_256MB; + } + } + } else { + if (dram_addr_test_bit(23)) { + sz = DRAM_32MB; + } else { + if (dram_addr_test_bit(24)) { + if (dram_addr_test_bit(27)) + sz = DRAM_64MB; + else + sz = DRAM_128MB; + } else { + sz = DRAM_256MB; + } + } + } + + /* Final initialization, with DDR calibration */ + mc_ddr_init(param->memc, ¶m->cfgs[sz], param->dq_dly, + param->dqs_dly, param->mc_reset, bw); + + /* Return actual DDR configuration */ + param->memsize = dram_size[sz]; + param->bus_width = bw; +} diff --git a/arch/mips/mach-mtmips/include/mach/ddr.h b/arch/mips/mach-mtmips/include/mach/ddr.h new file mode 100644 index 0000000..f921981 --- /dev/null +++ b/arch/mips/mach-mtmips/include/mach/ddr.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +#ifndef _MTMIPS_DDR_H_ +#define _MTMIPS_DDR_H_ + +#include <linux/io.h> +#include <linux/types.h> + +enum mc_dram_size { + DRAM_8MB, + DRAM_16MB, + DRAM_32MB, + DRAM_64MB, + DRAM_128MB, + DRAM_256MB, + + __DRAM_SZ_MAX +}; + +struct mc_ddr_cfg { + u32 cfg0; + u32 cfg1; + u32 cfg2; + u32 cfg3; + u32 cfg4; +}; + +typedef void (*mc_reset_t)(int assert); + +struct mc_ddr_init_param { + void __iomem *memc; + + u32 dq_dly; + u32 dqs_dly; + + const struct mc_ddr_cfg *cfgs; + mc_reset_t mc_reset; + + u32 memsize; + u32 bus_width; +}; + +void ddr1_init(struct mc_ddr_init_param *param); +void ddr2_init(struct mc_ddr_init_param *param); +void ddr_calibrate(void __iomem *memc, u32 memsize, u32 bw); + +#endif /* _MTMIPS_DDR_H_ */ diff --git a/arch/mips/mach-mtmips/include/mach/mc.h b/arch/mips/mach-mtmips/include/mach/mc.h new file mode 100644 index 0000000..d7d623a --- /dev/null +++ b/arch/mips/mach-mtmips/include/mach/mc.h @@ -0,0 +1,180 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +#ifndef _MTMIPS_MC_H_ +#define _MTMIPS_MC_H_ + +#define MEMCTL_SDRAM_CFG0_REG 0x00 +#define DIS_CLK_GT 0x80000000 +#define CLK_SLEW_S 29 +#define CLK_SLEW_M 0x60000000 +#define TWR 0x10000000 +#define TMRD_S 24 +#define TMRD_M 0xf000000 +#define TRFC_S 20 +#define TRFC_M 0xf00000 +#define TCAS_S 16 +#define TCAS_M 0x30000 +#define TRAS_S 12 +#define TRAS_M 0xf000 +#define TRCD_S 8 +#define TRCD_M 0x300 +#define TRC_S 4 +#define TRC_M 0xf0 +#define TRP_S 0 +#define TRP_M 0x03 + +#define MEMCTL_SDRAM_CFG1_REG 0x04 +#define SDRAM_INIT_START 0x80000000 +#define SDRAM_INIT_DONE 0x40000000 +#define RBC_MAPPING 0x20000000 +#define PWR_DOWN_EN 0x10000000 +#define PWR_DOWN_MODE 0x8000000 +#define SDRAM_WIDTH 0x1000000 +#define NUMCOLS_S 20 +#define NUMCOLS_M 0x300000 +#define NUMROWS_S 16 +#define NUMROWS_M 0x30000 +#define TREFR_S 0 +#define TREFR_M 0xffff + +#define MEMCTL_DDR_SELF_REFRESH_REG 0x10 +#define ODT_SRC_SEL_S 24 +#define ODT_SRC_SEL_M 0xf000000 +#define ODT_OFF_DLY_S 20 +#define ODT_OFF_DLY_M 0xf00000 +#define ODT_ON_DLY_S 16 +#define ODT_ON_DLY_M 0xf0000 +#define SR_AUTO_EN 0x10 +#define SRACK_B 0x02 +#define SRREQ_B 0x01 + +#define MEMCTL_PWR_SAVE_CNT_REG 0x14 +#define PD_CNT_S 24 +#define PD_CNT_M 0xff000000 +#define SR_TAR_CNT_S 0 +#define SR_TAR_CNT_M 0xffffff + +#define MEMCTL_DLL_DBG_REG 0x20 +#define TDC_STABLE_S 12 +#define TDC_STABLE_M 0x3f000 +#define MST_DLY_SEL_S 4 +#define MST_DLY_SEL_M 0xff0 +#define CURR_STATE_S 1 +#define CURR_STATE_M 0x06 +#define ADLL_LOCK_DONE 0x01 + +#define MEMCTL_DDR_CFG0_REG 0x40 +#define T_RRD_S 28 +#define T_RRD_M 0xf0000000 +#define T_RAS_S 23 +#define T_RAS_M 0xf800000 +#define T_RP_S 19 +#define T_RP_M 0x780000 +#define T_RFC_S 13 +#define T_RFC_M 0x7e000 +#define T_REFI_S 0 +#define T_REFI_M 0x1fff + +#define MEMCTL_DDR_CFG1_REG 0x44 +#define T_WTR_S 28 +#define T_WTR_M 0xf0000000 +#define T_RTP_S 24 +#define T_RTP_M 0xf000000 +#define USER_DATA_WIDTH 0x200000 +#define IND_SDRAM_SIZE_S 18 +#define IND_SDRAM_SIZE_M 0x1c0000 +#define IND_SDRAM_SIZE_8MB 1 +#define IND_SDRAM_SIZE_16MB 2 +#define IND_SDRAM_SIZE_32MB 3 +#define IND_SDRAM_SIZE_64MB 4 +#define IND_SDRAM_SIZE_128MB 5 +#define IND_SDRAM_SIZE_256MB 6 +#define