From 7c60423106bebafedbdd9879d84d105b3fb03930 Mon Sep 17 00:00:00 2001
From: Stanislav Galabov <sgalabov@gmail.com>
Date: Thu, 4 Feb 2016 12:13:44 +0200
Subject: [PATCH] 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>
---
 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 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