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authorStanislav Galabov <sgalabov@gmail.com>2016-02-04 12:13:44 +0200
committerTom Rini <trini@konsulko.com>2016-02-08 10:22:38 -0500
commit7c60423106bebafedbdd9879d84d105b3fb03930 (patch)
tree27256ceb56018f69c1c91807eb54a7978ce3a2e8
parente4c1b4d8c1a8d92454f624ffd509057d9bd6ef36 (diff)
downloadtalos-obmc-uboot-7c60423106bebafedbdd9879d84d105b3fb03930.tar.gz
talos-obmc-uboot-7c60423106bebafedbdd9879d84d105b3fb03930.zip
api: Add FreeBSD API support for MIPS platforms
This patch adds U-Boot API support (used by FreeBSD loader) for MIPS platforms. Signed-off-by: Stanislav Galabov <sgalabov@gmail.com>
-rw-r--r--api/Makefile1
-rw-r--r--api/api_platform-mips.c32
-rw-r--r--examples/api/Makefile3
-rw-r--r--examples/api/crt0.S24
4 files changed, 60 insertions, 0 deletions
diff --git a/api/Makefile b/api/Makefile
index 3c095eedb6..14b7608596 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-$(CONFIG_MIPS) += api_platform-mips.o
diff --git a/api/api_platform-mips.c b/api/api_platform-mips.c
new file mode 100644
index 0000000000..a75b0f6195
--- /dev/null
+++ b/api/api_platform-mips.c
@@ -0,0 +1,32 @@
+/*
+ * (C) Copyright 2007 Stanislav Galabov <sgalabov@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * This file contains routines that fetch data from bd_info sources
+ */
+
+#include <config.h>
+#include <linux/types.h>
+#include <api_public.h>
+
+#include <asm/u-boot.h>
+#include <asm/global_data.h>
+
+#include "api_private.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Important notice: handling of individual fields MUST be kept in sync with
+ * include/asm-generic/u-boot.h, so any changes
+ * need to reflect their current state and layout of structures involved!
+ */
+int platform_sys_info(struct sys_info *si)
+{
+
+ platform_set_mr(si, gd->bd->bi_memstart,
+ gd->bd->bi_memsize, MR_ATTR_DRAM);
+
+ return 1;
+}
diff --git a/examples/api/Makefile b/examples/api/Makefile
index 6cf23d10ac..4e9b8ea17d 100644
--- a/examples/api/Makefile
+++ b/examples/api/Makefile
@@ -10,6 +10,9 @@ endif
ifeq ($(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 78d35a2893..ced2c82e5f 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
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