IND_SDRAM_WIDTH_S 16 +#define IND_SDRAM_WIDTH_M 0x30000 +#define IND_SDRAM_WIDTH_8BIT 1 +#define IND_SDRAM_WIDTH_16BIT 2 +#define EXT_BANK_S 14 +#define EXT_BANK_M 0xc000 +#define TOTAL_SDRAM_WIDTH_S 12 +#define TOTAL_SDRAM_WIDTH_M 0x3000 +#define T_WR_S 8 +#define T_WR_M 0xf00 +#define T_MRD_S 4 +#define T_MRD_M 0xf0 +#define T_RCD_S 0 +#define T_RCD_M 0x0f + +#define MEMCTL_DDR_CFG2_REG 0x48 +#define REGE 0x80000000 +#define DDR2_MODE 0x40000000 +#define DQS0_GATING_WINDOW_S 28 +#define DQS0_GATING_WINDOW_M 0x30000000 +#define DQS1_GATING_WINDOW_S 26 +#define DQS1_GATING_WINDOW_M 0xc000000 +#define PD 0x1000 +#define WR_S 9 +#define WR_M 0xe00 +#define DLLRESET 0x100 +#define TESTMODE 0x80 +#define CAS_LATENCY_S 4 +#define CAS_LATENCY_M 0x70 +#define BURST_TYPE 0x08 +#define BURST_LENGTH_S 0 +#define BURST_LENGTH_M 0x07 + +#define MEMCTL_DDR_CFG3_REG 0x4c +#define Q_OFF 0x1000 +#define RDOS 0x800 +#define DIS_DIFF_DQS 0x400 +#define OCD_S 7 +#define OCD_M 0x380 +#define RTT1 0x40 +#define ADDITIVE_LATENCY_S 3 +#define ADDITIVE_LATENCY_M 0x38 +#define RTT0 0x04 +#define DS 0x02 +#define DLL 0x01 + +#define MEMCTL_DDR_CFG4_REG 0x50 +#define FAW_S 0 +#define FAW_M 0x0f + +#define MEMCTL_DDR_DQ_DLY_REG 0x60 +#define DQ1_DELAY_SEL_S 24 +#define DQ1_DELAY_SEL_M 0xff000000 +#define DQ0_DELAY_SEL_S 16 +#define DQ0_DELAY_SEL_M 0xff0000 +#define DQ1_DELAY_COARSE_TUNING_S 12 +#define DQ1_DELAY_COARSE_TUNING_M 0xf000 +#define DQ1_DELAY_FINE_TUNING_S 8 +#define DQ1_DELAY_FINE_TUNING_M 0xf00 +#define DQ0_DELAY_COARSE_TUNING_S 4 +#define DQ0_DELAY_COARSE_TUNING_M 0xf0 +#define DQ0_DELAY_FINE_TUNING_S 0 +#define DQ0_DELAY_FINE_TUNING_M 0x0f + +#define MEMCTL_DDR_DQS_DLY_REG 0x64 +#define DQS1_DELAY_SEL_S 24 +#define DQS1_DELAY_SEL_M 0xff000000 +#define DQS0_DELAY_SEL_S 16 +#define DQS0_DELAY_SEL_M 0xff0000 +#define DQS1_DELAY_COARSE_TUNING_S 12 +#define DQS1_DELAY_COARSE_TUNING_M 0xf000 +#define DQS1_DELAY_FINE_TUNING_S 8 +#define DQS1_DELAY_FINE_TUNING_M 0xf00 +#define DQS0_DELAY_COARSE_TUNING_S 4 +#define DQS0_DELAY_COARSE_TUNING_M 0xf0 +#define DQS0_DELAY_FINE_TUNING_S 0 +#define DQS0_DELAY_FINE_TUNING_M 0x0f + +#define MEMCTL_DDR_DLL_SLV_REG 0x68 +#define DLL_SLV_UPDATE_MODE 0x100 +#define DQS_DLY_SEL_EN 0x80 +#define DQ_DLY_SEL_EN 0x01 + +#endif /* _MTMIPS_MC_H_ */ diff --git a/arch/mips/mach-mtmips/include/mach/serial.h b/arch/mips/mach-mtmips/include/mach/serial.h new file mode 100644 index 0000000..bfa246b --- /dev/null +++ b/arch/mips/mach-mtmips/include/mach/serial.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +#ifndef _MTMIPS_SERIAL_H_ +#define _MTMIPS_SERIAL_H_ + +void mtmips_spl_serial_init(void); + +#endif /* _MTMIPS_SERIAL_H_ */ diff --git a/arch/mips/mach-mtmips/lowlevel_init.S b/arch/mips/mach-mtmips/lowlevel_init.S deleted file mode 100644 index aa707e0..0000000 --- a/arch/mips/mach-mtmips/lowlevel_init.S +++ /dev/null @@ -1,328 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ -/* - * (c) 2018 Stefan Roese <sr@denx.de> - * - * This code is mostly based on the code extracted from this MediaTek - * github repository: - * - * https://github.com/MediaTek-Labs/linkit-smart-uboot.git - * - * I was not able to find a specific license or other developers - * copyrights here, so I can't add them here. - */ - -#include <config.h> -#include <asm/regdef.h> -#include <asm/mipsregs.h> -#include <asm/addrspace.h> -#include <asm/asm.h> -#include "mt76xx.h" - -#ifndef BIT -#define BIT(nr) (1 << (nr)) -#endif - -#define DELAY_USEC(us) ((us) / 100) - -#define DDR_CFG1_CHIP_WIDTH_MASK (0x3 << 16) -#define DDR_CFG1_BUS_WIDTH_MASK (0x3 << 12) - -#if defined(CONFIG_ONBOARD_DDR2_SIZE_256MBIT) -#define DDR_CFG1_SIZE_VAL 0x222e2323 -#define DDR_CFG4_SIZE_VAL 7 -#endif -#if defined(CONFIG_ONBOARD_DDR2_SIZE_512MBIT) -#define DDR_CFG1_SIZE_VAL 0x22322323 -#define DDR_CFG4_SIZE_VAL 9 -#endif -#if defined(CONFIG_ONBOARD_DDR2_SIZE_1024MBIT) -#define DDR_CFG1_SIZE_VAL 0x22362323 -#define