diff options
Diffstat (limited to 'arch/arm/mach-k3/am62ax/am62a7_init.c')
| -rw-r--r-- | arch/arm/mach-k3/am62ax/am62a7_init.c | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/arch/arm/mach-k3/am62ax/am62a7_init.c b/arch/arm/mach-k3/am62ax/am62a7_init.c new file mode 100644 index 0000000..0f62f39 --- /dev/null +++ b/arch/arm/mach-k3/am62ax/am62a7_init.c @@ -0,0 +1,272 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * AM62A7: SoC specific initialization + * + * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/ + */ + +#include <spl.h> +#include <asm/io.h> +#include <asm/arch/hardware.h> +#include <dm.h> +#include <dm/uclass-internal.h> +#include <dm/pinctrl.h> + +#include "../sysfw-loader.h" +#include "../common.h" + +struct fwl_data cbass_main_fwls[] = { + { "FSS_DAT_REG3", 7, 8 }, +}; + +/* + * This uninitialized global variable would normal end up in the .bss section, + * but the .bss is cleared between writing and reading this variable, so move + * it to the .data section. + */ +u32 bootindex __section(".data"); +static struct rom_extended_boot_data bootdata __section(".data"); + +static void store_boot_info_from_rom(void) +{ + bootindex = *(u32 *)(CONFIG_SYS_K3_BOOT_PARAM_TABLE_INDEX); + + if (IS_ENABLED(CONFIG_CPU_V7R)) { + memcpy(&bootdata, (uintptr_t *)ROM_EXTENDED_BOOT_DATA_INFO, + sizeof(struct rom_extended_boot_data)); + } +} + +static void ctrl_mmr_unlock(void) +{ + /* Unlock all WKUP_CTRL_MMR0 module registers */ + mmr_unlock(WKUP_CTRL_MMR0_BASE, 0); + mmr_unlock(WKUP_CTRL_MMR0_BASE, 1); + mmr_unlock(WKUP_CTRL_MMR0_BASE, 2); + mmr_unlock(WKUP_CTRL_MMR0_BASE, 3); + mmr_unlock(WKUP_CTRL_MMR0_BASE, 4); + mmr_unlock(WKUP_CTRL_MMR0_BASE, 5); + mmr_unlock(WKUP_CTRL_MMR0_BASE, 6); + mmr_unlock(WKUP_CTRL_MMR0_BASE, 7); + + /* Unlock all CTRL_MMR0 module registers */ + mmr_unlock(CTRL_MMR0_BASE, 0); + mmr_unlock(CTRL_MMR0_BASE, 1); + mmr_unlock(CTRL_MMR0_BASE, 2); + mmr_unlock(CTRL_MMR0_BASE, 4); + mmr_unlock(CTRL_MMR0_BASE, 5); + mmr_unlock(CTRL_MMR0_BASE, 6); + + /* Unlock all MCU_CTRL_MMR0 module registers */ + mmr_unlock(MCU_CTRL_MMR0_BASE, 0); + mmr_unlock(MCU_CTRL_MMR0_BASE, 1); + mmr_unlock(MCU_CTRL_MMR0_BASE, 2); + mmr_unlock(MCU_CTRL_MMR0_BASE, 3); + mmr_unlock(MCU_CTRL_MMR0_BASE, 4); + mmr_unlock(MCU_CTRL_MMR0_BASE, 6); + + /* Unlock PADCFG_CTRL_MMR padconf registers */ + mmr_unlock(PADCFG_MMR0_BASE, 1); + mmr_unlock(PADCFG_MMR1_BASE, 1); +} + +void board_init_f(ulong dummy) +{ + struct udevice *dev; + int ret; + +#if defined(CONFIG_CPU_V7R) + setup_k3_mpu_regions(); +#endif + + /* + * Cannot delay this further as there is a chance that + * K3_BOOT_PARAM_TABLE_INDEX can be over written by SPL MALLOC section. + */ + store_boot_info_from_rom(); + + ctrl_mmr_unlock(); + + /* Init DM early */ + spl_early_init(); + + /* + * Process pinctrl for the serial0 and serial3, aka WKUP_UART0 and + * MAIN_UART1 modules and continue regardless of the result of pinctrl. + * Do this without probing the device, but instead by searching the + * device that would request the given sequence number if probed. The + * UARTs will be used by the DM firmware and TIFS firmware images + * respectively and the firmware depend on SPL to initialize the pin + * settings. + */ + ret = uclass_find_device_by_seq(UCLASS_SERIAL, 0, &dev); + if (!ret) + pinctrl_select_state(dev, "default"); + + ret = uclass_find_device_by_seq(UCLASS_SERIAL, 3, &dev); + if (!ret) + pinctrl_select_state(dev, "default"); + +#ifdef CONFIG_K3_EARLY_CONS + /* + * Allow establishing an early console as required for example when + * doing a UART-based boot. Note that this console may not "survive" + * through a SYSFW PM-init step and will need a re-init in some way + * due to changing module clock frequencies. + */ + early_console_init(); +#endif + +#if defined(CONFIG_K3_LOAD_SYSFW) + /* + * Configure and start up system controller