ppc4xx: Add Canyonlands NAND booting support

[kernel/u-boot.git] / cpu / ppc4xx / start.S

diff --git a/cpu/ppc4xx/start.S b/cpu/ppc4xx/start.S
index cdfc943..8d2777d 100644 (file)
--- a/cpu/ppc4xx/start.S
+++ b/cpu/ppc4xx/start.S
@@ -403,7 +403,8 @@ rsttlb:     tlbwe   r0,r1,0x0000    /* Invalidate all entries (V=0)*/
 2:
 
 #if defined(CONFIG_NAND_SPL)
-#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
+    defined(CONFIG_460EX) || defined(CONFIG_460GT)
        /*
         * Enable internal SRAM (only on 440EPx/GRx, 440EP/GR have no OCM)
         */
@@ -415,6 +416,11 @@ rsttlb:    tlbwe   r0,r1,0x0000    /* Invalidate all entries (V=0)*/
        mfdcr   r1,isram0_pmeg
        and     r1,r1,r2                /* Disable pwr mgmt */
        mtdcr   isram0_pmeg,r1
+#if defined(CONFIG_460EX) || defined(CONFIG_460GT)
+       lis     r1,0x4000               /* BAS = 8000_0000 */
+       ori     r1,r1,0x4580            /* 16k */
+       mtdcr   isram0_sb0cr,r1
+#endif
 #endif
 #if defined(CONFIG_440EP)
        /*