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https://github.com/brain-hackers/u-boot-brain
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![wdenk](/assets/img/avatar_default.png)
Add support for OMAP730 Perseus2 Development board * Patch by Alan J. Luse, 29 Apr 2004: Fix flash chip-select (OR0) option register setting on FADS boards. * Patch by Alan J. Luse, 29 Apr 2004: Report MII network speed and duplex setting properly when auto-negotiate is not enabled. * Patch by Jarrett Redd, 29 Apr 2004: Fix hang on reset on Ocotea board due to flash in wrong mode.
600 lines
15 KiB
C
600 lines
15 KiB
C
/*
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* (C) Copyright 2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
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* Add support for Am29F016D and dynamic switch setting.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Modified 4/5/2001
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* Wait for completion of each sector erase command issued
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* 4/5/2001
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* Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
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*/
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#include <common.h>
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#include <ppc4xx.h>
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#include <asm/processor.h>
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#undef DEBUG
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#ifdef DEBUG
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#define DEBUGF(x...) printf(x)
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#else
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#define DEBUGF(x...)
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#endif /* DEBUG */
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#define BOOT_SMALL_FLASH 32 /* 00100000 */
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#define FLASH_ONBD_N 2 /* 00000010 */
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#define FLASH_SRAM_SEL 1 /* 00000001 */
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#define BOOT_SMALL_FLASH_VAL 4
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#define FLASH_ONBD_N_VAL 2
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#define FLASH_SRAM_SEL_VAL 1
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flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
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static unsigned long flash_addr_table[8][CFG_MAX_FLASH_BANKS] = {
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{0xFF800000, 0xFF900000, 0xFFC00000}, /* 0:000: configuraton 4 */
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{0xFF900000, 0xFF800000, 0xFFC00000}, /* 1:001: configuraton 3 */
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{0x00000000, 0x00000000, 0x00000000}, /* 2:010: configuraton 8 */
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{0x00000000, 0x00000000, 0x00000000}, /* 3:011: configuraton 7 */
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{0xFFE00000, 0xFFF00000, 0xFF800000}, /* 4:100: configuraton 2 */
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{0xFFF00000, 0xFFF80000, 0xFF800000}, /* 5:101: configuraton 1 */
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{0x00000000, 0x00000000, 0x00000000}, /* 6:110: configuraton 6 */
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{0x00000000, 0x00000000, 0x00000000} /* 7:111: configuraton 5 */
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};
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/*-----------------------------------------------------------------------
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* Functions
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*/
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static ulong flash_get_size(vu_long * addr, flash_info_t * info);
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static int write_word(flash_info_t * info, ulong dest, ulong data);
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#ifdef CONFIG_OCOTEA
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#define ADDR0 0x5555
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#define ADDR1 0x2aaa
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#define FLASH_WORD_SIZE unsigned char
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#endif
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/*-----------------------------------------------------------------------
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*/
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unsigned long flash_init(void)
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{
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unsigned long total_b = 0;
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unsigned long size_b[CFG_MAX_FLASH_BANKS];
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unsigned char *fpga_base = (unsigned char *) CFG_FPGA_BASE;
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unsigned char switch_status;
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unsigned short index = 0;
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int i;
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/* read FPGA base register FPGA_REG0 */
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switch_status = *fpga_base;
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/* check the bitmap of switch status */
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if (switch_status & BOOT_SMALL_FLASH) {
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index += BOOT_SMALL_FLASH_VAL;
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}
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if (switch_status & FLASH_ONBD_N) {
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index += FLASH_ONBD_N_VAL;
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}
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if (switch_status & FLASH_SRAM_SEL) {
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index += FLASH_SRAM_SEL_VAL;
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}
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DEBUGF("\n");
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DEBUGF("FLASH: Index: %d\n", index);
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/* Init: no FLASHes known */
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for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
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flash_info[i].flash_id = FLASH_UNKNOWN;
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flash_info[i].sector_count = -1;
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flash_info[i].size = 0;
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/* check whether the address is 0 */
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if (flash_addr_table[index][i] == 0) {
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continue;
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}
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/* call flash_get_size() to initialize sector address */
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size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i], &flash_info[i]);
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flash_info[i].size = size_b[i];
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if (flash_info[i].flash_id == FLASH_UNKNOWN) {
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printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
