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-rw-r--r--board/purple/flash.c595
1 files changed, 0 insertions, 595 deletions
diff --git a/board/purple/flash.c b/board/purple/flash.c
deleted file mode 100644
index 5cee35e..0000000
--- a/board/purple/flash.c
+++ /dev/null
@@ -1,595 +0,0 @@
-/*
- * (C) Copyright 2003
- * Wolfgang Denk, DENX Software Engineering, wd@denx.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/inca-ip.h>
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
-
-typedef unsigned long FLASH_PORT_WIDTH;
-typedef volatile unsigned long FLASH_PORT_WIDTHV;
-
-#define FLASH_ID_MASK 0xFFFFFFFF
-
-#define FPW FLASH_PORT_WIDTH
-#define FPWV FLASH_PORT_WIDTHV
-
-#define ORMASK(size) ((-size) & OR_AM_MSK)
-
-#define FLASH29_REG_ADRS(reg) ((FPWV *)PHYS_FLASH_1 + (reg))
-
-/* FLASH29 command register addresses */
-
-#define FLASH29_REG_FIRST_CYCLE FLASH29_REG_ADRS (0x1555)
-#define FLASH29_REG_SECOND_CYCLE FLASH29_REG_ADRS (0x2aaa)
-#define FLASH29_REG_THIRD_CYCLE FLASH29_REG_ADRS (0x3555)
-#define FLASH29_REG_FOURTH_CYCLE FLASH29_REG_ADRS (0x4555)
-#define FLASH29_REG_FIFTH_CYCLE FLASH29_REG_ADRS (0x5aaa)
-#define FLASH29_REG_SIXTH_CYCLE FLASH29_REG_ADRS (0x6555)
-
-/* FLASH29 command definitions */
-
-#define FLASH29_CMD_FIRST 0xaaaaaaaa
-#define FLASH29_CMD_SECOND 0x55555555
-#define FLASH29_CMD_FOURTH 0xaaaaaaaa
-#define FLASH29_CMD_FIFTH 0x55555555
-#define FLASH29_CMD_SIXTH 0x10101010
-
-#define FLASH29_CMD_SECTOR 0x30303030
-#define FLASH29_CMD_PROGRAM 0xa0a0a0a0
-#define FLASH29_CMD_CHIP_ERASE 0x80808080
-#define FLASH29_CMD_READ_RESET 0xf0f0f0f0
-#define FLASH29_CMD_AUTOSELECT 0x90909090
-#define FLASH29_CMD_READ 0x70707070
-
-#define IN_RAM_CMD_READ 0x1
-#define IN_RAM_CMD_WRITE 0x2
-
-#define FLASH_WRITE_CMD ((ulong)(flash_write_cmd) & 0x7)+0xbf008000
-#define FLASH_READ_CMD ((ulong)(flash_read_cmd) & 0x7)+0xbf008000
-
-typedef void (*FUNCPTR_CP)(ulong *source, ulong *destination, ulong nlongs);
-typedef void (*FUNCPTR_RD)(int cmd, FPWV * pFA, char * string, int strLen);
-typedef void (*FUNCPTR_WR)(int cmd, FPWV * pFA, FPW value);
-
-static ulong flash_get_size(FPWV *addr, flash_info_t *info);
-static int write_word(flash_info_t *info, FPWV *dest, FPW data);
-static void flash_get_offsets(ulong base, flash_info_t *info);
-static flash_info_t *flash_get_info(ulong base);
-
-static void load_cmd(ulong cmd);
-static ulong in_ram_cmd = 0;
-
-
-/******************************************************************************
-*
-* Don't change the program architecture
-* This architecture assure the program
-* can be relocated to scratch ram
-*/
-static void flash_read_cmd(int cmd, FPWV * pFA, char * string, int strLen)
-{
- int i,j;
- FPW temp,temp1;
- FPWV *str;
-
- str = (FPWV *)string;
-
- j= strLen/4;
-
- if(cmd == FLASH29_CMD_AUTOSELECT)
- {
- *(FLASH29_REG_FIRST_CYCLE) = FLASH29_CMD_FIRST;
- *(FLASH29_REG_SECOND_CYCLE) = FLASH29_CMD_SECOND;
- *(FLASH29_REG_THIRD_CYCLE) = FLASH29_CMD_AUTOSELECT;
- }
-
- if(cmd == FLASH29_CMD_READ)
- {
- i = 0;
- while(i<j)
- {
- temp = *pFA++;
- temp1 = *(int *)0xa0000000;
- *(int *)0xbf0081f8 = temp1 + temp;
- *str++ = temp;
- i++;
- }
- }
-