DDR_CFG4_SIZE_VAL 9 -#endif -#if defined(CONFIG_ONBOARD_DDR2_SIZE_2048MBIT) -#define DDR_CFG1_SIZE_VAL 0x223a2323 -#define DDR_CFG4_SIZE_VAL 9 -#endif - -#if defined(CONFIG_ONBOARD_DDR2_CHIP_WIDTH_8BIT) -#define DDR_CFG1_CHIP_WIDTH_VAL (0x1 << 16) -#endif -#if defined(CONFIG_ONBOARD_DDR2_CHIP_WIDTH_16BIT) -#define DDR_CFG1_CHIP_WIDTH_VAL (0x2 << 16) -#endif - -#if defined(CONFIG_ONBOARD_DDR2_BUS_WIDTH_16BIT) -#define DDR_CFG1_BUS_WIDTH_VAL (0x2 << 12) -#endif -#if defined(CONFIG_ONBOARD_DDR2_BUS_WIDTH_32BIT) -#define DDR_CFG1_BUS_WIDTH_VAL (0x3 << 12) -#endif - - .set noreorder - -LEAF(lowlevel_init) - - /* Load base addresses as physical addresses for later usage */ - li s0, CKSEG1ADDR(MT76XX_SYSCTL_BASE) - li s1, CKSEG1ADDR(MT76XX_MEMCTRL_BASE) - li s2, CKSEG1ADDR(MT76XX_RGCTRL_BASE) - - /* polling CPLL is ready */ - li t1, DELAY_USEC(1000000) - la t5, MT76XX_ROM_STATUS_REG -1: - lw t2, 0(t5) - andi t2, t2, 0x1 - bnez t2, CPLL_READY - subu t1, t1, 1 - bgtz t1, 1b - nop - la t0, MT76XX_CLKCFG0_REG - lw t3, 0(t0) - ori t3, t3, 0x1 - sw t3, 0(t0) - b CPLL_DONE - nop -CPLL_READY: - la t0, MT76XX_CLKCFG0_REG - lw t1, 0(t0) - li t2, ~0x0c - and t1, t1, t2 - ori t1, t1, 0xc - sw t1, 0(t0) - la t0, MT76XX_DYN_CFG0_REG - lw t3, 0(t0) - li t5, ~((0x0f << 8) | (0x0f << 0)) - and t3, t3, t5 - li t5, (10 << 8) | (1 << 0) - or t3, t3, t5 - sw t3, 0(t0) - la t0, MT76XX_CLKCFG0_REG - lw t3, 0(t0) - li t4, ~0x0F - and t3, t3, t4 - ori t3, t3, 0xc - sw t3, 0(t0) - lw t3, 0(t0) - ori t3, t3, 0x08 - sw t3, 0(t0) - -CPLL_DONE: - /* Reset MC */ - lw t2, 0x34(s0) - ori t2, BIT(10) - sw t2, 0x34(s0) - nop - - /* - * SDR and DDR initialization: delay 200us - */ - li t0, DELAY_USEC(200 + 40) - li t1, 0x1 -1: - sub t0, t0, t1 - bnez t0, 1b - nop - - /* set DRAM IO PAD for MT7628IC */ - /* DDR LDO Enable */ - lw t4, 0x100(s2) - li t2, BIT(31) - or t4, t4, t2 - sw t4, 0x100(s2) - lw t4, 0x10c(s2) - j LDO_1P8V - nop -LDO_1P8V: - li t2, ~BIT(6) - and t4, t4, t2 - sw t4, 0x10c(s2) - j DDRLDO_SOFT_START -LDO_2P5V: - /* suppose external DDR1 LDO 2.5V */ - li t2, BIT(6) - or t4, t4, t2 - sw t4, 0x10c(s2) - -DDRLDO_SOFT_START: - lw t2, 0x10c(s2) - li t3, BIT(16) - or t2, t2, t3 - sw t2, 0x10c(s2) - li t3, DELAY_USEC(250*50) -LDO_DELAY: - subu t3, t3, 1 - bnez t3, LDO_DELAY - nop - - lw t2, 0x10c(s2) - li t3, BIT(18) - or t2, t2, t3 - sw t2, 0x10c(s2) - -SET_RG_BUCK_FPWM: - lw t2, 0x104(s2) - ori t2, t2, BIT(10) - sw t2, 0x104(s2) - -DDR_PAD_CFG: - /* clean CLK PAD */ - lw t2, 0x704(s2) - li t8, 0xfffff0f0 - and t2, t2, t8 - /* clean CMD PAD */ - lw t3, 0x70c(s2) - li t8, 0xfffff0f0 - and t3, t3, t8 - /* clean DQ IPAD */ - lw t4, 0x710(s2) - li t8, 0xfffff8ff - and t4, t4, t8 - /* clean DQ OPAD */ - lw t5, 0x714(s2) - li t8, 0xfffff0f0 - and t5, t5, t8 - /* clean DQS IPAD */ - lw t6, 0x718(s2) - li t8, 0xfffff8ff - and t6, t6, t8 - /* clean DQS OPAD */ - lw t7, 0x71c(s2) - li t8, 0xfffff0f0 - and t7, t7, t8 - - lw t9, 0xc(s0) - srl t9, t9, 16 - andi t9, t9, 0x1 - bnez t9, MT7628_AN_DDR1_PAD -MT7628_KN_PAD: - li t8, 0x00000303 - or t2, t2, t8 - or t3, t3, t8 - or t5, t5, t8 - or t7, t7, t8 - li t8, 0x00000000 - or t4, t4, t8 - or t6, t6, t8 - j SET_PAD_CFG -MT7628_AN_DDR1_PAD: - lw t1, 0x10(s0) - andi t1, t1, 0x1 - beqz t1, MT7628_AN_DDR2_PAD - li t8, 0x00000c0c - or t2, t2, t8 - li t8, 0x00000202 - or t3, t3, t8 - li t8, 0x00000707 - or t5, t5, t8 - li t8, 0x00000c0c - or t7, t7, t8 - li t8, 0x00000000 - or t4, t4, t8 - or t6, t6, t8 - j SET_PAD_CFG -MT7628_AN_DDR2_PAD: - li t8, 0x00000c0c - or t2, t2, t8 - li t8, 0x00000202 - or t3, t3, t8 - li t8, 0x00000404 - or t5, t5, t8 - li t8, 0x00000c0c - or t7, t7, t8 - li t8, 0x00000000 /* ODT off */ - or t4, t4, t8 - or t6, t6, t8 - -SET_PAD_CFG: - sw t2, 0x704(s2) - sw t3, 0x70c(s2) - sw t4, 0x710(s2) - sw t5, 0x714(s2) - sw t6, 0x718(s2) - sw t7, 0x71c(s2) - - /* - * DDR initialization: reset pin to 0 - */ - lw t2, 0x34(s0) - and t2, ~BIT(10) - sw t2, 