[U-Boot] [PATCH 1/2] MIPS: add support for CONFIG_SYS_INIT_SP_ADDR

[Daniel Schwierzeck]

Support the existing config option CONFIG_SYS_INIT_SP_ADDR on
MIPS. This allows to move the initial stack to other places
than the beginning of RAM.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck at gmail.com>
---

 arch/mips/cpu/mips32/start.S | 7 ++++++-
 arch/mips/cpu/mips64/start.S | 7 ++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/arch/mips/cpu/mips32/start.S b/arch/mips/cpu/mips32/start.S
index 384ea26..5946859 100644
--- a/arch/mips/cpu/mips32/start.S
+++ b/arch/mips/cpu/mips32/start.S
@@ -15,6 +15,11 @@
 #define CONFIG_SYS_MIPS_CACHE_MODE CONF_CM_CACHABLE_NONCOHERENT
 #endif
 
+#ifndef CONFIG_SYS_INIT_SP_ADDR
+#define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_SYS_SDRAM_BASE + \
+				CONFIG_SYS_INIT_SP_OFFSET)
+#endif
+
 	/*
 	 * For the moment disable interrupts, mark the kernel mode and
 	 * set ST0_KX so that the CPU does not spit fire when using
@@ -135,7 +140,7 @@ reset:
 #endif
 
 	/* Set up temporary stack */
-	li	sp, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET
+	li	sp, CONFIG_SYS_INIT_SP_ADDR
 	move	fp, sp
 
 	la	t9, board_init_f
diff --git a/arch/mips/cpu/mips64/start.S b/arch/mips/cpu/mips64/start.S
index 6ff714e..81df923 100644
--- a/arch/mips/cpu/mips64/start.S
+++ b/arch/mips/cpu/mips64/start.S
@@ -15,6 +15,11 @@
 #define CONFIG_SYS_MIPS_CACHE_MODE CONF_CM_CACHABLE_NONCOHERENT
 #endif
 
+#ifndef CONFIG_SYS_INIT_SP_ADDR
+#define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_SYS_SDRAM_BASE + \
+				CONFIG_SYS_INIT_SP_OFFSET)
+#endif
+
 #ifdef CONFIG_SYS_LITTLE_ENDIAN
 #define MIPS64_R_INFO(ssym, r_type3, r_type2, r_type) \
 	(((r_type) << 24) | ((r_type2) << 16) | ((r_type3) << 8) | (ssym))
@@ -129,7 +134,7 @@ reset:
 #endif
 
 	/* Set up temporary stack */
-	dli	sp, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET
+	dli	sp, CONFIG_SYS_INIT_SP_ADDR
 	move	fp, sp
 
 	dla	t9, board_init_f
-- 
2.1.0