summaryrefslogtreecommitdiffstats
path: root/board/esd/pci405/flash.c
blob: 113111d3a65fdd2deeabe8805f4be9991101cde4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
/*
 * (C) Copyright 2001
 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <asm/ppc4xx.h>
#include <asm/processor.h>

/*
 * include common flash code (for esd boards)
 */
#include "../common/flash.c"

/*-----------------------------------------------------------------------
 * Functions
 */
static ulong flash_get_size (vu_long * addr, flash_info_t * info);
static void flash_get_offsets (ulong base, flash_info_t * info);

/*-----------------------------------------------------------------------
 */

unsigned long flash_init (void)
{
	unsigned long size_b0;
	int i;
	uint pbcr;
	unsigned long base_b0;
	int size_val = 0;

	/* Init: no FLASHes known */
	for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
		flash_info[i].flash_id = FLASH_UNKNOWN;
	}

	/* Static FLASH Bank configuration here - FIXME XXX */

	size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);

	if (flash_info[0].flash_id == FLASH_UNKNOWN) {
		printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
			size_b0, size_b0<<20);
	}

	/* Setup offsets */
	flash_get_offsets (-size_b0, &flash_info[0]);

	/* Re-do sizing to get full correct info */
	mtdcr(EBC0_CFGADDR, PB0CR);
	pbcr = mfdcr(EBC0_CFGDATA);
	mtdcr(EBC0_CFGADDR, PB0CR);
	base_b0 = -size_b0;
	switch (size_b0) {
	case 1 << 20:
		size_val = 0;
		break;
	case 2 << 20:
		size_val = 1;
		break;
	case 4 << 20:
		size_val = 2;
		break;
	case 8 << 20:
		size_val = 3;
		break;
	case 16 << 20:
		size_val = 4;
		break;
	}
	pbcr = (pbcr & 0x0001ffff) | base_b0 | (size_val << 17);
	mtdcr(EBC0_CFGDATA, pbcr);

	/* Monitor protection ON by default */
	(void)flash_protect(FLAG_PROTECT_SET,
			    -monitor_flash_len,
			    0xffffffff,
			    &flash_info[0]);

	flash_info[0].size = size_b0;

	return (size_b0);
}
OpenPOWER on IntegriCloud