0x34(s0) - nop - - /* - * DDR initialization: wait til reg DDR_CFG1 bit 21 equal to 1 (ready) - */ -DDR_READY: - li t1, DDR_CFG1_REG - lw t0, 0(t1) - nop - and t2, t0, BIT(21) - beqz t2, DDR_READY - nop - - /* - * DDR initialization - * - * Only DDR2 supported right now. DDR2 support can be added, once - * boards using it will get added to mainline U-Boot. - */ - li t1, DDR_CFG2_REG - lw t0, 0(t1) - nop - and t0, ~BIT(30) - and t0, ~(7 << 4) - or t0, (4 << 4) - or t0, BIT(30) - or t0, BIT(11) - sw t0, 0(t1) - nop - - li t1, DDR_CFG3_REG - lw t2, 0(t1) - /* Disable ODT; reference board ok, ev board fail */ - and t2, ~BIT(6) - or t2, BIT(2) - li t0, DDR_CFG4_REG - lw t1, 0(t0) - li t2, ~(0x01f | 0x0f0) - and t1, t1, t2 - ori t1, t1, DDR_CFG4_SIZE_VAL - sw t1, 0(t0) - nop - - /* - * DDR initialization: config size and width on reg DDR_CFG1 - */ - li t6, DDR_CFG1_SIZE_VAL - - and t6, ~DDR_CFG1_CHIP_WIDTH_MASK - or t6, DDR_CFG1_CHIP_WIDTH_VAL - - /* CONFIG DDR_CFG1[13:12] about TOTAL WIDTH */ - and t6, ~DDR_CFG1_BUS_WIDTH_MASK - or t6, DDR_CFG1_BUS_WIDTH_VAL - - li t5, DDR_CFG1_REG - sw t6, 0(t5) - nop - - /* - * DDR: enable self auto refresh for power saving - * enable it by default for both RAM and ROM version (for CoC) - */ - lw t1, 0x14(s1) - nop - and t1, 0xff000000 - or t1, 0x01 - sw t1, 0x14(s1) - nop - lw t1, 0x10(s1) - nop - or t1, 0x10 - sw t1, 0x10(s1) - nop - - jr ra - nop - END(lowlevel_init) diff --git a/arch/mips/mach-mtmips/mt7628/Makefile b/arch/mips/mach-mtmips/mt7628/Makefile new file mode 100644 index 0000000..7e139d5 --- /dev/null +++ b/arch/mips/mach-mtmips/mt7628/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-y += lowlevel_init.o +obj-y += init.o +obj-y += ddr.o +obj-$(CONFIG_SPL_BUILD) += serial.o diff --git a/arch/mips/mach-mtmips/mt7628/ddr.c b/arch/mips/mach-mtmips/mt7628/ddr.c new file mode 100644 index 0000000..06c0ca6 --- /dev/null +++ b/arch/mips/mach-mtmips/mt7628/ddr.c @@ -0,0 +1,173 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +#include <common.h> +#include <asm/addrspace.h> +#include <linux/bitops.h> +#include <linux/sizes.h> +#include <linux/io.h> +#include <mach/ddr.h> +#include <mach/mc.h> +#include "mt7628.h" + +DECLARE_GLOBAL_DATA_PTR; + +/* DDR2 DQ_DLY */ +#define DDR2_DQ_DLY \ + ((0x8 << DQ1_DELAY_COARSE_TUNING_S) | \ + (0x2 << DQ1_DELAY_FINE_TUNING_S) | \ + (0x8 << DQ0_DELAY_COARSE_TUNING_S) | \ + (0x2 << DQ0_DELAY_FINE_TUNING_S)) + +/* DDR2 DQS_DLY */ +#define DDR2_DQS_DLY \ + ((0x8 << DQS1_DELAY_COARSE_TUNING_S) | \ + (0x3 << DQS1_DELAY_FINE_TUNING_S) | \ + (0x8 << DQS0_DELAY_COARSE_TUNING_S) | \ + (0x3 << DQS0_DELAY_FINE_TUNING_S)) + +const struct mc_ddr_cfg ddr1_cfgs_200mhz[] = { + [DRAM_8MB] = { 0x34A1EB94, 0x20262324, 0x28000033, 0x00000002, 0x00000000 }, + [DRAM_16MB] = { 0x34A1EB94, 0x202A2324, 0x28000033, 0x00000002, 0x00000000 }, + [DRAM_32MB] = { 0x34A1E5CA, 0x202E2324, 0x28000033, 0x00000002, 0x00000000 }, + [DRAM_64MB] = { 0x3421E5CA, 0x20322324, 0x28000033, 0x00000002, 0x00000000 }, + [DRAM_128MB] = { 0x241B05CA, 0x20362334, 0x28000033, 0x00000002, 0x00000000 }, +}; + +const struct mc_ddr_cfg ddr1_cfgs_160mhz[] = { + [DRAM_8MB] = { 0x239964A1, 0x20262323, 0x00000033, 0x00000002, 0x00000000 }, + [DRAM_16MB] = { 0x239964A1, 0x202A2323, 0x00000033, 0x00000002, 0x00000000 }, + [DRAM_32MB] = { 0x239964A1, 0x202E2323, 0x00000033, 0x00000002, 0x00000000 }, + [DRAM_64MB] = { 0x239984A1, 0x20322323, 0x00000033, 0x00000002, 0x00000000 }, + [DRAM_128MB] = { 0x239AB4A1, 0x20362333, 0x00000033, 0x00000002, 0x00000000 }, +}; + +const struct mc_ddr_cfg ddr2_cfgs_200mhz[] = { + [DRAM_32MB] = { 0x2519E2E5, 0x222E2323, 0x68000C43, 0x00000452, 0x0000000A }, + [DRAM_64MB] = { 0x249AA2E5, 0x22322323, 0x68000C43, 0x00000452, 0x0000000A }, + [DRAM_128MB] = { 0x249B42E5, 0x22362323, 0x68000C43, 0x00000452, 0x0000000A }, + [DRAM_256MB] = { 0x249CE2E5, 0x223A2323, 0x68000C43, 0x00000452, 0x0000000A }, +}; + +const struct mc_ddr_cfg