firmware. Provide + * the U-Boot console init function to the SYSFW post-PM configuration + * callback hook, effectively switching on (or over) the console + * output. + */ + ret = is_rom_loaded_sysfw(&bootdata); + if (!ret) + panic("ROM has not loaded TIFS firmware\n"); + + k3_sysfw_loader(true, NULL, NULL); + + /* Disable ROM configured firewalls right after loading sysfw */ + remove_fwl_configs(cbass_main_fwls, ARRAY_SIZE(cbass_main_fwls)); +#endif + +#if defined(CONFIG_CPU_V7R) + /* + * Relocate boot information to OCRAM (after TIFS has opend this + * region for us) so the next bootloader stages can keep access to + * primary vs backup bootmodes. + */ + writel(bootindex, K3_BOOT_PARAM_TABLE_INDEX_OCRAM); +#endif + + /* + * Force probe of clk_k3 driver here to ensure basic default clock + * configuration is always done. + */ + if (IS_ENABLED(CONFIG_SPL_CLK_K3)) { + ret = uclass_get_device_by_driver(UCLASS_CLK, + DM_DRIVER_GET(ti_clk), + &dev); + if (ret) + printf("Failed to initialize clk-k3!\n"); + } + + preloader_console_init(); + + /* Output System Firmware version info */ + k3_sysfw_print_ver(); + +#if defined(CONFIG_K3_AM62A_DDRSS) + ret = uclass_get_device(UCLASS_RAM, 0, &dev); + if (ret) + panic("DRAM init failed: %d\n", ret); +#endif + + setup_qos(); + + debug("am62a_init: %s done\n", __func__); +} + +static u32 __get_backup_bootmedia(u32 devstat) +{ + u32 bkup_bootmode = (devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_MASK) >> + MAIN_DEVSTAT_BACKUP_BOOTMODE_SHIFT; + u32 bkup_bootmode_cfg = + (devstat & MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_MASK) >> + MAIN_DEVSTAT_BACKUP_BOOTMODE_CFG_SHIFT; + + switch (bkup_bootmode) { + case BACKUP_BOOT_DEVICE_UART: + return BOOT_DEVICE_UART; + + case BACKUP_BOOT_DEVICE_USB: + return BOOT_DEVICE_USB; + + case BACKUP_BOOT_DEVICE_ETHERNET: + return BOOT_DEVICE_ETHERNET; + + case BACKUP_BOOT_DEVICE_MMC: + if (bkup_bootmode_cfg) + return BOOT_DEVICE_MMC2; + return BOOT_DEVICE_MMC1; + + case BACKUP_BOOT_DEVICE_SPI: + return BOOT_DEVICE_SPI; + + case BACKUP_BOOT_DEVICE_I2C: + return BOOT_DEVICE_I2C; + + case BACKUP_BOOT_DEVICE_DFU: + if (bkup_bootmode_cfg & MAIN_DEVSTAT_BACKUP_USB_MODE_MASK) + return BOOT_DEVICE_USB; + return BOOT_DEVICE_DFU; + }; + + return BOOT_DEVICE_RAM; +} + +static u32 __get_primary_bootmedia(u32 devstat) +{ + u32 bootmode = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_MASK) >> + MAIN_DEVSTAT_PRIMARY_BOOTMODE_SHIFT; + u32 bootmode_cfg = (devstat & MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_MASK) >> + MAIN_DEVSTAT_PRIMARY_BOOTMODE_CFG_SHIFT; + + switch (bootmode) { + case BOOT_DEVICE_OSPI: + fallthrough; + case BOOT_DEVICE_QSPI: + fallthrough; + case BOOT_DEVICE_XSPI: + fallthrough; + case BOOT_DEVICE_SPI: + return BOOT_DEVICE_SPI; + + case BOOT_DEVICE_ETHERNET_RGMII: + fallthrough; + case BOOT_DEVICE_ETHERNET_RMII: + return BOOT_DEVICE_ETHERNET; + + case BOOT_DEVICE_EMMC: + return BOOT_DEVICE_MMC1; + + case BOOT_DEVICE_SPI_NAND: + return BOOT_DEVICE_SPINAND; + + case BOOT_DEVICE_MMC: + if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_MMC_PORT_MASK) >> + MAIN_DEVSTAT_PRIMARY_MMC_PORT_SHIFT) + return BOOT_DEVICE_MMC2; + return BOOT_DEVICE_MMC1; + + case BOOT_DEVICE_DFU: + if ((bootmode_cfg & MAIN_DEVSTAT_PRIMARY_USB_MODE_MASK) >> + MAIN_DEVSTAT_PRIMARY_USB_MODE_SHIFT) + return BOOT_DEVICE_USB; + return BOOT_DEVICE_DFU; + + case BOOT_DEVICE_NOBOOT: + return BOOT_DEVICE_RAM; + } + + return bootmode; +} + +u32 spl_boot_device(void) +{ + u32 devstat = readl(CTRLMMR_MAIN_DEVSTAT); + u32 bootmedia; + + if (bootindex == K3_PRIMARY_BOOTMODE) + bootmedia = __get_primary_bootmedia(devstat); + else + bootmedia = __get_backup_bootmedia(devstat); + + debug("am62a_init: %s: devstat = 0x%x bootmedia = 0x%x bootindex = %d\n", + __func__, devstat, bootmedia, bootindex); + return bootmedia; +} |