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Diffstat (limited to 'board/sc520_cdp/flash.c')
-rw-r--r--board/sc520_cdp/flash.c637
1 files changed, 0 insertions, 637 deletions
diff --git a/board/sc520_cdp/flash.c b/board/sc520_cdp/flash.c
deleted file mode 100644
index 64831b7..0000000
--- a/board/sc520_cdp/flash.c
+++ /dev/null
@@ -1,637 +0,0 @@
-/*
- * (C) Copyright 2002, 2003
- * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
- *
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Alex Zuepke <azu@sysgo.de>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <pci.h>
-#include <asm/ic/sc520.h>
-
-#define PROBE_BUFFER_SIZE 1024
-static unsigned char buffer[PROBE_BUFFER_SIZE];
-
-#define SC520_MAX_FLASH_BANKS 3
-#define SC520_FLASH_BANK0_BASE 0x38000000 /* BOOTCS */
-#define SC520_FLASH_BANK1_BASE 0x30000000 /* ROMCS0 */
-#define SC520_FLASH_BANK2_BASE 0x28000000 /* ROMCS1 */
-#define SC520_FLASH_BANKSIZE 0x8000000
-
-#define AMD29LV016B_SIZE 0x200000
-#define AMD29LV016B_SECTORS 32
-
-flash_info_t flash_info[SC520_MAX_FLASH_BANKS];
-
-#define READY 1
-#define ERR 2
-#define TMO 4
-
-/*-----------------------------------------------------------------------
- */
-
-
-static u32 _probe_flash(u32 addr, u32 bw, int il)
-{
- u32 result=0;
-
- /* First do an unlock cycle for the benefit of
- * devices that need it */
-
- switch (bw) {
-
- case 1:
- *(volatile u8*)(addr+0x5555) = 0xaa;
- *(volatile u8*)(addr+0x2aaa) = 0x55;
- *(volatile u8*)(addr+0x5555) = 0x90;
-
- /* Read vendor */
- result = *(volatile u8*)addr;
- result <<= 16;
-
- /* Read device */
- result |= *(volatile u8*)(addr+2);
-
- /* Return device to data mode */
- *(volatile u8*)addr = 0xff;
- *(volatile u8*)(addr+0x5555), 0xf0;
- break;
-
- case 2:
- *(volatile u16*)(addr+0xaaaa) = 0xaaaa;
- *(volatile u16*)(addr+0x5554) = 0x5555;
-
- /* Issue identification command */
- if (il == 2) {
- *(volatile u16*)(addr+0xaaaa) = 0x9090;
-
- /* Read vendor */
- result = *(volatile u8*)addr;
- result <<= 16;
-
- /* Read device */
- result |= *(volatile u8*)(addr+2);
-
- /* Return device to data mode */
- *(volatile u16*)addr = 0xffff;
- *(volatile u16*)(addr+0xaaaa), 0xf0f0;
-
- } else {
- *(volatile u8*)(addr+0xaaaa) = 0x90;
- /* Read vendor */
- result = *(volatile u16*)addr;
- result <<= 16;
-
- /* Read device */
- result |= *(volatile u16*)(addr+2);
-
- /* Return device to data mode */
- *(volatile u8*)addr = 0xff;
- *(volatile u8*)(addr+0xaaaa), 0xf0;
- }
-
- break;
-
- case 4:
- *(volatile u32*)(addr+0x5554) = 0xaaaaaaaa;
- *(volatile u32*)(addr+0xaaa8) = 0x55555555;
-
- switch (il) {
- case 1:
- /* Issue identification command */
- *(volatile u8*)(addr+0x5554) = 0x90;
-
- /* Read vendor */
- result = *(volatile u16*)addr;
- result <<= 16;
-
- /* Read device */
- result |= *(volatile u16*)(addr+4);
-
- /* Return device to data mode */
- *(volatile u8*)addr = 0xff;
- *(volatile u8*)(addr+0x5554), 0xf0;
- break;
-
- case 2:
- /* Issue identification command */
- *(volatile u32*)(addr + 0x5554) = 0x00900090;
-
- /* Read vendor */
- result = *(volatile u16*)addr;
- result <<= 16;
-
- /* Read device */
- result |= *(volatile u16*)(addr+4);
-
- /* Return device to data mode */
- *(volatile u32*)addr = 0x00ff00ff;
