diff options
| author | wdenk <wdenk> | 2003-11-07 13:42:26 +0000 |
|---|---|---|
| committer | wdenk <wdenk> | 2003-11-07 13:42:26 +0000 |
| commit | 5cf9da4821db0b6d86d8bbb74af86a0303063201 (patch) | |
| tree | 7173b1bb9eb0611765921aee5312a7c4d9ac67ad /cpu | |
| parent | b13fb01a62708492cae4b33c4d6fa9ae127905f4 (diff) | |
| download | u-boot-imx-5cf9da4821db0b6d86d8bbb74af86a0303063201.zip u-boot-imx-5cf9da4821db0b6d86d8bbb74af86a0303063201.tar.gz u-boot-imx-5cf9da4821db0b6d86d8bbb74af86a0303063201.tar.bz2 | |
* Patch by Bernhard Kuhn, 28 Oct 2003:
Add low boot support for MPC5200
* Fix problem with dual PCMCIA support (NSCU)
* Fix MPC5200 I2C initialization function
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/mpc5xxx/i2c.c | 12 | ||||
| -rw-r--r-- | cpu/mpc5xxx/start.S | 41 |
2 files changed, 50 insertions, 3 deletions
diff --git a/cpu/mpc5xxx/i2c.c b/cpu/mpc5xxx/i2c.c index ea37fb0..75c7739 100644 --- a/cpu/mpc5xxx/i2c.c +++ b/cpu/mpc5xxx/i2c.c @@ -229,9 +229,10 @@ static int mpc_get_fdr(int speed) { DECLARE_GLOBAL_DATA_PTR; static int fdr = -1; - static int best_speed = 0; if (fdr == -1) { + ulong best_speed = 0; + ulong divider; ulong ipb, scl; ulong bestmatch = 0xffffffffUL; int best_i = 0, best_j = 0, i, j; @@ -262,8 +263,13 @@ static int mpc_get_fdr(int speed) } } } - fdr = (best_i & 3) | ((best_i & 4) << 3) | (best_j << 2); - printf("%d kHz, ", best_speed / 1000); + divider = (best_i & 3) | ((best_i & 4) << 3) | (best_j << 2); + if (gd->flags & GD_FLG_RELOC) { + fdr = divider; + } else { + printf("%ld kHz, ", best_speed / 1000); + return divider; + } } return fdr; diff --git a/cpu/mpc5xxx/start.S b/cpu/mpc5xxx/start.S index 0557909..e0873ed 100644 --- a/cpu/mpc5xxx/start.S +++ b/cpu/mpc5xxx/start.S @@ -103,6 +103,47 @@ boot_cold: boot_warm: mfmsr r5 /* save msr contents */ +#if defined(CFG_LOWBOOT) + lis r4, CFG_DEFAULT_MBAR@h + lis r3, 0x0000FF00@h + ori r3, r3, 0x0000FF00@l + stw r3, 0x4(r4) + lis r3, 0x0000FFFF@h + ori r3, r3, 0x0000FFFF@l + stw r3, 0x8(r4) + lis r3, 0x00047800@h + ori r3, r3, 0x00047800@l + stw r3, 0x300(r4) + lis r3, 0x02010000@h + ori r3, r3, 0x02010000@l + stw r3, 0x54(r4) + +#if defined(CFG_LOWBOOT08) + lis r3, 0xff800160@h + ori r3, r3, 0xff800160@l +#endif +#if defined(CFG_LOWBOOT16) + lis r3, 0xff000160@h + ori r3, r3, 0xff000160@l +#endif + mtlr r3 + blr +lowboot_reentry: /* FLASH_BASE + 0x160 */ + + lis r3, 0x0000FF00@h + ori r3, r3, 0x0000FF00@l + stw r3, 0x4c(r4) + lis r3, 0x0000FFFF@h + ori r3, r3, 0x0000FFFF@l + stw r3, 0x50(r4) + lis r3, 0x00047800@h + ori r3, r3, 0x00047800@l + stw r3, 0x300(r4) + lis r3, 0x02000001@h + ori r3, r3, 0x02000001@l + stw r3, 0x54(r4) +#endif /* CFG_LOWBOOT */ + #if defined(CFG_DEFAULT_MBAR) && !defined(CFG_RAMBOOT) lis r3, CFG_MBAR@h ori r3, r3, CFG_MBAR@l |