- if(cmd == FLASH29_CMD_READ_RESET)
- {
- *(FLASH29_REG_FIRST_CYCLE) = FLASH29_CMD_FIRST;
- *(FLASH29_REG_SECOND_CYCLE) = FLASH29_CMD_SECOND;
- *(FLASH29_REG_THIRD_CYCLE) = FLASH29_CMD_READ_RESET;
- }
-
- *(int *)0xbf0081f8 = *(int *)0xa0000000; /* dummy read switch back to sdram interface */
-}
-
-/******************************************************************************
-*
-* Don't change the program architecture
-* This architecture assure the program
-* can be relocated to scratch ram
-*/
-static void flash_write_cmd(int cmd, FPWV * pFA, FPW value)
-{
- *(FLASH29_REG_FIRST_CYCLE) = FLASH29_CMD_FIRST;
- *(FLASH29_REG_SECOND_CYCLE) = FLASH29_CMD_SECOND;
-
- if (cmd == FLASH29_CMD_SECTOR)
- {
- *(FLASH29_REG_THIRD_CYCLE) = FLASH29_CMD_CHIP_ERASE;
- *(FLASH29_REG_FOURTH_CYCLE) = FLASH29_CMD_FOURTH;
- *(FLASH29_REG_FIFTH_CYCLE) = FLASH29_CMD_FIFTH;
- *pFA = FLASH29_CMD_SECTOR;
- }
-
- if (cmd == FLASH29_CMD_SIXTH)
- {
- *(FLASH29_REG_THIRD_CYCLE) = FLASH29_CMD_CHIP_ERASE;
- *(FLASH29_REG_FOURTH_CYCLE) = FLASH29_CMD_FOURTH;
- *(FLASH29_REG_FIFTH_CYCLE) = FLASH29_CMD_FIFTH;
- *(FLASH29_REG_SIXTH_CYCLE) = FLASH29_CMD_SIXTH;
- }
-
- if (cmd == FLASH29_CMD_PROGRAM)
- {
- *(FLASH29_REG_THIRD_CYCLE) = FLASH29_CMD_PROGRAM;
- *pFA = value;
- }
-
- if (cmd == FLASH29_CMD_READ_RESET)
- {
- *(FLASH29_REG_THIRD_CYCLE) = FLASH29_CMD_READ_RESET;
- }
-
- *(int *)0xbf0081f8 = *(int *)0xa0000000; /* dummy read switch back to sdram interface */
-}
-
-static void load_cmd(ulong cmd)
-{
- ulong *src;
- ulong *dst;
- FUNCPTR_CP absEntry;
- ulong func;
-
- if (in_ram_cmd & cmd) return;
-
- if (cmd == IN_RAM_CMD_READ)
- {
- func = (ulong)flash_read_cmd;
- }
- else
- {
- func = (ulong)flash_write_cmd;
- }
-
- src = (ulong *)(func & 0xfffffff8);
- dst = (ulong *)0xbf008000;
- absEntry = (FUNCPTR_CP)(0xbf0081d0);
- absEntry(src,dst,0x38);
-
- in_ram_cmd = cmd;
-}
-
-/*-----------------------------------------------------------------------
- * flash_init()
- *
- * sets up flash_info and returns size of FLASH (bytes)
- */
-unsigned long flash_init (void)
-{
- unsigned long size = 0;
- int i;
-
- load_cmd(IN_RAM_CMD_READ);
-
- /* Init: no FLASHes known */
- for (i=0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
- ulong flashbase = PHYS_FLASH_1;
- ulong * buscon = (ulong *) INCA_IP_EBU_EBU_BUSCON0;
-
- /* Disable write protection */
- *buscon &= ~INCA_IP_EBU_EBU_BUSCON1_WRDIS;
-
-#if 1
- memset(&flash_info[i], 0, sizeof(flash_info_t));
-#endif
-
- flash_info[i].size =
- flash_get_size((FPW *)flashbase, &flash_info[i]);
-
- if (flash_info[i].flash_id == FLASH_UNKNOWN) {
- printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx\n",
- i, flash_info[i].size);
- }
-
- size += flash_info[i].size;
- }
-
-#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
- /* monitor protection ON by default */
- flash_protect(FLAG_PROTECT_SET,
- CONFIG_SYS_MONITOR_BASE,
- CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
- flash_get_info(CONFIG_SYS_MONITOR_BASE));
-#endif
-
-#ifdef CONFIG_ENV_IS_IN_FLASH
- /* ENV protection ON by default */
- flash_protect(FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR,
- CONFIG_ENV_ADDR+CONFIG_ENV_SIZE-1,