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i, size_b[i], size_b[i] << 20);
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flash_info[i].sector_count = -1;
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flash_info[i].size = 0;
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}
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total_b += flash_info[i].size;
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}
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return total_b;
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}
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/*-----------------------------------------------------------------------
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*/
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void flash_print_info(flash_info_t * info)
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{
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int i;
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int k;
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int size;
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int erased;
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volatile unsigned long *flash;
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if (info->flash_id == FLASH_UNKNOWN) {
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printf("missing or unknown FLASH type\n");
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return;
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}
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switch (info->flash_id & FLASH_VENDMASK) {
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case FLASH_MAN_AMD:
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printf("AMD ");
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break;
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case FLASH_MAN_FUJ:
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printf("FUJITSU ");
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break;
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case FLASH_MAN_SST:
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printf("SST ");
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break;
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default:
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printf("Unknown Vendor ");
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break;
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}
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switch (info->flash_id & FLASH_TYPEMASK) {
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case FLASH_AM040:
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printf("AM29F040 (512 Kbit, uniform sector size)\n");
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break;
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case FLASH_AM400B:
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printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM400T:
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printf("AM29LV400T (4 Mbit, top boot sector)\n");
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break;
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case FLASH_AM800B:
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printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM800T:
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printf("AM29LV800T (8 Mbit, top boot sector)\n");
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break;
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case FLASH_AM160B:
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printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM160T:
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printf("AM29LV160T (16 Mbit, top boot sector)\n");
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break;
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case FLASH_AM320B:
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printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM320T:
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printf("AM29LV320T (32 Mbit, top boot sector)\n");
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break;
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case FLASH_AMDLV033C:
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printf("AM29LV033C (32 Mbit, top boot sector)\n");
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break;
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case FLASH_SST800A:
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printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
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break;
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case FLASH_SST160A:
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printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
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break;
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default:
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printf("Unknown Chip Type\n");
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break;
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}
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printf(" Size: %ld KB in %d Sectors\n",
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info->size >> 10, info->sector_count);
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printf(" Sector Start Addresses:");
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for (i = 0; i < info->sector_count; ++i) {
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/*
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* Check if whole sector is erased
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*/
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if (i != (info->sector_count - 1))
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size = info->start[i + 1] - info->start[i];
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else
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size = info->start[0] + info->size - info->start[i];
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erased = 1;
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flash = (volatile unsigned long *) info->start[i];
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size = size >> 2; /* divide by 4 for longword access */
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for (k = 0; k < size; k++) {
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if (*flash++ != 0xffffffff) {
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erased = 0;
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break;
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}
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}
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if ((i % 5) == 0)
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printf("\n ");
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printf(" %08lX%s%s",
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info->start[i],
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erased ? " E" : " ", info->protect[i] ? "RO " : " ");
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}
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printf("\n");
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return;
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}
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/*-----------------------------------------------------------------------
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*/
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/*
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* The following code cannot be run from FLASH!
