Add some common library routines for the architecture.
Signed-off-by: Jiaxun Yang jiaxun.yang@flygoat.com --- arch/loongarch/lib/Makefile | 7 ++++ arch/loongarch/lib/asm-offsets.c | 66 ++++++++++++++++++++++++++++++++++++ arch/loongarch/lib/boot.c | 14 ++++++++ arch/loongarch/lib/cache.c | 73 ++++++++++++++++++++++++++++++++++++++++ arch/loongarch/lib/reset.c | 14 ++++++++ arch/loongarch/lib/setjmp.S | 52 ++++++++++++++++++++++++++++ 6 files changed, 226 insertions(+)
diff --git a/arch/loongarch/lib/Makefile b/arch/loongarch/lib/Makefile index 3dbed94cc624..3c17b9cd85af 100644 --- a/arch/loongarch/lib/Makefile +++ b/arch/loongarch/lib/Makefile @@ -3,3 +3,10 @@ # Copyright (C) 2024 Jiaxun yang jiaxun.yang@flygoat.com #
+obj-$(CONFIG_CMD_GO) += boot.o +obj-y += cache.o +obj-y += interrupts.o +ifeq ($(CONFIG_$(SPL_)SYSRESET),) +obj-y += reset.o +endif +obj-y += setjmp.o diff --git a/arch/loongarch/lib/asm-offsets.c b/arch/loongarch/lib/asm-offsets.c new file mode 100644 index 000000000000..e3f4c629b63d --- /dev/null +++ b/arch/loongarch/lib/asm-offsets.c @@ -0,0 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2024 Jiaxun Yang jiaxun.yang@flygoat.com + * + * From arch/x86/lib/asm-offsets.c + * + * This program is used to generate definitions needed by + * assembly language modules. + */ + +#include <asm/global_data.h> +#include <asm/ptrace.h> +#include <linux/kbuild.h> + +static void __used output_ptreg_defines(void) +{ + COMMENT("LoongArch pt_regs offsets."); + OFFSET(PT_R0, pt_regs, regs[0]); + OFFSET(PT_R1, pt_regs, regs[1]); + OFFSET(PT_R2, pt_regs, regs[2]); + OFFSET(PT_R3, pt_regs, regs[3]); + OFFSET(PT_R4, pt_regs, regs[4]); + OFFSET(PT_R5, pt_regs, regs[5]); + OFFSET(PT_R6, pt_regs, regs[6]); + OFFSET(PT_R7, pt_regs, regs[7]); + OFFSET(PT_R8, pt_regs, regs[8]); + OFFSET(PT_R9, pt_regs, regs[9]); + OFFSET(PT_R10, pt_regs, regs[10]); + OFFSET(PT_R11, pt_regs, regs[11]); + OFFSET(PT_R12, pt_regs, regs[12]); + OFFSET(PT_R13, pt_regs, regs[13]); + OFFSET(PT_R14, pt_regs, regs[14]); + OFFSET(PT_R15, pt_regs, regs[15]); + OFFSET(PT_R16, pt_regs, regs[16]); + OFFSET(PT_R17, pt_regs, regs[17]); + OFFSET(PT_R18, pt_regs, regs[18]); + OFFSET(PT_R19, pt_regs, regs[19]); + OFFSET(PT_R20, pt_regs, regs[20]); + OFFSET(PT_R21, pt_regs, regs[21]); + OFFSET(PT_R22, pt_regs, regs[22]); + OFFSET(PT_R23, pt_regs, regs[23]); + OFFSET(PT_R24, pt_regs, regs[24]); + OFFSET(PT_R25, pt_regs, regs[25]); + OFFSET(PT_R26, pt_regs, regs[26]); + OFFSET(PT_R27, pt_regs, regs[27]); + OFFSET(PT_R28, pt_regs, regs[28]); + OFFSET(PT_R29, pt_regs, regs[29]); + OFFSET(PT_R30, pt_regs, regs[30]); + OFFSET(PT_R31, pt_regs, regs[31]); + OFFSET(PT_CRMD, pt_regs, csr_crmd); + OFFSET(PT_PRMD, pt_regs, csr_prmd); + OFFSET(PT_EUEN, pt_regs, csr_euen); + OFFSET(PT_ECFG, pt_regs, csr_ecfg); + OFFSET(PT_ESTAT, pt_regs, csr_estat); + OFFSET(PT_ERA, pt_regs, csr_era); + OFFSET(PT_BVADDR, pt_regs, csr_badvaddr); + OFFSET(PT_ORIG_A0, pt_regs, orig_a0); + DEFINE(PT_SIZE, sizeof(struct pt_regs)); + BLANK(); +} + +int main(void) +{ + output_ptreg_defines(); + return 0; +} diff --git a/arch/loongarch/lib/boot.c b/arch/loongarch/lib/boot.c new file mode 100644 index 000000000000..327be16bb59f --- /dev/null +++ b/arch/loongarch/lib/boot.c @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2024 Jiaxun Yang jiaxun.yang@flygoat.com + */ + +#include <asm/u-boot.h> + +unsigned long do_go_exec(ulong (*entry)(int, char * const []), + int argc, char *const argv[]) +{ + cleanup_before_linux(); + + return entry(argc, argv); +} diff --git a/arch/loongarch/lib/cache.c b/arch/loongarch/lib/cache.c new file mode 100644 index 000000000000..54566edef8a3 --- /dev/null +++ b/arch/loongarch/lib/cache.c @@ -0,0 +1,73 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2024 Jiaxun Yang jiaxun.yang@flygoat.com + */ + +#include <cpu_func.h> +#include <asm/cache.h> +#include <asm/loongarch.h> + +void invalidate_icache_all(void) +{ + asm volatile ("\tibar 0\n"::); +} + +__weak void flush_dcache_all(void) +{ + asm volatile ("\tdbar 0\n"::); +} + +__weak void flush_dcache_range(unsigned long start, unsigned long end) +{ + /* Placeholder */ + flush_dcache_all(); +} + +__weak void invalidate_icache_range(unsigned long start, unsigned long end) +{ + /* LoongArch mandatory hardware I-Cache coherence */ + invalidate_icache_all(); +} + +__weak void invalidate_dcache_range(unsigned long start, unsigned long end) +{ + /* Placeholder */ + flush_dcache_all(); +} + +__weak void cache_flush(void) +{ + /* Placeholder */ + flush_dcache_all(); +} + +__weak void cache_invalidate(void) +{ + /* Placeholder */ + flush_dcache_all(); +} + +__weak void flush_cache(unsigned long addr, unsigned long size) +{ + cache_flush(); +} + +__weak void dcache_enable(void) +{ +} + +__weak void dcache_disable(void) +{ +} + +__weak int dcache_status(void) +{ + return 0; +} + +__weak void enable_caches(void) +{ + cache_invalidate(); + /* Enable cache for direct address translation mode */ + csr_xchg64(1 << CSR_CRMD_DACM_SHIFT, CSR_CRMD_DACM, LOONGARCH_CSR_CRMD); +} diff --git a/arch/loongarch/lib/reset.c b/arch/loongarch/lib/reset.c new file mode 100644 index 000000000000..ddf29ee41d95 --- /dev/null +++ b/arch/loongarch/lib/reset.c @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2024 Jiaxun Yang jiaxun.yang@flygoat.com + */ + +#include <command.h> +#include <cpu_func.h> + +int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) +{ + reset_cpu(); + + return 0; +} diff --git a/arch/loongarch/lib/setjmp.S b/arch/loongarch/lib/setjmp.S new file mode 100644 index 000000000000..12981d0013fa --- /dev/null +++ b/arch/loongarch/lib/setjmp.S @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2024 Jiaxun Yang jiaxun.yang@flygoat.com + */ + +#include <config.h> +#include <asm/asm.h> +#include <linux/linkage.h> + +.pushsection .text.setjmp, "ax" +ENTRY(setjmp) + LONG_S s0, a0, 0 + LONG_S s1, a0, (1 * LONGSIZE) + LONG_S s2, a0, (2 * LONGSIZE) + LONG_S s3, a0, (3 * LONGSIZE) + LONG_S s4, a0, (4 * LONGSIZE) + LONG_S s5, a0, (5 * LONGSIZE) + LONG_S s6, a0, (6 * LONGSIZE) + LONG_S s7, a0, (7 * LONGSIZE) + LONG_S s8, a0, (8 * LONGSIZE) + LONG_S fp, a0, (9 * LONGSIZE) + LONG_S sp, a0, (10 * LONGSIZE) + LONG_S ra, a0, (11 * LONGSIZE) + + move a0, zero + ret +ENDPROC(setjmp) +.popsection + +.pushsection .text.longjmp, "ax" +ENTRY(longjmp) + LONG_L s0, a0, 0 + LONG_L s1, a0, (1 * LONGSIZE) + LONG_L s2, a0, (2 * LONGSIZE) + LONG_L s3, a0, (3 * LONGSIZE) + LONG_L s4, a0, (4 * LONGSIZE) + LONG_L s5, a0, (5 * LONGSIZE) + LONG_L s6, a0, (6 * LONGSIZE) + LONG_L s7, a0, (7 * LONGSIZE) + LONG_L s8, a0, (8 * LONGSIZE) + LONG_L fp, a0, (9 * LONGSIZE) + LONG_L sp, a0, (10 * LONGSIZE) + LONG_L ra, a0, (11 * LONGSIZE) + + /* Move the return value in place, but return 1 if passed 0. */ + li.w a0, 1 + beqz a1, 1f + move a0, a1 +1: + jr ra +ENDPROC(longjmp) +.popsection