[U-Boot] [PATCH] powerpc/85xx: Move INIT_RAM_ADDR physical address to 36-bit space
Kumar Gala
galak at kernel.crashing.org
Wed Jul 14 17:14:54 CEST 2010
From: york <yorksun at freescale.com>
If 36-bit physical address is used, move the INIT_RAM_ADDR to higher
address. This frees the low 4GB address space for better use.
Signed-off-by: York Sun <yorksun at freescale.com>
---
arch/powerpc/cpu/mpc85xx/start.S | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/cpu/mpc85xx/start.S b/arch/powerpc/cpu/mpc85xx/start.S
index b3cb56a..aaf7838 100644
--- a/arch/powerpc/cpu/mpc85xx/start.S
+++ b/arch/powerpc/cpu/mpc85xx/start.S
@@ -330,8 +330,15 @@ _start_e500:
lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@h
ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@l
+#if defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW) && defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH)
+ lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
+ ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
+ li r10,CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH
+ mtspr MAS7,r10
+#else
lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
+#endif
mtspr MAS0,r6
mtspr MAS1,r7
--
1.6.0.6
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