ddr2_cfgs_160mhz[] = { + [DRAM_32MB] = { 0x23918250, 0x222E2322, 0x40000A43, 0x00000452, 0x00000006 }, + [DRAM_64MB] = { 0x239A2250, 0x22322322, 0x40000A43, 0x00000452, 0x00000008 }, + [DRAM_128MB] = { 0x2392A250, 0x22362322, 0x40000A43, 0x00000452, 0x00000008 }, + [DRAM_256MB] = { 0x24140250, 0x223A2322, 0x40000A43, 0x00000452, 0x00000008 }, +}; + +static void mt7628_memc_reset(int assert) +{ + void __iomem *sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + + if (assert) + setbits_32(sysc + SYSCTL_RSTCTL_REG, MC_RST); + else + clrbits_32(sysc + SYSCTL_RSTCTL_REG, MC_RST); +} + +static void mt7628_ddr_pad_ldo_config(int ddr_type, int pkg_type) +{ + void __iomem *rgc = ioremap_nocache(RGCTL_BASE, RGCTL_SIZE); + u32 ck_pad1, cmd_pad1, dq_pad0, dq_pad1, dqs_pad0, dqs_pad1; + + setbits_32(rgc + RGCTL_PMU_G0_REG, PMU_CFG_EN); + + if (ddr_type == DRAM_DDR1) + setbits_32(rgc + RGCTL_PMU_G3_REG, RG_DDRLDO_VOSEL); + else + clrbits_32(rgc + RGCTL_PMU_G3_REG, RG_DDRLDO_VOSEL); + + setbits_32(rgc + RGCTL_PMU_G3_REG, NI_DDRLDO_EN); + + __udelay(250 * 50); + + setbits_32(rgc + RGCTL_PMU_G3_REG, NI_DDRLDO_STB); + setbits_32(rgc + RGCTL_PMU_G1_REG, RG_BUCK_FPWM); + + ck_pad1 = readl(rgc + RGCTL_DDR_PAD_CK_G1_REG); + cmd_pad1 = readl(rgc + RGCTL_DDR_PAD_CMD_G1_REG); + dq_pad0 = readl(rgc + RGCTL_DDR_PAD_DQ_G0_REG); + dq_pad1 = readl(rgc + RGCTL_DDR_PAD_DQ_G1_REG); + dqs_pad0 = readl(rgc + RGCTL_DDR_PAD_DQS_G0_REG); + dqs_pad1 = readl(rgc + RGCTL_DDR_PAD_DQS_G1_REG); + + ck_pad1 &= ~(DRVP_M | DRVN_M); + cmd_pad1 &= ~(DRVP_M | DRVN_M); + dq_pad0 &= ~RTT_M; + dq_pad1 &= ~(DRVP_M | DRVN_M); + dqs_pad0 &= ~RTT_M; + dqs_pad1 &= ~(DRVP_M | DRVN_M); + + if (pkg_type == PKG_ID_KN) { + ck_pad1 |= (3 << DRVP_S) | (3 << DRVN_S); + cmd_pad1 |= (3 << DRVP_S) | (3 << DRVN_S); + dq_pad1 |= (3 << DRVP_S) | (3 << DRVN_S); + dqs_pad1 |= (3 << DRVP_S) | (3 << DRVN_S); + } else { + ck_pad1 |= (12 << DRVP_S) | (12 << DRVN_S); + cmd_pad1 |= (2 << DRVP_S) | (2 << DRVN_S); + dqs_pad1 |= (12 << DRVP_S) | (12 << DRVN_S); + if (ddr_type == DRAM_DDR1) + dq_pad1 |= (7 << DRVP_S) | (7 << DRVN_S); + else + dq_pad1 |= (4 << DRVP_S) | (4 << DRVN_S); + } + + writel(ck_pad1, rgc + RGCTL_DDR_PAD_CK_G1_REG); + writel(cmd_pad1, rgc + RGCTL_DDR_PAD_CMD_G1_REG); + writel(dq_pad0, rgc + RGCTL_DDR_PAD_DQ_G0_REG); + writel(dq_pad1, rgc + RGCTL_DDR_PAD_DQ_G1_REG); + writel(dqs_pad0, rgc + RGCTL_DDR_PAD_DQS_G0_REG); + writel(dqs_pad1, rgc + RGCTL_DDR_PAD_DQS_G1_REG); +} + +void mt7628_ddr_init(void) +{ + void __iomem *sysc; + int ddr_type, pkg_type, lspd; + struct mc_ddr_init_param param; + + sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + ddr_type = readl(sysc + SYSCTL_SYSCFG0_REG) & DRAM_TYPE; + pkg_type = !!(readl(sysc + SYSCTL_CHIP_REV_ID_REG) & PKG_ID); + lspd = readl(sysc + SYSCTL_CLKCFG0_REG) & + (CPU_PLL_FROM_BBP | CPU_PLL_FROM_XTAL); + + mt7628_memc_reset(1); + __udelay(200); + + mt7628_ddr_pad_ldo_config(ddr_type, pkg_type); + + param.memc = ioremap_nocache(MEMCTL_BASE, MEMCTL_SIZE); + param.dq_dly = DDR2_DQ_DLY; + param.dqs_dly = DDR2_DQS_DLY; + param.mc_reset = mt7628_memc_reset; + param.memsize = 0; + param.bus_width = 0; + + if (pkg_type == PKG_ID_KN) + ddr_type = DRAM_DDR1; + + if (ddr_type == DRAM_DDR1) { + if (lspd) + param.cfgs = ddr1_cfgs_160mhz; + else + param.cfgs = ddr1_cfgs_200mhz; + ddr1_init(¶m); + } else { + if (lspd) + param.cfgs = ddr2_cfgs_160mhz; + else + param.cfgs = ddr2_cfgs_200mhz; + ddr2_init(¶m); + } + + ddr_calibrate(param.memc, param.memsize, param.bus_width); + + gd->ram_size = param.memsize; +} diff --git a/arch/mips/mach-mtmips/mt7628/init.c b/arch/mips/mach-mtmips/mt7628/init.c new file mode 100644 index 0000000..77d1f2e --- /dev/null +++ b/arch/mips/mach-mtmips/mt7628/init.c @@ -0,0 +1,109 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +#include <common.h> +#include <clk.h> +#include <dm.h> +#include <dm/uclass.h> +#include <dt-bindings/clock/mt7628-clk.h> +#include <linux/io.h> +#include "mt7628.h" + +DECLARE_GLOBAL_DATA_PTR; + +static void set_init_timer_freq(void) +{ + void __iomem *sysc; + u32 bs, val, timer_freq_post; + + sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + + /* We can't use the clk driver as the DM has not been initialized yet */ + bs = readl(sysc + SYSCTL_SYSCFG0_REG); + if ((bs & XTAL_FREQ_SEL) == XTAL_25MHZ) { + gd->arch.timer_freq = 25000000; + timer_freq_post = 575000000; + } else { + gd->arch.timer_freq = 40000000; + timer_freq_post = 580000000; + } + + val = readl(sysc + SYSCTL_CLKCFG0_REG); + if (!