- *(volatile u32*)(addr+0x5554), 0x00f000f0;
- break;
-
- case 4:
- /* Issue identification command */
- *(volatile u32*)(addr+0x5554) = 0x90909090;
-
- /* Read vendor */
- result = *(volatile u8*)addr;
- result <<= 16;
-
- /* Read device */
- result |= *(volatile u8*)(addr+4);
-
- /* Return device to data mode */
- *(volatile u32*)addr = 0xffffffff;
- *(volatile u32*)(addr+0x5554), 0xf0f0f0f0;
- break;
- }
- break;
- }
-
-
- return result;
-}
-
-extern int _probe_flash_end;
-asm ("_probe_flash_end:\n"
- ".long 0\n");
-
-static int identify_flash(unsigned address, int width)
-{
- int is;
- int device;
- int vendor;
- int size;
- unsigned res;
-
- u32 (*_probe_flash_ptr)(u32 a, u32 bw, int il);
-
- size = (unsigned)&_probe_flash_end - (unsigned)_probe_flash;
-
- if (size > PROBE_BUFFER_SIZE) {
- printf("_probe_flash() routine too large (%d) %p - %p\n",
- size, &_probe_flash_end, _probe_flash);
- return 0;
- }
-
- memcpy(buffer, _probe_flash, size);
- _probe_flash_ptr = (void*)buffer;
-
- is = disable_interrupts();
- res = _probe_flash_ptr(address, width, 1);
- if (is) {
- enable_interrupts();
- }
-
-
- vendor = res >> 16;
- device = res & 0xffff;
-
-
- return res;
-}
-
-ulong flash_init(void)
-{
- int i, j;
- ulong size = 0;
-
- for (i = 0; i < SC520_MAX_FLASH_BANKS; i++) {
- unsigned id;
- ulong flashbase = 0;
- int sectsize = 0;
-
- memset(flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT);
- switch (i) {
- case 0:
- flashbase = SC520_FLASH_BANK0_BASE;
- break;
- case 1:
- flashbase = SC520_FLASH_BANK1_BASE;
- break;
- case 2:
- flashbase = SC520_FLASH_BANK2_BASE;
- break;
- default:
- panic("configured too many flash banks!\n");
- }
-
- id = identify_flash(flashbase, 4);
- switch (id & 0x00ff00ff) {
- case 0x000100c8:
- /* 29LV016B/29LV017B */
- flash_info[i].flash_id =
- (AMD_MANUFACT & FLASH_VENDMASK) |
- (AMD_ID_LV016B & FLASH_TYPEMASK);
-
- flash_info[i].size = AMD29LV016B_SIZE*4;
- flash_info[i].sector_count = AMD29LV016B_SECTORS;
- sectsize = (AMD29LV016B_SIZE*4)/AMD29LV016B_SECTORS;
- printf("Bank %d: 4 x AMD 29LV017B\n", i);
- break;
-
-
- default:
- printf("Bank %d have unknown flash %08x\n", i, id);
- flash_info[i].flash_id = FLASH_UNKNOWN;
- continue;
- }
-
- for (j = 0; j < flash_info[i].sector_count; j++) {
- flash_info[i].start[j] = flashbase + j * sectsize;
- }
- size += flash_info[i].size;
-
- flash_protect(FLAG_PROTECT_CLEAR,
- flash_info[i].start[0],
- flash_info[i].start[0] + flash_info[i].size - 1,
- &flash_info[i]);
- }
-
- /*
- * Protect monitor and environment sectors
- */
- flash_protect(FLAG_PROTECT_SET,
- i386boot_start,
- i386boot_end,
- &flash_info[0]);
-#ifdef CONFIG_ENV_ADDR
- flash_protect(FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR,
- CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
- &flash_info[0]);
-#endif
- return size;
-}
-
-/*-----------------------------------------------------------------------
- */
-void flash_print_info(flash_info_t *info)
-{
- int i;
-
- switch (info->flash_id & FLASH_VENDMASK) {
-
- case (AMD_MANUFACT & FLASH_VENDMASK):
- printf("AMD: ");
- switch (info->flash_id & FLASH_TYPEMASK) {
- case (AMD_ID_LV016B & FLASH_TYPEMASK):
- printf("4x AMD29LV017B (4x16Mbit)\n");
- break;
- default:
- printf("Unknown Chip Type\n");
- goto done;
