1 /*
2 * (C) Copyright 2001
3 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8 #include <common.h>
9 #include <asm/ppc4xx.h>
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
flash_init(void)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 */
35 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
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 */
52 mtdcr(EBC0_CFGADDR, PB0CR);
53 pbcr = mfdcr(EBC0_CFGDATA);
54 mtdcr(EBC0_CFGADDR, PB0CR);
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);
74 mtdcr(EBC0_CFGDATA, pbcr);
75
76 /* Monitor protection ON by default */
77 (void)flash_protect(FLAG_PROTECT_SET,
78 -CONFIG_SYS_MONITOR_LEN,
79 0xffffffff,
80 &flash_info[0]);
81
82 flash_info[0].size = size_b0;
83
84 return (size_b0);
85 }
86