This patch adds U-Boot API support (used by FreeBSD loader) for MIPS platforms.
Signed-off-by: Stanislav Galabov sgalabov@gmail.com
--- api/Makefile | 1 + api/api_platform-mips.c | 32 ++++++++++++++++++++++++++++++++ examples/api/Makefile | 3 +++ examples/api/crt0.S | 24 ++++++++++++++++++++++++ 4 files changed, 60 insertions(+) create mode 100644 api/api_platform-mips.c
diff --git a/api/Makefile b/api/Makefile index 3c095ee..14b7608 100644 --- a/api/Makefile +++ b/api/Makefile @@ -7,3 +7,4 @@ obj-y += api.o api_display.o api_net.o api_storage.o obj-$(CONFIG_ARM) += api_platform-arm.o obj-$(CONFIG_PPC) += api_platform-powerpc.o +obj-$(CONFIG_MIPS) += api_platform-mips.o diff --git a/api/api_platform-mips.c b/api/api_platform-mips.c new file mode 100644 index 0000000..a75b0f6 --- /dev/null +++ b/api/api_platform-mips.c @@ -0,0 +1,32 @@ +/* + * (C) Copyright 2007 Stanislav Galabov sgalabov@gmail.com + * + * SPDX-License-Identifier: GPL-2.0+ + * + * This file contains routines that fetch data from bd_info sources + */ + +#include <config.h> +#include <linux/types.h> +#include <api_public.h> + +#include <asm/u-boot.h> +#include <asm/global_data.h> + +#include "api_private.h" + +DECLARE_GLOBAL_DATA_PTR; + +/* + * Important notice: handling of individual fields MUST be kept in sync with + * include/asm-generic/u-boot.h, so any changes + * need to reflect their current state and layout of structures involved! + */ +int platform_sys_info(struct sys_info *si) +{ + + platform_set_mr(si, gd->bd->bi_memstart, + gd->bd->bi_memsize, MR_ATTR_DRAM); + + return 1; +} diff --git a/examples/api/Makefile b/examples/api/Makefile index 6cf23d1..4e9b8ea 100644 --- a/examples/api/Makefile +++ b/examples/api/Makefile @@ -10,6 +10,9 @@ endif ifeq ($(ARCH),arm) LOAD_ADDR = 0x1000000 endif +ifeq ($(ARCH),mips) +LOAD_ADDR = 0x80200000 +endif
# Resulting ELF and binary exectuables will be named demo and demo.bin extra-y = demo diff --git a/examples/api/crt0.S b/examples/api/crt0.S index 78d35a2..ced2c82 100644 --- a/examples/api/crt0.S +++ b/examples/api/crt0.S @@ -40,6 +40,30 @@ syscall: ldr ip, =syscall_ptr ldr pc, [ip]
+#elif defined(CONFIG_MIPS) + .text + .globl __start + .ent __start +__start: + sw $sp, search_hint + b main + .end __start + + .globl syscall + .ent syscall +syscall: + sw $ra, return_addr + lw $t9, syscall_ptr + jalr $t9 + nop + lw $ra, return_addr + jr $ra + nop + .end syscall + +return_addr: + .align 4 + .long 0 #else #error No support for this arch! #endif