- break;
- }
-
- break;
- default:
- printf("Unknown Vendor ");
- break;
- }
-
-
- printf(" Size: %ld MB in %d Sectors\n",
- info->size >> 20, info->sector_count);
-
- printf(" Sector Start Addresses:");
- for (i = 0; i < info->sector_count; i++) {
- if ((i % 5) == 0) {
- printf ("\n ");
- }
- printf (" %08lX%s", info->start[i],
- info->protect[i] ? " (RO)" : " ");
- }
- printf ("\n");
-
-done: ;
-}
-
-/*-----------------------------------------------------------------------
- */
-
-/* this needs to be inlined, the SWTMRMMILLI register is reset by each read */
-#define __udelay(delay) \
-{ \
- unsigned micro; \
- unsigned milli=0; \
- \
- micro = sc520_mmcr->swtmrmilli; \
- \
- for (;;) { \
- \
- milli += sc520_mmcr->swtmrmilli; \
- micro = sc520_mmcr->swtmrmicro; \
- \
- if ((delay) <= (micro + (milli * 1000))) { \
- break; \
- } \
- } \
-} while (0)
-
-static u32 _amd_erase_flash(u32 addr, u32 sector)
-{
- unsigned elapsed;
-
- /* Issue erase */
- *(volatile u32*)(addr + 0x5554) = 0xAAAAAAAA;
- *(volatile u32*)(addr + 0xaaa8) = 0x55555555;
- *(volatile u32*)(addr + 0x5554) = 0x80808080;
- /* And one unlock */
- *(volatile u32*)(addr + 0x5554) = 0xAAAAAAAA;
- *(volatile u32*)(addr + 0xaaa8) = 0x55555555;
- /* Sector erase command comes last */
- *(volatile u32*)(addr + sector) = 0x30303030;
-
- elapsed = sc520_mmcr->swtmrmilli; /* dummy read */
- elapsed = 0;
- __udelay(50);
- while (((*(volatile u32*)(addr + sector)) & 0x80808080) != 0x80808080) {
-
- elapsed += sc520_mmcr->swtmrmilli;
- if (elapsed > ((CONFIG_SYS_FLASH_ERASE_TOUT/CONFIG_SYS_HZ) * 1000)) {
- *(volatile u32*)(addr) = 0xf0f0f0f0;
- return 1;
- }
- }
-
- *(volatile u32*)(addr) = 0xf0f0f0f0;
-
- return 0;
-}
-
-extern int _amd_erase_flash_end;
-asm ("_amd_erase_flash_end:\n"
- ".long 0\n");
-
-int flash_erase(flash_info_t *info, int s_first, int s_last)
-{
- u32 (*_erase_flash_ptr)(u32 a, u32 so);
- int prot;
- int sect;
- unsigned size;
-
- if ((s_first < 0) || (s_first > s_last)) {
- if (info->flash_id == FLASH_UNKNOWN) {
- printf("- missing\n");
- } else {
- printf("- no sectors to erase\n");
- }
- return 1;
- }
-
- if ((info->flash_id & FLASH_VENDMASK) == (AMD_MANUFACT & FLASH_VENDMASK)) {
- size = (unsigned)&_amd_erase_flash_end - (unsigned)_amd_erase_flash;
-
- if (size > PROBE_BUFFER_SIZE) {
- printf("_amd_erase_flash() routine too large (%d) %p - %p\n",
- size, &_amd_erase_flash_end, _amd_erase_flash);
- return 0;
- }
-
- memcpy(buffer, _amd_erase_flash, size);
- _erase_flash_ptr = (void*)buffer;
-
- } else {
- printf ("Can't erase unknown flash type - aborted\n");
- return 1;
- }
-
- prot = 0;
- for (sect=s_first; sect<=s_last; ++sect) {
- if (info->protect[sect]) {
- prot++;
- }
- }
-
- if (prot) {
- printf ("- Warning: %d protected sectors will not be erased!\n", prot);
- } else {
- printf ("\n");
- }
-
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last; sect++) {
-
- if (info->protect[sect] == 0) { /* not protected */
- int res;
- int flag;
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- res = _erase_flash_ptr(info->start[0], info->start[sect]-info->start[0]);
-
- /* re-enable interrupts if necessary */
- if (flag) {
- enable_interrupts();
- }
-
-
- if (res) {
- printf("Erase timed out, sector %d\n", sect);
