85xx: Add support for additional e500mc features

[oweals/u-boot.git] / cpu / mpc85xx / start.S

diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S
index 8fa0ff7a8a591148e81069ce67ccb748ec38c1a2..89eea8cbe80673747dd7d49cd2fb85556291a206 100644 (file)
--- a/cpu/mpc85xx/start.S
+++ b/cpu/mpc85xx/start.S
@@ -161,7 +161,9 @@ _start_e500:
 #if defined(CONFIG_ENABLE_36BIT_PHYS)
        ori     r0,r0,HID0_ENMAS7@l     /* Enable MAS7 */
 #endif
+#ifndef CONFIG_E500MC
        ori     r0,r0,HID0_TBEN@l       /* Enable Timebase */
+#endif
        mtspr   HID0,r0
 
 #ifndef CONFIG_E500MC
@@ -184,19 +186,19 @@ _start_e500:
        mtspr   DBCR0,r0
 #endif
 
-       /* create a temp mapping in AS=1 to the boot window */
+       /* create a temp mapping in AS=1 to the 4M boot window */
        lis     r6,FSL_BOOKE_MAS0(1, 15, 0)@h
        ori     r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l
 
-       lis     r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_16M)@h
-       ori     r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_16M)@l
+       lis     r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_4M)@h
+       ori     r7,r7,FSL_BOOKE_MAS1(1, 1, 0, 1, BOOKE_PAGESZ_4M)@l
 
-       /* Align the mapping to 16MB */
-       lis     r8,FSL_BOOKE_MAS2(TEXT_BASE & 0xff000000, (MAS2_I|MAS2_G))@h
-       ori     r8,r8,FSL_BOOKE_MAS2(TEXT_BASE & 0xff000000, (MAS2_I|MAS2_G))@l
+       lis     r8,FSL_BOOKE_MAS2(TEXT_BASE & 0xffc00000, (MAS2_I|MAS2_G))@h
+       ori     r8,r8,FSL_BOOKE_MAS2(TEXT_BASE & 0xffc00000, (MAS2_I|MAS2_G))@l
 
-       lis     r9,FSL_BOOKE_MAS3(0xff000000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
-       ori     r9,r9,FSL_BOOKE_MAS3(0xff000000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
+       /* The 85xx has the default boot window 0xff800000 - 0xffffffff */
+       lis     r9,FSL_BOOKE_MAS3(0xffc00000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
+       ori     r9,r9,FSL_BOOKE_MAS3(0xffc00000, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
 
        mtspr   MAS0,r6
        mtspr   MAS1,r7