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*/
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static ulong flash_get_size(vu_long * addr, flash_info_t * info)
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{
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short i;
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FLASH_WORD_SIZE value;
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ulong base = (ulong) addr;
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volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) addr;
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DEBUGF("FLASH ADDR: %08x\n", (unsigned) addr);
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/* Write auto select command: read Manufacturer ID */
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udelay(10000);
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addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
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udelay(1000);
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addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
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udelay(1000);
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addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00900090;
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udelay(1000);
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value = addr2[0];
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DEBUGF("FLASH MANUFACT: %x\n", value);
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switch (value) {
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case (FLASH_WORD_SIZE) AMD_MANUFACT:
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info->flash_id = FLASH_MAN_AMD;
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break;
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case (FLASH_WORD_SIZE) FUJ_MANUFACT:
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info->flash_id = FLASH_MAN_FUJ;
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break;
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case (FLASH_WORD_SIZE) SST_MANUFACT:
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info->flash_id = FLASH_MAN_SST;
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break;
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case (FLASH_WORD_SIZE) STM_MANUFACT:
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info->flash_id = FLASH_MAN_STM;
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break;
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default:
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info->flash_id = FLASH_UNKNOWN;
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info->sector_count = 0;
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info->size = 0;
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return (0); /* no or unknown flash */
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}
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value = addr2[1]; /* device ID */
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DEBUGF("\nFLASH DEVICEID: %x\n", value);
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switch (value) {
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case (FLASH_WORD_SIZE) AMD_ID_LV040B:
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info->flash_id += FLASH_AM040;
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info->sector_count = 8;
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info->size = 0x0080000; /* => 512 ko */
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break;
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case (FLASH_WORD_SIZE) AMD_ID_F040B:
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info->flash_id += FLASH_AM040;
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info->sector_count = 8;
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info->size = 0x0080000; /* => 512 ko */
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break;
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case (FLASH_WORD_SIZE) AMD_ID_LV033C:
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info->flash_id += FLASH_AMDLV033C;
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info->sector_count = 64;
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info->size = 0x00400000;
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break; /* => 4 MB */
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default:
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info->flash_id = FLASH_UNKNOWN;
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return (0); /* => no or unknown flash */
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}
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/* set up sector start address table */
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if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
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(info->flash_id == FLASH_AM040) ||
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(info->flash_id == FLASH_AMD016)) {
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for (i = 0; i < info->sector_count; i++)
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info->start[i] = base + (i * 0x00010000);
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} else {
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if (info->flash_id & FLASH_BTYPE) {
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/* set sector offsets for bottom boot block type */
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info->start[0] = base + 0x00000000;
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info->start[1] = base + 0x00004000;
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info->start[2] = base + 0x00006000;
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info->start[3] = base + 0x00008000;
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for (i = 4; i < info->sector_count; i++) {
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info->start[i] = base + (i * 0x00010000) - 0x00030000;
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}
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} else {
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/* set sector offsets for top boot block type */
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i = info->sector_count - 1;
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info->start[i--] = base + info->size - 0x00004000;
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info->start[i--] = base + info->size - 0x00006000;
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info->start[i--] = base + info->size - 0x00008000;
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for (; i >= 0; i--) {
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info->start[i] = base + i * 0x00010000;
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}
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}
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}
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/* check for protected sectors */
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for (i = 0; i < info->sector_count; i++) {
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/* read sector protection at sector address, (A7 .. A0) = 0x02 */
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/* D0 = 1 if protected */
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addr2 = (volatile FLASH_WORD_SIZE *) (info->start[i]);
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if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
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info->protect[i] = 0;
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else
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info->protect[i] = addr2[2] & 1;
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}
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/* issue bank reset to return to read mode */
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addr2[0] = (FLASH_WORD_SIZE) 0x00F000F0;
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/*
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* Prevent writes to uninitialized FLASH.
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*/
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if (info->flash_id != FLASH_UNKNOWN) {
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/* ? ? ? */
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}
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return (info->size);
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}
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int wait_for_DQ7(flash_info_t * info, int sect)
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{
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ulong start, now, last;
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volatile FLASH_WORD_SIZE *addr =
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(FLASH_WORD_SIZE *) (info->start[sect]);
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start = get_timer(0);
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last = start;
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while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) !=
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(FLASH_WORD_SIZE) 0x00800080) {
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if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
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printf("Timeout\n");
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return -1;
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}
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/* show that we're waiting */
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if ((now - last) > 1000) { /* every second */
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putc('.');
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last = now;
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}
