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-rw-r--r--board/shannon/flash.c475
1 files changed, 0 insertions, 475 deletions
diff --git a/board/shannon/flash.c b/board/shannon/flash.c
deleted file mode 100644
index 179ec5f..0000000
--- a/board/shannon/flash.c
+++ /dev/null
@@ -1,475 +0,0 @@
-/*
- * (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>
-
-ulong myflush(void);
-
-
-#define FLASH_BANK_SIZE 0x400000 /* 4 MB */
-#define MAIN_SECT_SIZE 0x20000 /* 128 KB */
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-
-
-#define CMD_READ_ARRAY 0x00F000F0
-#define CMD_UNLOCK1 0x00AA00AA
-#define CMD_UNLOCK2 0x00550055
-#define CMD_ERASE_SETUP 0x00800080
-#define CMD_ERASE_CONFIRM 0x00300030
-#define CMD_PROGRAM 0x00A000A0
-#define CMD_UNLOCK_BYPASS 0x00200020
-
-#define MEM_FLASH_ADDR1 (*(volatile u32 *)(CONFIG_SYS_FLASH_BASE + (0x00000555 << 2)))
-#define MEM_FLASH_ADDR2 (*(volatile u32 *)(CONFIG_SYS_FLASH_BASE + (0x000002AA << 2)))
-
-#define BIT_ERASE_DONE 0x00800080
-#define BIT_RDY_MASK 0x00800080
-#define BIT_PROGRAM_ERROR 0x00200020
-#define BIT_TIMEOUT 0x80000000 /* our flag */
-
-#define READY 1
-#define ERR 2
-#define TMO 4
-
-/*-----------------------------------------------------------------------
- */
-
-ulong flash_init(void)
-{
- int i, j;
- ulong size = 0;
-
- for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++)
- {
- ulong flashbase = 0;
- flash_info[i].flash_id =
- (AMD_MANUFACT & FLASH_VENDMASK) |
- (AMD_ID_LV160B & FLASH_TYPEMASK);
- flash_info[i].size = FLASH_BANK_SIZE;
- flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT;
- memset(flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT);
- if (i == 0)
- flashbase = PHYS_FLASH_1;
- else
- panic("configured too many flash banks!\n");
- for (j = 0; j < flash_info[i].sector_count; j++)
- {
-
- if (j <= 3)
- {
- /* 1st one is 32 KB */
- if (j == 0)
- {
- flash_info[i].start[j] = flashbase + 0;
- }
-
- /* 2nd and 3rd are both 16 KB */
- if ((j == 1) || (j == 2))
- {
- flash_info[i].start[j] = flashbase + 0x8000 + (j-1)*0x4000;
- }
-
- /* 4th 64 KB */
- if (j == 3)
- {
- flash_info[i].start[j] = flashbase + 0x10000;
- }
- }
- else
- {
- flash_info[i].start[j] = flashbase + (j - 3)*MAIN_SECT_SIZE;
- }
- }
- size += flash_info[i].size;
- }
-
- /*
- * Protect monitor and environment sectors
- * Inferno is complicated, it's hardware locked
- */
-#ifdef CONFIG_INFERNO
- /* first one, 0x00000 to 0x07fff */
- flash_protect(FLAG_PROTECT_SET,
- CONFIG_SYS_FLASH_BASE + 0x00000,
- CONFIG_SYS_FLASH_BASE + 0x08000 - 1,
- &flash_info[0]);
-
- /* third to 10th, 0x0c000 - 0xdffff */
- flash_protect(FLAG_PROTECT_SET,
- CONFIG_SYS_FLASH_BASE + 0x0c000,
- CONFIG_SYS_FLASH_BASE + 0xe0000 - 1,
- &flash_info[0]);
-#else
- flash_protect(FLAG_PROTECT_SET,
- CONFIG_SYS_FLASH_BASE,
- CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
- &flash_info[0]);
-
- 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: ");
- break;
- default:
- printf("Unknown Vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK)
- {
- case (AMD_ID_LV160B & FLASH_TYPEMASK):
- printf("2x Amd29F160BB (16Mbit)\n");
- break;
- default:
- printf("Unknown Chip Type\n");
- goto Done;
- 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:
- ;
-}
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase (flash_info_t *info, int s_first, int s_last)
-{
- ulong result;
- int iflag, cflag, prot, sect;
- int rc = ERR_OK;
- int chip1, chip2;
- ulong start;
-
- /* first look for protection bits */
-
- if (info->flash_id == FLASH_UNKNOWN)
- return ERR_UNKNOWN_FLASH_TYPE;
-
- if ((s_first < 0) || (s_first > s_last)) {
- return ERR_INVAL;
- }
-
- if ((info->flash_id & FLASH_VENDMASK) !=
- (AMD_MANUFACT & FLASH_VENDMASK)) {
- return ERR_UNKNOWN_FLASH_VENDOR;
- }
-
- prot = 0;
- for (sect=s_first; sect<=s_last; ++sect) {
- if (info->protect[sect]) {
- prot++;
- }
- }
- if (prot)
- return ERR_PROTECTED;
-
- /*
- * Disable interrupts which might cause a timeout
- * here. Remember that our exception vectors are
- * at address 0 in the flash, and we don't want a
- * (ticker) exception to happen while the flash
- * chip is in programming mode.
