projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| b318262a SR |
1 | /* |
| 2 | * (C) Copyright 2001 | |
| 3 | * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com | |
| 4 | * | |
| 1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
| b318262a SR |
6 | */ |
| 7 | ||
| 8 | #include <common.h> | |
| b36df561 | 9 | #include <asm/ppc4xx.h> |
| b318262a SR |
10 | #include <asm/processor.h> |
| 11 | ||
| 12 | /* | |
| 13 | * include common flash code (for esd boards) | |
| 14 | */ | |
| 15 | #include "../common/flash.c" | |
| 16 | ||
| 17 | /*----------------------------------------------------------------------- | |
| 18 | * Functions | |
| 19 | */ | |
| 20 | static ulong flash_get_size (vu_long * addr, flash_info_t * info); | |
| 21 | static void flash_get_offsets (ulong base, flash_info_t * info); | |
| 22 | ||
| 23 | /*----------------------------------------------------------------------- | |
| 24 | */ | |
| 25 | ||
| 26 | unsigned long flash_init (void) | |
| 27 | { | |
| 28 | unsigned long size_b0; | |
| 29 | int i; | |
| 30 | uint pbcr; | |
| 31 | unsigned long base_b0; | |
| 32 | int size_val = 0; | |
| 33 | ||
| 34 | /* Init: no FLASHes known */ | |
| 6d0f6bcf | 35 | for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
| b318262a SR |
36 | flash_info[i].flash_id = FLASH_UNKNOWN; |
| 37 | } | |
| 38 | ||
| 39 | /* Static FLASH Bank configuration here - FIXME XXX */ | |
| 40 | ||
| 41 | size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); | |
| 42 | ||
| 43 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
| 44 | printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
| 45 | size_b0, size_b0<<20); | |
| 46 | } | |
| 47 | ||
| 48 | /* Setup offsets */ | |
| 49 | flash_get_offsets (-size_b0, &flash_info[0]); | |
| 50 | ||
| 51 | /* Re-do sizing to get full correct info */ | |
| d1c3b275 SR |
52 | mtdcr(EBC0_CFGADDR, PB0CR); |
| 53 | pbcr = mfdcr(EBC0_CFGDATA); | |
| 54 | mtdcr(EBC0_CFGADDR, PB0CR); | |
| b318262a SR |
55 | base_b0 = -size_b0; |
| 56 | switch (size_b0) { | |
| 57 | case 1 << 20: | |
| 58 | size_val = 0; | |
| 59 | break; | |
| 60 | case 2 << 20: | |
| 61 | size_val = 1; | |
| 62 | break; | |
| 63 | case 4 << 20: | |
| 64 | size_val = 2; | |
| 65 | break; | |
| 66 | case 8 << 20: | |
| 67 | size_val = 3; | |
| 68 | break; | |
| 69 | case 16 << 20: | |
| 70 | size_val = 4; | |
| 71 | break; | |
| 72 | } | |
| 73 | pbcr = (pbcr & 0x0001ffff) | base_b0 | (size_val << 17); | |
| d1c3b275 | 74 | mtdcr(EBC0_CFGDATA, pbcr); |
| b318262a SR |
75 | |
| 76 | /* Monitor protection ON by default */ | |
| 77 | (void)flash_protect(FLAG_PROTECT_SET, | |
| 6d0f6bcf | 78 | -CONFIG_SYS_MONITOR_LEN, |
| b318262a SR |
79 | 0xffffffff, |
| 80 | &flash_info[0]); | |
| 81 | ||
| 82 | flash_info[0].size = size_b0; | |
| 83 | ||
| 84 | return (size_b0); | |
| 85 | } |