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}
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return 0;
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}
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/*-----------------------------------------------------------------------
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*/
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int flash_erase(flash_info_t * info, int s_first, int s_last)
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{
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volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]);
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volatile FLASH_WORD_SIZE *addr2;
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int flag, prot, sect, l_sect;
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int i;
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if ((s_first < 0) || (s_first > s_last)) {
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if (info->flash_id == FLASH_UNKNOWN) {
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printf("- missing\n");
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} else {
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printf("- no sectors to erase\n");
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}
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return 1;
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}
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if (info->flash_id == FLASH_UNKNOWN) {
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printf("Can't erase unknown flash type - aborted\n");
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return 1;
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}
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prot = 0;
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for (sect = s_first; sect <= s_last; ++sect) {
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if (info->protect[sect]) {
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prot++;
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}
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}
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if (prot) {
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printf("- Warning: %d protected sectors will not be erased!\n",
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prot);
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} else {
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printf("\n");
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}
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l_sect = -1;
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/* Disable interrupts which might cause a timeout here */
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flag = disable_interrupts();
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/* Start erase on unprotected sectors */
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for (sect = s_first; sect <= s_last; sect++) {
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if (info->protect[sect] == 0) { /* not protected */
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addr2 = (FLASH_WORD_SIZE *) (info->start[sect]);
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printf("Erasing sector %p\n", addr2);
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if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
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addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
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addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
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addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080;
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addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
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addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
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addr2[0] = (FLASH_WORD_SIZE) 0x00500050; /* block erase */
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for (i = 0; i < 50; i++)
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udelay(1000); /* wait 1 ms */
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} else {
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addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
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addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
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addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080;
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addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
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addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
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addr2[0] = (FLASH_WORD_SIZE) 0x00300030; /* sector erase */
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}
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l_sect = sect;
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/*
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* Wait for each sector to complete, it's more
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* reliable. According to AMD Spec, you must
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* issue all erase commands within a specified
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* timeout. This has been seen to fail, especially
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* if printf()s are included (for debug)!!
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*/
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wait_for_DQ7(info, sect);
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}
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}
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/* re-enable interrupts if necessary */
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if (flag)
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enable_interrupts();
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/* wait at least 80us - let's wait 1 ms */
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udelay(1000);
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/* reset to read mode */
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addr = (FLASH_WORD_SIZE *) info->start[0];
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addr[0] = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
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printf(" done\n");
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return 0;
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}
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/*-----------------------------------------------------------------------
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* Copy memory to flash, returns:
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* 0 - OK
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* 1 - write timeout
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* 2 - Flash not erased
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*/
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int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt)
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{
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ulong cp, wp, data;
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int i, l, rc;
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wp = (addr & ~3); /* get lower word aligned address */
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|
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/*
|
|
* handle unaligned start bytes
|
|
*/
|
|
if ((l = addr - wp) != 0) {
|
|
data = 0;
|
|
for (i = 0, cp = wp; i < l; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *) cp);
|
|
}
|
|
for (; i < 4 && cnt > 0; ++i) {
|
|
data = (data << 8) | *src++;
|
|
--cnt;
|
|
++cp;
|
|
}
|
|
for (; cnt == 0 && i < 4; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *) cp);
|
|
}
|
|
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
}
|
|
|
|
/*
|
|
* handle word aligned part
|
|
*/
|
|
while (cnt >= 4) {
|
|
data = 0;
|
|
for (i = 0; i < 4; ++i) {
|
|
data = (data << 8) | *src++;
|
|
}
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
cnt -= 4;
|
|
}
|
|
|
|
if (cnt == 0) {
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* handle unaligned tail bytes
|
|
*/
|
|
data = 0;
|
|
for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
|
|
data = (data << 8) | *src++;
|
|
--cnt;
|
|
}
|
|
for (; i < 4; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *) cp);
|
|
}
|
|
|
|
return (write_word(info, wp, data));
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Write a word to Flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
static int write_word(flash_info_t * info, ulong dest, ulong data)
|
|
{
|
|
volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) (info->start[0]);
|
|
volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *) dest;
|
|
volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data;
|
|
ulong start;
|
|
int i;
|
|
|
|
/* Check if Flash is (sufficiently) erased */
|
|
if ((*((volatile FLASH_WORD_SIZE *) dest) &
|
|
(FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
|
|
return (2);
|
|
}
|
|
|
|
for (i = 0; i < 4 / sizeof(FLASH_WORD_SIZE); i++) {
|
|
int flag;
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
|
|
addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
|
|
addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00A000A0;
|
|
|
|
dest2[i] = data2[i];
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
/* data polling for D7 */
|
|
start = get_timer(0);
|
|
while ((dest2[i] & (FLASH_WORD_SIZE) 0x00800080) !=
|
|
(data2[i] & (FLASH_WORD_SIZE) 0x00800080)) {
|
|
|
|
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
|
|
return (1);
|
|
}
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|