(val & (CPU_PLL_FROM_BBP | CPU_PLL_FROM_XTAL))) + gd->arch.timer_freq = timer_freq_post; +} + +void mt7628_init(void) +{ + set_init_timer_freq(); + + mt7628_ddr_init(); +} + +int print_cpuinfo(void) +{ + void __iomem *sysc; + struct udevice *clkdev; + u32 val, ver, eco, pkg, ddr, chipmode, ee; + ulong cpu_clk, bus_clk, xtal_clk, timer_freq; + struct clk clk; + int ret; + + sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + + val = readl(sysc + SYSCTL_CHIP_REV_ID_REG); + ver = (val & VER_M) >> VER_S; + eco = (val & ECO_M) >> ECO_S; + pkg = !!(val & PKG_ID); + + val = readl(sysc + SYSCTL_SYSCFG0_REG); + ddr = val & DRAM_TYPE; + chipmode = (val & CHIP_MODE_M) >> CHIP_MODE_S; + + val = readl(sysc + SYSCTL_EFUSE_CFG_REG); + ee = val & EFUSE_MT7688; + + printf("CPU: MediaTek MT%u%c ver:%u eco:%u\n", + ee ? 7688 : 7628, pkg ? 'A' : 'K', ver, eco); + + printf("Boot: DDR%s, SPI-NOR %u-Byte Addr, CPU clock from %s\n", + ddr ? "" : "2", chipmode & 0x01 ? 4 : 3, + chipmode & 0x02 ? "XTAL" : "CPLL"); + + ret = uclass_get_device_by_driver(UCLASS_CLK, DM_GET_DRIVER(mt7628_clk), + &clkdev); + if (ret) + return ret; + + clk.dev = clkdev; + + clk.id = CLK_CPU; + cpu_clk = clk_get_rate(&clk); + + clk.id = CLK_SYS; + bus_clk = clk_get_rate(&clk); + + clk.id = CLK_XTAL; + xtal_clk = clk_get_rate(&clk); + + clk.id = CLK_MIPS_CNT; + timer_freq = clk_get_rate(&clk); + + /* Set final timer frequency */ + if (timer_freq) + gd->arch.timer_freq = timer_freq; + + printf("Clock: CPU: %luMHz, Bus: %luMHz, XTAL: %luMHz\n", + cpu_clk / 1000000, bus_clk / 1000000, xtal_clk / 1000000); + + return 0; +} + +ulong notrace get_tbclk(void) +{ + return gd->arch.timer_freq; +} diff --git a/arch/mips/mach-mtmips/mt7628/lowlevel_init.S b/arch/mips/mach-mtmips/mt7628/lowlevel_init.S new file mode 100644 index 0000000..e4a6c03 --- /dev/null +++ b/arch/mips/mach-mtmips/mt7628/lowlevel_init.S @@ -0,0 +1,161 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +#include <config.h> +#include <asm-offsets.h> +#include <asm/cacheops.h> +#include <asm/regdef.h> +#include <asm/mipsregs.h> +#include <asm/addrspace.h> +#include <asm/asm.h> +#include "mt7628.h" + +/* Set temporary stack address range */ +#ifndef CONFIG_SYS_INIT_SP_ADDR +#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \ + CONFIG_SYS_INIT_SP_OFFSET) +#endif + +#define CACHE_STACK_SIZE 0x4000 +#define CACHE_STACK_BASE (CONFIG_SYS_INIT_SP_ADDR - CACHE_STACK_SIZE) + +#define DELAY_USEC(us) ((58 * (us)) / 3) + + .set noreorder + +LEAF(mips_sram_init) +#ifndef CONFIG_SKIP_LOWLEVEL_INIT + /* Setup CPU PLL */ + li t0, DELAY_USEC(1000000) + li t1, KSEG1ADDR(SYSCTL_BASE + SYSCTL_ROM_STATUS_REG) + li t2, KSEG1ADDR(SYSCTL_BASE + SYSCTL_CLKCFG0_REG) + +_check_rom_status: + lw t3, 0(t1) + andi t3, t3, 1 + bnez t3, _rom_normal + subu t0, t0, 1 + bnez t0, _check_rom_status + nop + + lw t3, 0(t2) + ori t3, (CPU_PLL_FROM_BBP | CPU_PLL_FROM_XTAL) + xori t3, CPU_PLL_FROM_BBP + b _cpu_pll_done + nop + +_rom_normal: + lw t3, 0(t2) + ori t3, (CPU_PLL_FROM_BBP | CPU_PLL_FROM_XTAL | \ + DIS_BBP_SLEEP | EN_BBP_CLK) + xori t3, (CPU_PLL_FROM_BBP | CPU_PLL_FROM_XTAL) + +_cpu_pll_done: + sw t3, 0(t2) + + li t2, KSEG1ADDR(RBUSCTL_BASE + RBUSCTL_DYN_CFG0_REG) + lw t3, 0(t2) + ori t3, t3, (CPU_FDIV_M | CPU_FFRAC_M) + xori t3, t3, (CPU_FDIV_M | CPU_FFRAC_M) + ori t3, t3, ((1 << CPU_FDIV_S) | (1 << CPU_FFRAC_S)) + sw t3, 