source:
trunk/loader/a495/entry.S
@
1198
| Revision 1198, 377 bytes checked in by msl, 2 years ago (diff) |
|---|
| Rev | Line | |
|---|---|---|
| [1198] | 1 | .section .entry |
| 2 | ||
| 3 | // ROM:FFFF1070, Turn OFF SD Card power | |
| 4 | // to support autostart | |
| 5 | LDR R3, =0xC022007C | |
| 6 | MOV R2, #0x44 | |
| 7 | STR R2, [R3] | |
| 8 | ||
| 9 | // looks like idle cycle is required for proper shutdown | |
| 10 | MOV R3, #0x8000 | |
| 11 | 1: | |
| 12 | SUB R3, R3, #1 | |
| 13 | CMP R3, #0 | |
| 14 | BNE 1b | |
| 15 | ||
| 16 | // ordinary startup... | |
| 17 | MOV SP, #0x1900 | |
| 18 | MOV R11, #0 | |
| 19 | B my_restart |
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