omap4: automatic sdram detection

[u-boot] / arch / arm / cpu / armv7 / omap4 / lowlevel_init.S

diff --git a/arch/arm/cpu/armv7/omap4/lowlevel_init.S b/arch/arm/cpu/armv7/omap4/lowlevel_init.S
index 9a181eba9ce2d3e4fbd736a6f5463dcde66da84c..6abfbbaa13115362b189595030d14e2bd98d98bb 100644 (file)
--- a/arch/arm/cpu/armv7/omap4/lowlevel_init.S
+++ b/arch/arm/cpu/armv7/omap4/lowlevel_init.S
@@ -46,3 +46,11 @@ lowlevel_init:
        bl      s_init
        pop     {ip, pc}
 
+.globl set_pl310_ctrl_reg
+set_pl310_ctrl_reg:
+       PUSH    {r4-r11, lr}    @ save registers - ROM code may pollute
+                               @ our registers
+       LDR     r12, =0x102     @ Set PL310 control register - value in R0
+       .word   0xe1600070      @ SMC #0 - hand assembled because -march=armv5
+                               @ call ROM Code API to set control register
+       POP     {r4-r11, pc}