diff options
Diffstat (limited to 'arch/riscv/cpu')
| -rw-r--r-- | arch/riscv/cpu/ax25/Kconfig | 6 | ||||
| -rw-r--r-- | arch/riscv/cpu/cpu.c | 6 | ||||
| -rw-r--r-- | arch/riscv/cpu/generic/Kconfig | 5 | ||||
| -rw-r--r-- | arch/riscv/cpu/start.S | 62 | ||||
| -rw-r--r-- | arch/riscv/cpu/u-boot-spl.lds | 82 |
5 files changed, 150 insertions, 11 deletions
diff --git a/arch/riscv/cpu/ax25/Kconfig b/arch/riscv/cpu/ax25/Kconfig index 6b4b92e692..f4b59cb71d 100644 --- a/arch/riscv/cpu/ax25/Kconfig +++ b/arch/riscv/cpu/ax25/Kconfig @@ -4,8 +4,8 @@ config RISCV_NDS imply CPU imply CPU_RISCV imply RISCV_TIMER - imply ANDES_PLIC if RISCV_MMODE - imply ANDES_PLMT if RISCV_MMODE + imply ANDES_PLIC if (RISCV_MMODE || SPL_RISCV_MMODE) + imply ANDES_PLMT if (RISCV_MMODE || SPL_RISCV_MMODE) help Run U-Boot on AndeStar V5 platforms and use some specific features which are provided by Andes Technology AndeStar V5 families. @@ -14,7 +14,7 @@ if RISCV_NDS config RISCV_NDS_CACHE bool "AndeStar V5 families specific cache support" - depends on RISCV_MMODE + depends on RISCV_MMODE || SPL_RISCV_MMODE help Provide Andes Technology AndeStar V5 families specific cache support. diff --git a/arch/riscv/cpu/cpu.c b/arch/riscv/cpu/cpu.c index 5ca185745e..e457f6acbf 100644 --- a/arch/riscv/cpu/cpu.c +++ b/arch/riscv/cpu/cpu.c @@ -46,13 +46,13 @@ static inline bool supports_extension(char ext) return false; #else /* !CONFIG_CPU */ -#ifdef CONFIG_RISCV_MMODE +#if CONFIG_IS_ENABLED(RISCV_MMODE) return csr_read(CSR_MISA) & (1 << (ext - 'a')); -#else /* !CONFIG_RISCV_MMODE */ +#else /* !CONFIG_IS_ENABLED(RISCV_MMODE) */ #warning "There is no way to determine the available extensions in S-mode." #warning "Please convert your board to use the RISC-V CPU driver." return false; -#endif /* CONFIG_RISCV_MMODE */ +#endif /* CONFIG_IS_ENABLED(RISCV_MMODE) */ #endif /* CONFIG_CPU */ } diff --git a/arch/riscv/cpu/generic/Kconfig b/arch/riscv/cpu/generic/Kconfig index 1d6ab5032d..b2cb155d6d 100644 --- a/arch/riscv/cpu/generic/Kconfig +++ b/arch/riscv/cpu/generic/Kconfig @@ -8,5 +8,8 @@ config GENERIC_RISCV imply CPU imply CPU_RISCV imply RISCV_TIMER - imply SIFIVE_CLINT if RISCV_MMODE + imply SIFIVE_CLINT if (RISCV_MMODE || SPL_RISCV_MMODE) imply CMD_CPU + imply SPL_CPU_SUPPORT + imply SPL_OPENSBI + imply SPL_LOAD_FIT diff --git a/arch/riscv/cpu/start.S b/arch/riscv/cpu/start.S index e06db404f5..b15209d623 100644 --- a/arch/riscv/cpu/start.S +++ b/arch/riscv/cpu/start.S @@ -39,7 +39,7 @@ secondary_harts_relocation_error: .section .text .globl _start _start: -#ifdef CONFIG_RISCV_MMODE +#if CONFIG_IS_ENABLED(RISCV_MMODE) csrr a0, CSR_MHARTID #endif @@ -62,7 +62,7 @@ _start: #ifdef CONFIG_SMP /* set xSIE bit to receive IPIs */ -#ifdef CONFIG_RISCV_MMODE +#if CONFIG_IS_ENABLED(RISCV_MMODE) li t0, MIE_MSIE #else li t0, SIE_SSIE @@ -75,7 +75,11 @@ _start: */ call_board_init_f: li t0, -16 +#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_STACK) + li t1, CONFIG_SPL_STACK +#else li t1, CONFIG_SYS_INIT_SP_ADDR +#endif and sp, t1, t0 /* force 16 byte