upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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373 lines
8.6 KiB
373 lines
8.6 KiB
/*
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* (C) Copyright 2002
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* Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* (C) Copyright 2002
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* Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
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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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#include <common.h>
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#include <asm/arch/pxa-regs.h>
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#define FLASH_BANK_SIZE 0x02000000
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#define MAIN_SECT_SIZE 0x40000 /* 2x16 = 256k per sector */
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flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
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/**
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* flash_init: - initialize data structures for flash chips
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*
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* @return: size of the flash
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*/
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ulong flash_init(void)
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{
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int i, j;
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ulong size = 0;
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for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
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ulong flashbase = 0;
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flash_info[i].flash_id =
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(INTEL_MANUFACT & FLASH_VENDMASK) |
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(INTEL_ID_28F128J3 & FLASH_TYPEMASK);
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flash_info[i].size = FLASH_BANK_SIZE;
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flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
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memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
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switch (i) {
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case 0:
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flashbase = PHYS_FLASH_1;
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break;
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default:
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panic("configured to many flash banks!\n");
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break;
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}
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for (j = 0; j < flash_info[i].sector_count; j++) {
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flash_info[i].start[j] = flashbase + j*MAIN_SECT_SIZE;
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}
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size += flash_info[i].size;
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}
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/* Protect monitor and environment sectors */
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flash_protect(FLAG_PROTECT_SET,
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CFG_FLASH_BASE,
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CFG_FLASH_BASE + _armboot_end_data - _armboot_start,
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&flash_info[0]);
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flash_protect(FLAG_PROTECT_SET,
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CFG_ENV_ADDR,
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CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
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&flash_info[0]);
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return size;
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}
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/**
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* flash_print_info: - print information about the flash situation
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*
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* @param info:
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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, j;
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for (j=0; j<CFG_MAX_FLASH_BANKS; j++) {
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switch (info->flash_id & FLASH_VENDMASK) {
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case (INTEL_MANUFACT & FLASH_VENDMASK):
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printf("Intel: ");
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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 (INTEL_ID_28F128J3 & FLASH_TYPEMASK):
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printf("28F128J3 (128Mbit)\n");
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break;
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default:
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printf("Unknown Chip Type\n");
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return;
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}
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printf(" Size: %ld MB in %d Sectors\n",
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info->size >> 20, 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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if ((i % 5) == 0) printf ("\n ");
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printf (" %08lX%s", info->start[i],
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info->protect[i] ? " (RO)" : " ");
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}
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printf ("\n");
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info++;
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}
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}
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/**
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* flash_erase: - erase flash sectors
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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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int flag, prot, sect;
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int rc = ERR_OK;
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if (info->flash_id == FLASH_UNKNOWN)
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return ERR_UNKNOWN_FLASH_TYPE;
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if ((s_first < 0) || (s_first > s_last)) {
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return ERR_INVAL;
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}
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if ((info->flash_id & FLASH_VENDMASK) != (INTEL_MANUFACT & FLASH_VENDMASK))
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return ERR_UNKNOWN_FLASH_VENDOR;
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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]) prot++;
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}
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if (prot) return ERR_PROTECTED;
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/*
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* Disable interrupts which might cause a timeout
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* here. Remember that our exception vectors are
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* at address 0 in the flash, and we don't want a
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* (ticker) exception to happen while the flash
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* chip is in programming mode.