0(t2) + + /* Clear WST & SPR bits in ErrCtl */ + mfc0 t0, CP0_ECC + ins t0, zero, 30, 2 + mtc0 t0, CP0_ECC + ehb + + /* Simply initialize I-Cache */ + li a0, 0 + li a1, CONFIG_SYS_ICACHE_SIZE + + mtc0 zero, CP0_TAGLO /* Zero to DDataLo */ + +1: cache INDEX_STORE_TAG_I, 0(a0) + addiu a0, CONFIG_SYS_ICACHE_LINE_SIZE + bne a0, a1, 1b + nop + + /* Simply initialize D-Cache */ + li a0, 0 + li a1, CONFIG_SYS_DCACHE_SIZE + + mtc0 zero, CP0_TAGLO, 2 + +2: cache INDEX_STORE_TAG_D, 0(a0) + addiu a0, CONFIG_SYS_DCACHE_LINE_SIZE + bne a0, a1, 2b + nop + + /* Set KSEG0 Cachable */ + mfc0 t0, CP0_CONFIG + and t0, t0, MIPS_CONF_IMPL + or t0, t0, CONF_CM_CACHABLE_NONCOHERENT + mtc0 t0, CP0_CONFIG + ehb + + /* Lock D-Cache */ + PTR_LI a0, CACHE_STACK_BASE /* D-Cache lock base */ + li a1, CACHE_STACK_SIZE /* D-Cache lock size */ + li a2, 0x1ffff800 /* Mask of DTagLo[PTagLo] */ + +3: + /* Lock one cacheline */ + and t0, a0, a2 + ori t0, 0xe0 /* Valid & Dirty & Lock bits */ + mtc0 t0, CP0_TAGLO, 2 /* Write to DTagLo */ + ehb + cache INDEX_STORE_TAG_D, 0(a0) + + addiu a0, CONFIG_SYS_DCACHE_LINE_SIZE + sub a1, CONFIG_SYS_DCACHE_LINE_SIZE + bnez a1, 3b + nop +#endif /* CONFIG_SKIP_LOWLEVEL_INIT */ + + jr ra + nop + END(mips_sram_init) + +NESTED(lowlevel_init, 0, ra) + /* Save ra and do real lowlevel initialization */ + move s0, ra + + PTR_LA t9, mt7628_init + jalr t9 + nop + + move ra, s0 + +#if CONFIG_IS_ENABLED(INIT_STACK_WITHOUT_MALLOC_F) + /* Set malloc base */ + li t0, (CONFIG_SYS_INIT_SP_ADDR + 15) & (~15) + PTR_S t0, GD_MALLOC_BASE(k0) # gd->malloc_base offset +#endif + + /* Write back data in locked cache to DRAM */ + PTR_LI a0, CACHE_STACK_BASE /* D-Cache unlock base */ + li a1, CACHE_STACK_SIZE /* D-Cache unlock size */ + +1: + cache HIT_WRITEBACK_INV_D, 0(a0) + addiu a0, CONFIG_SYS_DCACHE_LINE_SIZE + sub a1, CONFIG_SYS_DCACHE_LINE_SIZE + bnez a1, 1b + nop + + /* Set KSEG0 Uncached */ + mfc0 t0, CP0_CONFIG + and t0, t0, MIPS_CONF_IMPL + or t0, t0, CONF_CM_UNCACHED + mtc0 t0, CP0_CONFIG + ehb + + jr ra + nop + END(lowlevel_init) diff --git a/arch/mips/mach-mtmips/mt7628/mt7628.h b/arch/mips/mach-mtmips/mt7628/mt7628.h new file mode 100644 index 0000000..391880b --- /dev/null +++ b/arch/mips/mach-mtmips/mt7628/mt7628.h @@ -0,0 +1,104 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +#ifndef _MT7628_H_ +#define _MT7628_H_ + +#define SYSCTL_BASE 0x10000000 +#define SYSCTL_SIZE 0x100 +#define MEMCTL_BASE 0x10000300 +#define MEMCTL_SIZE 0x100 +#define RBUSCTL_BASE 0x10000400 +#define RBUSCTL_SIZE 0x100 +#define RGCTL_BASE 0x10001000 +#define RGCTL_SIZE 0x800 + +#define SYSCTL_EFUSE_CFG_REG 0x08 +#define EFUSE_MT7688 0x100000 + +#define SYSCTL_CHIP_REV_ID_REG 0x0c +#define PKG_ID 0x10000 +#define PKG_ID_AN 1 +#define PKG_ID_KN 0 +#define VER_S 8 +#define VER_M 0xf00 +#define ECO_S 0 +#define ECO_M 0x0f + +#define SYSCTL_SYSCFG0_REG 0x10 +#define XTAL_FREQ_SEL 0x40 +#define XTAL_40MHZ 1 +#define XTAL_25MHZ 0 +#define CHIP_MODE_S 1 +#define CHIP_MODE_M 0x0e +#define DRAM_TYPE 0x01 +#define DRAM_DDR1 1 +#define DRAM_DDR2 0 + +#define SYSCTL_ROM_STATUS_REG 0x28 + +#define SYSCTL_CLKCFG0_REG 0x2c +#define DIS_BBP_SLEEP 0x08 +#define EN_BBP_CLK 0x04 +#define CPU_PLL_FROM_BBP 0x02 +#define CPU_PLL_FROM_XTAL 0x01 + +#define SYSCTL_RSTCTL_REG 0x34 +#define MC_RST 0x400 + +#define SYSCTL_AGPIO_CFG_REG 0x3c +#define EPHY_GPIO_AIO_EN_S 17 +#define EPHY_GPIO_AIO_EN_M 0x1e0000 + +#define SYSCTL_GPIO_MODE1_REG 0x60 +#define UART2_MODE_S 26 +#define UART2_MODE_M 0xc000000 +#define UART1_MODE_S 24 +#define UART1_MODE_M 0x3000000 +#define UART0_MODE_S 8 +#define UART0_MODE_M 0x300 +#define SPIS_MODE_S 2 +#define SPIS_MODE_M 0x0c + +#define RBUSCTL_DYN_CFG0_REG 0x40 +#define CPU_FDIV_S 8 +#define CPU_FDIV_M 0xf00 +#define CPU_FFRAC_S 0 +#define CPU_FFRAC_M 0x0f + +#define RGCTL_PMU_G0_REG 0x100 +#define PMU_CFG_EN 0x80000000 + +#define RGCTL_PMU_G1_REG 0x104 +#define RG_BUCK_FPWM 0x02 + +#define