- return res;
- }
-
- putc('.');
- }
- }
-
-
- return 0;
-}
-
-/*-----------------------------------------------------------------------
- * Write a word to Flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- */
-static int _amd_write_word(unsigned start, unsigned dest, unsigned data)
-{
- volatile u32 *addr2 = (u32*)start;
- volatile u32 *dest2 = (u32*)dest;
- volatile u32 *data2 = (u32*)&data;
- unsigned elapsed;
-
- /* Check if Flash is (sufficiently) erased */
- if ((*((volatile u32*)dest) & (u32)data) != (u32)data) {
- return 2;
- }
-
- addr2[0x5554] = 0xAAAAAAAA;
- addr2[0xaaa8] = 0x55555555;
- addr2[0x5554] = 0xA0A0A0A0;
-
- dest2[0] = data;
-
- elapsed = sc520_mmcr->swtmrmilli; /* dummy read */
- elapsed = 0;
-
- /* data polling for D7 */
- while ((dest2[0] & 0x80808080) != (data2[0] & 0x80808080)) {
- elapsed += sc520_mmcr->swtmrmilli;
- if (elapsed > ((CONFIG_SYS_FLASH_WRITE_TOUT/CONFIG_SYS_HZ) * 1000)) {
- addr2[0] = 0xf0f0f0f0;
- return 1;
- }
- }
-
-
- addr2[0] = 0xf0f0f0f0;
-
- return 0;
-}
-
-extern int _amd_write_word_end;
-asm ("_amd_write_word_end:\n"
- ".long 0\n");
-
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- * 3 - Unsupported flash type
- */
-
-int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
-{
- ulong cp, wp, data;
- int i, l, rc;
- int flag;
- u32 (*_write_word_ptr)(unsigned start, unsigned dest, unsigned data);
- unsigned size;
-
- if ((info->flash_id & FLASH_VENDMASK) == (AMD_MANUFACT & FLASH_VENDMASK)) {
- size = (unsigned)&_amd_write_word_end - (unsigned)_amd_write_word;
-
- if (size > PROBE_BUFFER_SIZE) {
- printf("_amd_write_word() routine too large (%d) %p - %p\n",
- size, &_amd_write_word_end, _amd_write_word);
- return 0;
- }
-
- memcpy(buffer, _amd_write_word, size);
- _write_word_ptr = (void*)buffer;
-
- } else {
- printf ("Can't program unknown flash type - aborted\n");
- return 3;
- }
-
-
- wp = (addr & ~3); /* get lower word aligned address */
-
-
- /*
- * handle unaligned start bytes
- */
- if ((l = addr - wp) != 0) {
- data = 0;
- for (i=0, cp=wp; i<l; ++i, ++cp) {
- data |= (*(uchar *)cp) << (8*i);
- }
- for (; i<4 && cnt>0; ++i) {
- data |= *src++ << (8*i);
- --cnt;
- ++cp;
- }
- for (; cnt==0 && i<4; ++i, ++cp) {
- data |= (*(uchar *)cp) << (8*i);
- }
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- rc = _write_word_ptr(info->start[0], wp, data);
-
- /* re-enable interrupts if necessary */
- if (flag) {
- enable_interrupts();
- }
- if (rc != 0) {
- return rc;
- }
- wp += 4;
- }
-
- /*
- * handle word aligned part
- */
- while (cnt >= 4) {
- data = 0;
-
- for (i=0; i<4; ++i) {
- data |= *src++ << (8*i);
- }
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- rc = _write_word_ptr(info->start[0], wp, data);
-
- /* re-enable interrupts if necessary */
- if (flag) {
- enable_interrupts();
- }
- if (rc != 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 |= *src++ << (8*i);
- --cnt;
- }
-
- for (; i<4; ++i, ++cp) {
- data |= (*(uchar *)cp) << (8*i);
- }
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- rc = _write_word_ptr(info->start[0], wp, data);
-
- /* re-enable interrupts if necessary */
- if (flag) {
- enable_interrupts();
- }
-
- return rc;
-
-}
generated by cgit v1.1 at 2024-11-24 18:06:51 +0000