diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/riscv/Kconfig | 8 | ||||
| -rw-r--r-- | arch/riscv/cpu/jh7110/Kconfig | 2 | ||||
| -rw-r--r-- | arch/riscv/cpu/jh7110/spl.c | 25 | ||||
| -rw-r--r-- | arch/riscv/cpu/start.S | 12 | ||||
| -rw-r--r-- | arch/riscv/dts/jh7110-starfive-visionfive-2.dtsi | 2 | ||||
| -rw-r--r-- | arch/riscv/include/asm/sbi.h | 2 |
6 files changed, 25 insertions, 26 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 867cbcb..6771d8d 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -64,6 +64,14 @@ config SPL_SYS_DCACHE_OFF help Do not enable data cache in SPL. +config SPL_ZERO_MEM_BEFORE_USE + bool "Zero memory before use" + depends on SPL + default n + help + Zero stack/GD/malloc area in SPL before using them, this is needed for + Sifive core devices that uses L2 cache to store SPL. + # board-specific options below source "board/AndesTech/ae350/Kconfig" source "board/emulation/qemu-riscv/Kconfig" diff --git a/arch/riscv/cpu/jh7110/Kconfig b/arch/riscv/cpu/jh7110/Kconfig index 4d95811..8469ee7 100644 --- a/arch/riscv/cpu/jh7110/Kconfig +++ b/arch/riscv/cpu/jh7110/Kconfig @@ -13,6 +13,8 @@ config STARFIVE_JH7110 select SUPPORT_SPL select SPL_RAM if SPL select SPL_STARFIVE_DDR + select SYS_CACHE_SHIFT_6 + select SPL_ZERO_MEM_BEFORE_USE select PINCTRL_STARFIVE_JH7110 imply MMC imply MMC_BROKEN_CD diff --git a/arch/riscv/cpu/jh7110/spl.c b/arch/riscv/cpu/jh7110/spl.c index 72adcef..4047b10 100644 --- a/arch/riscv/cpu/jh7110/spl.c +++ b/arch/riscv/cpu/jh7110/spl.c @@ -13,7 +13,6 @@ #include <init.h> #define CSR_U74_FEATURE_DISABLE 0x7c1 -#define L2_LIM_MEM_END 0x81FFFFFUL DECLARE_GLOBAL_DATA_PTR; @@ -59,9 +58,6 @@ int spl_soc_init(void) void harts_early_init(void) { - ulong *ptr; - u8 *tmp; - ulong len, remain; /* * Feature Disable CSR * @@ -70,25 +66,4 @@ void harts_early_init(void) */ if (CONFIG_IS_ENABLED(RISCV_MMODE)) csr_write(CSR_U74_FEATURE_DISABLE, 0); - - /* clear L2 LIM memory - * set __bss_end to 0x81FFFFF region to zero - * The L2 Cache Controller supports ECC. ECC is applied to SRAM. - * If it is not cleared, the ECC part is invalid, and an ECC error - * will be reported when reading data. - */ - ptr = (ulong *)&__bss_end; - len = L2_LIM_MEM_END - (ulong)&__bss_end; - remain = len % sizeof(ulong); - len /= sizeof(ulong); - - while (len--) - *ptr++ = 0; - - /* clear the remain bytes */ - if (remain) { - tmp = (u8 *)ptr; - while (remain--) - *tmp++ = 0; - } } diff --git a/arch/riscv/cpu/start.S b/arch/riscv/cpu/start.S index 59d58a5..30cf674 100644 --- a/arch/riscv/cpu/start.S +++ b/arch/riscv/cpu/start.S @@ -111,6 +111,18 @@ call_board_init_f: * It's essential before any function call, otherwise, we get data-race. */ +/* clear stack if necessary */ +#if CONFIG_IS_ENABLED(ZERO_MEM_BEFORE_USE) +clear_stack: + li t1, 1 + slli t1, t1, CONFIG_STACK_SIZE_SHIFT + sub t1, sp, t1 +clear_stack_loop: + SREG zero, 0(t1) /* t1 is always 16 byte aligned */ + addi t1, t1, REGBYTES + blt t1, sp, clear_stack_loop +#endif + call_board_init_f_0: /* find top of reserve space */ #if CONFIG_IS_ENABLED(SMP) diff --git a/arch/riscv/dts/jh7110-starfive-visionfive-2.dtsi b/arch/riscv/dts/jh7110-starfive-visionfive-2.dtsi index bf7fdb4..e40f57a 100644 --- a/arch/riscv/dts/jh7110-starfive-visionfive-2.dtsi +++ b/arch/riscv/dts/jh7110-starfive-visionfive-2.dtsi @@ -311,7 +311,7 @@ &pcie0 { reset-gpios = <&sysgpio 26 GPIO_ACTIVE_LOW>; - status = "disabled"; + status = "okay"; }; &pcie1 { diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h index 7693699..009a268 100644 --- a/arch/riscv/include/asm/sbi.h +++ b/arch/riscv/include/asm/sbi.h @@ -31,6 +31,8 @@ enum sbi_ext_id { SBI_EXT_DBCN = 0x4442434E, SBI_EXT_SUSP = 0x53555350, SBI_EXT_CPPC = 0x43505043, + SBI_EXT_NACL = 0x4E41434C, + SBI_EXT_STA = 0x535441, }; enum sbi_ext_base_fid { |