- */
- cflag = icache_status();
- icache_disable();
- iflag = disable_interrupts();
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last && !ctrlc(); sect++)
- {
- printf("Erasing sector %2d ... ", sect);
-
- /* arm simple, non interrupt dependent timer */
- start = get_timer(0);
-
- if (info->protect[sect] == 0)
- { /* not protected */
- vu_long *addr = (vu_long *)(info->start[sect]);
-
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- MEM_FLASH_ADDR1 = CMD_ERASE_SETUP;
-
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- *addr = CMD_ERASE_CONFIRM;
-
- /* wait until flash is ready */
- chip1 = chip2 = 0;
-
- do
- {
- result = *addr;
-
- /* check timeout */
- if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT)
- {
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
- chip1 = TMO;
- break;
- }
-
- if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE)
- chip1 = READY;
-
- if (!chip1 && (result & 0xFFFF) & BIT_PROGRAM_ERROR)
- chip1 = ERR;
-
- if (!chip2 && (result >> 16) & BIT_ERASE_DONE)
- chip2 = READY;
-
- if (!chip2 && (result >> 16) & BIT_PROGRAM_ERROR)
- chip2 = ERR;
-
- } while (!chip1 || !chip2);
-
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
-
- if (chip1 == ERR || chip2 == ERR)
- {
- rc = ERR_PROG_ERROR;
- goto outahere;
- }
- if (chip1 == TMO)
- {
- rc = ERR_TIMOUT;
- goto outahere;
- }
-
- printf("ok.\n");
- }
- else /* it was protected */
- {
- printf("protected!\n");
- }
- }
-
- if (ctrlc())
- printf("User Interrupt!\n");
-
-outahere:
- /* allow flash to settle - wait 10 ms */
- udelay_masked(10000);
-
- if (iflag)
- enable_interrupts();
-
- if (cflag)
- icache_enable();
-
- return rc;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash
- */
-
-static int write_word (flash_info_t *info, ulong dest, ulong data)
-{
- vu_long *addr = (vu_long *)dest;
- ulong result;
- int rc = ERR_OK;
- int cflag, iflag;
- int chip1, chip2;
- ulong start;
-
- /*
- * Check if Flash is (sufficiently) erased
- */
- result = *addr;
- if ((result & data) != data)
- return ERR_NOT_ERASED;
-
-
- /*
- * Disable interrupts which might cause a timeout
- * here. Remember that our exception vectors are
- * at address 0 in the flash, and we don't want a
- * (ticker) exception to happen while the flash
- * chip is in programming mode.
- */
- cflag = icache_status();
- icache_disable();
- iflag = disable_interrupts();
-
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- MEM_FLASH_ADDR1 = CMD_UNLOCK_BYPASS;
- *addr = CMD_PROGRAM;
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- start = get_timer(0);
-
- /* wait until flash is ready */
- chip1 = chip2 = 0;
- do
- {
- result = *addr;
-
- /* check timeout */
- if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT)
- {
- chip1 = ERR | TMO;
- break;
- }
- if (!chip1 && ((result & 0x80) == (data & 0x80)))
- chip1 = READY;
-
- if (!chip1 && ((result & 0xFFFF) & BIT_PROGRAM_ERROR))
- {
- result = *addr;
-
- if ((result & 0x80) == (data & 0x80))
- chip1 = READY;
- else
- chip1 = ERR;
- }
-
- if (!chip2 && ((result & (0x80 << 16)) == (data & (0x80 << 16))))
- chip2 = READY;
-
- if (!chip2 && ((result >> 16) & BIT_PROGRAM_ERROR))
- {
- result = *addr;
-
- if ((result & (0x80 << 16)) == (data & (0x80 << 16)))
- chip2 = READY;
- else
- chip2 = ERR;
- }
-
- } while (!chip1 || !chip2);
-
- *addr = CMD_READ_ARRAY;
-
- if (chip1 == ERR || chip2 == ERR || *addr != data)
- rc = ERR_PROG_ERROR;
-
- if (iflag)
- enable_interrupts();
-
- if (cflag)
- icache_enable();
-
- return rc;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash.
- */
-
-int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
-{
- ulong cp, wp, data;
- int l;
- int i, rc;
-
- 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 = (data >> 8) | (*(uchar *)cp << 24);
- }
- for (; i<4 && cnt>0; ++i) {
- data = (data >> 8) | (*src++ << 24);
- --cnt;
- ++cp;
- }
- for (; cnt==0 && i<4; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *)cp << 24);
- }
-
- if ((rc = write_word(info, wp, data)) != 0) {
- return (rc);
- }
- wp += 4;
- }
-
- /*
- * handle word aligned part
- */
- while (cnt >= 4) {
- data = *((vu_long*)src);
- if ((rc = write_word(info, wp, data)) != 0) {
- return (rc);
- }
- src += 4;
- wp += 4;
- cnt -= 4;
- }
-
- if (cnt == 0) {
- return ERR_OK;
- }
-
- /*
- * handle unaligned tail bytes
- */
- data = 0;
- for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
- data = (data >> 8) | (*src++ << 24);
- --cnt;
- }
- for (; i<4; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *)cp << 24);
- }
-
- return write_word(info, wp, data);
-}
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