2 * (C) Copyright 2004-2005
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
6 * Add support for Am29F016D and dynamic switch setting.
8 * SPDX-License-Identifier: GPL-2.0+
13 * Wait for completion of each sector erase command issued
15 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
19 #include <asm/ppc4xx.h>
20 #include <asm/processor.h>
25 #define DEBUGF(x...) printf(x)
30 #define BOOT_SMALL_FLASH 0x40 /* 01000000 */
31 #define FLASH_ONBD_N 2 /* 00000010 */
32 #define FLASH_SRAM_SEL 1 /* 00000001 */
33 #define FLASH_ONBD_N 2 /* 00000010 */
34 #define FLASH_SRAM_SEL 1 /* 00000001 */
36 #define BOOT_SMALL_FLASH_VAL 4
37 #define FLASH_ONBD_N_VAL 2
38 #define FLASH_SRAM_SEL_VAL 1
40 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
42 static unsigned long flash_addr_table[8][CONFIG_SYS_MAX_FLASH_BANKS] = {
43 {0xFF800000, 0xFF880000, 0xFFC00000}, /* 0:000: configuraton 4 */
44 {0xFF900000, 0xFF980000, 0xFFC00000}, /* 1:001: configuraton 3 */
45 {0x00000000, 0x00000000, 0x00000000}, /* 2:010: configuraton 8 */
46 {0x00000000, 0x00000000, 0x00000000}, /* 3:011: configuraton 7 */
47 {0xFFE00000, 0xFFF00000, 0xFF800000}, /* 4:100: configuraton 2 */
48 {0xFFF00000, 0xFFF80000, 0xFF800000}, /* 5:101: configuraton 1 */
49 {0x00000000, 0x00000000, 0x00000000}, /* 6:110: configuraton 6 */
50 {0x00000000, 0x00000000, 0x00000000} /* 7:111: configuraton 5 */
54 * include common flash code (for amcc boards)
56 #include "../common/flash.c"
58 /*-----------------------------------------------------------------------
61 static ulong flash_get_size(vu_long * addr, flash_info_t * info);
62 static int write_word(flash_info_t * info, ulong dest, ulong data);
64 /*-----------------------------------------------------------------------
67 unsigned long flash_init(void)
69 unsigned long total_b = 0;
70 unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
71 unsigned char *fpga_base = (unsigned char *)CONFIG_SYS_FPGA_BASE;
72 unsigned char switch_status;
73 unsigned short index = 0;
76 /* read FPGA base register FPGA_REG0 */
77 switch_status = *fpga_base;
79 /* check the bitmap of switch status */
80 if (switch_status & BOOT_SMALL_FLASH) {
81 index += BOOT_SMALL_FLASH_VAL;
83 if (switch_status & FLASH_ONBD_N) {
84 index += FLASH_ONBD_N_VAL;
86 if (switch_status & FLASH_SRAM_SEL) {
87 index += FLASH_SRAM_SEL_VAL;
91 DEBUGF("FLASH: Index: %d\n", index);
93 /* Init: no FLASHes known */
94 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
95 flash_info[i].flash_id = FLASH_UNKNOWN;
96 flash_info[i].sector_count = -1;
97 flash_info[i].size = 0;
99 /* check whether the address is 0 */
100 if (flash_addr_table[index][i] == 0) {
104 /* call flash_get_size() to initialize sector address */
106 flash_get_size((vu_long *) flash_addr_table[index][i],
108 flash_info[i].size = size_b[i];
109 if (flash_info[i].flash_id == FLASH_UNKNOWN) {
111 ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
112 i, size_b[i], size_b[i] << 20);
113 flash_info[i].sector_count = -1;
114 flash_info[i].size = 0;
117 /* Monitor protection ON by default */
118 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
119 CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
121 #ifdef CONFIG_ENV_IS_IN_FLASH
122 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
123 CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
125 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
126 CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
130 total_b += flash_info[i].size;