RGCTL_PMU_G3_REG 0x10c +#define NI_DDRLDO_STB 0x40000 +#define NI_DDRLDO_EN 0x10000 +#define RG_DDRLDO_VOSEL 0x40 + +#define RGCTL_DDR_PAD_CK_G0_REG 0x700 +#define RGCTL_DDR_PAD_CMD_G0_REG 0x708 +#define RGCTL_DDR_PAD_DQ_G0_REG 0x710 +#define RGCTL_DDR_PAD_DQS_G0_REG 0x718 +#define RTT_S 8 +#define RTT_M 0x700 + +#define RGCTL_DDR_PAD_CK_G1_REG 0x704 +#define RGCTL_DDR_PAD_CMD_G1_REG 0x70c +#define RGCTL_DDR_PAD_DQ_G1_REG 0x714 +#define RGCTL_DDR_PAD_DQS_G1_REG 0x71c +#define DRVP_S 0 +#define DRVP_M 0x0f +#define DRVN_S 8 +#define DRVN_M 0xf00 + +#ifndef __ASSEMBLY__ +void mt7628_ddr_init(void); +#endif + +#endif /* _MT7628_H_ */ diff --git a/arch/mips/mach-mtmips/mt7628/serial.c b/arch/mips/mach-mtmips/mt7628/serial.c new file mode 100644 index 0000000..a7d3247 --- /dev/null +++ b/arch/mips/mach-mtmips/mt7628/serial.c @@ -0,0 +1,34 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +#include <common.h> +#include <asm/io.h> +#include "mt7628.h" + +void mtmips_spl_serial_init(void) +{ +#ifdef CONFIG_SPL_SERIAL_SUPPORT + void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + +#if CONFIG_CONS_INDEX == 1 + clrbits_32(base + SYSCTL_GPIO_MODE1_REG, UART0_MODE_M); +#elif CONFIG_CONS_INDEX == 2 + clrbits_32(base + SYSCTL_GPIO_MODE1_REG, UART1_MODE_M); +#elif CONFIG_CONS_INDEX == 3 + setbits_32(base + SYSCTL_AGPIO_CFG_REG, EPHY_GPIO_AIO_EN_M); +#ifdef CONFIG_SPL_UART2_SPIS_PINMUX + setbits_32(base + SYSCTL_GPIO_MODE1_REG, SPIS_MODE_M); + clrsetbits_32(base + SYSCTL_GPIO_MODE1_REG, UART2_MODE_M, + 1 << UART2_MODE_S); +#else + clrbits_32(base + SYSCTL_GPIO_MODE1_REG, UART2_MODE_M); + clrsetbits_32(base + SYSCTL_GPIO_MODE1_REG, SPIS_MODE_M, + 1 << SPIS_MODE_S); +#endif /* CONFIG_SPL_UART2_SPIS_PINMUX */ +#endif /* CONFIG_CONS_INDEX */ +#endif /* CONFIG_SPL_SERIAL_SUPPORT */ +} diff --git a/arch/mips/mach-mtmips/mt76xx.h b/arch/mips/mach-mtmips/mt76xx.h deleted file mode 100644 index 17473ea..0000000 --- a/arch/mips/mach-mtmips/mt76xx.h +++ /dev/null @@ -1,32 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ -/* - * Copyright (C) 2018 Stefan Roese <sr@denx.de> - */ - -#ifndef __MT76XX_H -#define __MT76XX_H - -#define MT76XX_SYSCTL_BASE 0x10000000 - -#define MT76XX_CHIPID_OFFS 0x00 -#define MT76XX_CHIP_REV_ID_OFFS 0x0c -#define MT76XX_SYSCFG0_OFFS 0x10 - -#define MT76XX_MEMCTRL_BASE (MT76XX_SYSCTL_BASE + 0x0300) -#define MT76XX_RGCTRL_BASE (MT76XX_SYSCTL_BASE + 0x1000) - -#define MT76XX_ROM_STATUS_REG (MT76XX_SYSCTL_BASE + 0x0028) -#define MT76XX_CLKCFG0_REG (MT76XX_SYSCTL_BASE + 0x002c) -#define MT76XX_DYN_CFG0_REG (MT76XX_SYSCTL_BASE + 0x0440) - -#define DDR_CFG1_REG (MT76XX_MEMCTRL_BASE + 0x44) -#define DDR_CFG2_REG (MT76XX_MEMCTRL_BASE + 0x48) -#define DDR_CFG3_REG (MT76XX_MEMCTRL_BASE + 0x4c) -#define DDR_CFG4_REG (MT76XX_MEMCTRL_BASE + 0x50) - -#ifndef __ASSEMBLY__ -/* Prototypes */ -void ddr_calibrate(void); -#endif - -#endif diff --git a/arch/mips/mach-mtmips/spl.c b/arch/mips/mach-mtmips/spl.c new file mode 100644 index 0000000..2a24af7 --- /dev/null +++ b/arch/mips/mach-mtmips/spl.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. All Rights Reserved. + * + * Author: Weijie Gao <weijie.gao@mediatek.com> + */ + +#include <common.h> +#include <fdt.h> +#include <spl.h> +#include <asm/sections.h> +#include <linux/sizes.h> +#include <mach/serial.h> + +void __noreturn board_init_f(ulong dummy) +{ + spl_init(); + +#ifdef CONFIG_SPL_SERIAL_SUPPORT + /* + * mtmips_spl_serial_init() is useful if debug uart is enabled, + * or DM based serial is not enabled. + */ + mtmips_spl_serial_init(); + preloader_console_init(); +#endif + + board_init_r(NULL, 0); +} + +void board_boot_order(u32 *spl_boot_list) +{ + spl_boot_list[0] = BOOT_DEVICE_NOR; +} + +unsigned long spl_nor_get_uboot_base(void) +{ + void *uboot_base = __image_copy_end; + + if (fdt_magic(uboot_base) == FDT_MAGIC) + return (unsigned long)uboot_base + fdt_totalsize(uboot_base); + + return (unsigned long)uboot_base; +} |