alignment */ call_board_init_f_0: @@ -159,7 +163,57 @@ wait_for_gd_init: mv a0, zero /* a0 <-- boot_flags = 0 */ la t5, board_init_f - jr t5 /* jump to board_init_f() */ + jalr t5 /* jump to board_init_f() */ + +#ifdef CONFIG_SPL_BUILD +spl_clear_bss: + la t0, __bss_start + la t1, __bss_end + beq t0, t1, spl_stack_gd_setup + +spl_clear_bss_loop: + SREG zero, 0(t0) + addi t0, t0, REGBYTES + bne t0, t1, spl_clear_bss_loop + +spl_stack_gd_setup: + jal spl_relocate_stack_gd + + /* skip setup if we did not relocate */ + beqz a0, spl_call_board_init_r + mv s0, a0 + + /* setup stack on main hart */ +#ifdef CONFIG_SMP + /* tp: hart id */ + slli t0, tp, CONFIG_STACK_SIZE_SHIFT + sub sp, s0, t0 +#else + mv sp, s0 +#endif + + /* set new stack and global data pointer on secondary harts */ +spl_secondary_hart_stack_gd_setup: + la a0, secondary_hart_relocate + mv a1, s0 + mv a2, s0 + jal smp_call_function + + /* hang if relocation of secondary harts has failed */ + beqz a0, 1f + mv a1, a0 + la a0, secondary_harts_relocation_error + jal printf + jal hang + + /* set new global data pointer on main hart */ +1: mv gp, s0 + +spl_call_board_init_r: + mv a0, zero + mv a1, zero + jal board_init_r +#endif /* * void relocate_code (addr_sp, gd, addr_moni) @@ -344,7 +398,7 @@ secondary_hart_loop: #ifdef CONFIG_SMP csrr t0, MODE_PREFIX(ip) -#ifdef CONFIG_RISCV_MMODE +#if CONFIG_IS_ENABLED(RISCV_MMODE) andi t0, t0, MIE_MSIE #else andi t0, t0, SIE_SSIE diff --git a/arch/riscv/cpu/u-boot-spl.lds b/arch/riscv/cpu/u-boot-spl.lds new file mode 100644 index 0000000000..32255d58de --- /dev/null +++ b/arch/riscv/cpu/u-boot-spl.lds @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Based on arch/riscv/cpu/u-boot.lds, which is + * Copyright (C) 2017 Andes Technology Corporation + * Rick Chen, Andes Technology Corporation <rick@andestech.com> + * + * and arch/mips/cpu/u-boot-spl.lds. + */ +MEMORY { .spl_mem : ORIGIN = IMAGE_TEXT_BASE, LENGTH = IMAGE_MAX_SIZE } +MEMORY { .bss_mem : ORIGIN = CONFIG_SPL_BSS_START_ADDR, \ + LENGTH = CONFIG_SPL_BSS_MAX_SIZE } + +OUTPUT_ARCH("riscv") +ENTRY(_start) + +SECTIONS +{ + . = ALIGN(4); + .text : { + arch/riscv/cpu/start.o (.text) + *(.text*) + } > .spl_mem + + . = ALIGN(4); + .rodata : { + *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) + } > .spl_mem + + . = ALIGN(4); + .data : { + *(.data*) + } > .spl_mem + . = ALIGN(4); + + .got : { + __got_start = .; + *(.got.plt) *(.got) + __got_end = .; + } > .spl_mem + + . = ALIGN(4); + + .u_boot_list : { + KEEP(*(SORT(.u_boot_list*))); + } > .spl_mem + + . = ALIGN(4); + + .binman_sym_table : { + __binman_sym_start = .; + KEEP(*(SORT(.binman_sym*))); + __binman_sym_end = .; + } > .spl_mem + + . = ALIGN(4); + + /DISCARD/ : { *(.rela.plt*) } + .rela.dyn : { + __rel_dyn_start = .; + *(.rela*) + __rel_dyn_end = .; + } > .spl_mem + + . = ALIGN(4); + + .dynsym : { + __dyn_sym_start = .; + *(.dynsym) + __dyn_sym_end = .; + } > .spl_mem + + . = ALIGN(4); + + _end = .; + + .bss : { + __bss_start = .; + *(.bss*) + . = ALIGN(4); + __bss_end = .; + } > .bss_mem +} |