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*/
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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 && !ctrlc(); sect++) {
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printf("Erasing sector %2d ... ", sect);
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/* arm simple, non interrupt dependent timer */
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reset_timer_masked();
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if (info->protect[sect] == 0) { /* not protected */
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u32 * volatile addr = (u32 * volatile)(info->start[sect]);
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/* erase sector: */
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/* The strata flashs are aligned side by side on */
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/* the data bus, so we have to write the commands */
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/* to both chips here: */
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*addr = 0x00200020; /* erase setup */
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*addr = 0x00D000D0; /* erase confirm */
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while ((*addr & 0x00800080) != 0x00800080) {
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if (get_timer_masked() > CFG_FLASH_ERASE_TOUT) {
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*addr = 0x00B000B0; /* suspend erase*/
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*addr = 0x00FF00FF; /* read mode */
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rc = ERR_TIMOUT;
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goto outahere;
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}
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}
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*addr = 0x00500050; /* clear status register cmd. */
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*addr = 0x00FF00FF; /* resest to read mode */
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}
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printf("ok.\n");
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}
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if (ctrlc()) printf("User Interrupt!\n");
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outahere:
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/* allow flash to settle - wait 10 ms */
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udelay_masked(10000);
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if (flag) enable_interrupts();
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return rc;
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}
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/**
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* write_word: - copy memory to flash
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*
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* @param info:
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* @param dest:
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* @param data:
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* @return:
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*/
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static int write_word (flash_info_t *info, ulong dest, ushort data)
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{
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ushort *addr = (ushort *)dest, val;
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int rc = ERR_OK;
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int flag;
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/* Check if Flash is (sufficiently) erased */
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if ((*addr & data) != data) return ERR_NOT_ERASED;
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/*
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* Disable interrupts which might cause a timeout
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* here. Remember that our exception vectors are
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* at address 0 in the flash, and we don't want a
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* (ticker) exception to happen while the flash
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* chip is in programming mode.
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*/
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flag = disable_interrupts();
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/* clear status register command */
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*addr = 0x50;
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/* program set-up command */
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*addr = 0x40;
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/* latch address/data */
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*addr = data;
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/* arm simple, non interrupt dependent timer */
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reset_timer_masked();
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/* wait while polling the status register */
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while(((val = *addr) & 0x80) != 0x80) {
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if (get_timer_masked() > CFG_FLASH_WRITE_TOUT) {
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rc = ERR_TIMOUT;
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*addr = 0xB0; /* suspend program command */
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goto outahere;
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}
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}
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if(val & 0x1A) { /* check for error */
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printf("\nFlash write error %02x at address %08lx\n",
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(int)val, (unsigned long)dest);
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if(val & (1<<3)) {
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printf("Voltage range error.\n");
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rc = ERR_PROG_ERROR;
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goto outahere;
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}
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if(val & (1<<1)) {
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printf("Device protect error.\n");
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rc = ERR_PROTECTED;
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goto outahere;
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}
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if(val & (1<<4)) {
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printf("Programming error.\n");
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rc = ERR_PROG_ERROR;
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goto outahere;
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}
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rc = ERR_PROG_ERROR;
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goto outahere;
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}
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outahere:
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*addr = 0xFF; /* read array command */
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if (flag) enable_interrupts();
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return rc;
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}
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/**
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* write_buf: - Copy memory to flash.
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*
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* @param info:
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* @param src: source of copy transaction
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* @param addr: where to copy to
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* @param cnt: number of bytes to copy
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*
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* @return error code
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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;
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ushort data;
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int l;
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int i, rc;
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wp = (addr & ~1); /* get lower word aligned address */
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/*
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* handle unaligned start bytes
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*/
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if ((l = addr - wp) != 0) {
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data = 0;
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for (i=0, cp=wp; i<l; ++i, ++cp) {
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data = (data >> 8) | (*(uchar *)cp << 8);
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}
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for (; i<2 && cnt>0; ++i) {
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data = (data >> 8) | (*src++ << 8);
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--cnt;
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++cp;
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}
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for (; cnt==0 && i<2; ++i, ++cp) {
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data = (data >> 8) | (*(uchar *)cp << 8);
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}
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if ((rc = write_word(info, wp, data)) != 0) {
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return (rc);
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}
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wp += 2;
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}
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/*
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* handle word aligned part
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*/
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while (cnt >= 2) {
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/* data = *((vushort*)src); */
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data = *((ushort*)src);
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if ((rc = write_word(info, wp, data)) != 0) {
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return (rc);
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}
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src += 2;
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wp += 2;
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cnt -= 2;
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}
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if (cnt == 0) return ERR_OK;
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/*
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* handle unaligned tail bytes
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*/
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data = 0;
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for (i=0, cp=wp; i<2 && cnt>0; ++i, ++cp) {
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data = (data >> 8) | (*src++ << 8);
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--cnt;
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}
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for (; i<2; ++i, ++cp) {
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data = (data >> 8) | (*(uchar *)cp << 8);
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}
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return write_word(info, wp, data);
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}
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