diff options
Diffstat (limited to 'utils')
| -rw-r--r-- | utils/hwstub/stub/stmp/crt0.S | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/utils/hwstub/stub/stmp/crt0.S b/utils/hwstub/stub/stmp/crt0.S index f4a0c28..38b6f18 100644 --- a/utils/hwstub/stub/stmp/crt0.S +++ b/utils/hwstub/stub/stmp/crt0.S @@ -5,12 +5,10 @@ start: sub r7, pc, #8 /* Copy running address */ msr cpsr_c, #0xd3 /* enter supervisor mode, disable IRQ/FIQ */ - /* Disable MMU, disable caching and buffering; - * use low exception range address */ - mrc p15, 0, r0, c1, c0, 0 - ldr r1, =0x3005 - bic r0, r1 - mcr p15, 0, r0, c1, c0, 0 + /* The stub could be located at a virtual address so killing the MMU at + * this point would be mere suicide. We assume that the remap location + * is identically mapped and kill the MMU after the copy */ + /* Relocate to right address */ mov r2, r7 ldr r3, =_copystart @@ -25,6 +23,12 @@ start: /* Jump to real location */ ldr pc, =remap remap: + /* Disable MMU, disable caching and buffering; + * use low exception range address */ + mrc p15, 0, r0, c1, c0, 0 + ldr r1, =0x3005 + bic r0, r1 + mcr p15, 0, r0, c1, c0, 0 /* clear bss */ ldr r2, =bss_start ldr r3, =bss_end |