- flash_get_info(CONFIG_ENV_ADDR));
-#endif
-
- return size;
-}
-
-/*-----------------------------------------------------------------------
- */
-static void flash_get_offsets (ulong base, flash_info_t *info)
-{
- int i;
-
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD
- && (info->flash_id & FLASH_TYPEMASK) == FLASH_AM160B) {
-
- int bootsect_size[4]; /* number of bytes/boot sector */
- int sect_size; /* number of bytes/regular sector */
-
- bootsect_size[0] = 0x00008000;
- bootsect_size[1] = 0x00004000;
- bootsect_size[2] = 0x00004000;
- bootsect_size[3] = 0x00010000;
- sect_size = 0x00020000;
-
- /* set sector offsets for bottom boot block type */
- for (i = 0; i < info->sector_count; i++) {
- info->start[i] = base;
- base += i < 4 ? bootsect_size[i] : sect_size;
- }
- }
-}
-
-/*-----------------------------------------------------------------------
- */
-
-static flash_info_t *flash_get_info(ulong base)
-{
- int i;
- flash_info_t * info;
-
- for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i ++) {
- info = & flash_info[i];
- if (info->start[0] <= base && base < info->start[0] + info->size)
- break;
- }
-
- return i == CONFIG_SYS_MAX_FLASH_BANKS ? 0 : info;
-}
-
-/*-----------------------------------------------------------------------
- */
-
-void flash_print_info (flash_info_t *info)
-{
- int i;
- uchar *boottype;
- uchar *bootletter;
- char *fmt;
- uchar botbootletter[] = "B";
- uchar topbootletter[] = "T";
- uchar botboottype[] = "bottom boot sector";
- uchar topboottype[] = "top boot sector";
-
- if (info->flash_id == FLASH_UNKNOWN) {
- printf ("missing or unknown FLASH type\n");
- return;
- }
-
- switch (info->flash_id & FLASH_VENDMASK) {
- case FLASH_MAN_AMD: printf ("AMD "); break;
- case FLASH_MAN_BM: printf ("BRIGHT MICRO "); break;
- case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
- case FLASH_MAN_SST: printf ("SST "); break;
- case FLASH_MAN_STM: printf ("STM "); break;
- case FLASH_MAN_INTEL: printf ("INTEL "); break;
- default: printf ("Unknown Vendor "); break;
- }
-
- /* check for top or bottom boot, if it applies */
- if (info->flash_id & FLASH_BTYPE) {
- boottype = botboottype;
- bootletter = botbootletter;
- }
- else {
- boottype = topboottype;
- bootletter = topbootletter;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_AM160B:
- fmt = "29LV160B%s (16 Mbit, %s)\n";
- break;
- case FLASH_28F800C3B:
- case FLASH_28F800C3T:
- fmt = "28F800C3%s (8 Mbit, %s)\n";
- break;
- case FLASH_INTEL800B:
- case FLASH_INTEL800T:
- fmt = "28F800B3%s (8 Mbit, %s)\n";
- break;
- case FLASH_28F160C3B:
- case FLASH_28F160C3T:
- fmt = "28F160C3%s (16 Mbit, %s)\n";
- break;
- case FLASH_INTEL160B:
- case FLASH_INTEL160T:
- fmt = "28F160B3%s (16 Mbit, %s)\n";
- break;
- case FLASH_28F320C3B:
- case FLASH_28F320C3T:
- fmt = "28F320C3%s (32 Mbit, %s)\n";
- break;
- case FLASH_INTEL320B:
- case FLASH_INTEL320T:
- fmt = "28F320B3%s (32 Mbit, %s)\n";
- break;
- case FLASH_28F640C3B:
- case FLASH_28F640C3T:
- fmt = "28F640C3%s (64 Mbit, %s)\n";
- break;
- case FLASH_INTEL640B:
- case FLASH_INTEL640T:
- fmt = "28F640B3%s (64 Mbit, %s)\n";
- break;
- default:
- fmt = "Unknown Chip Type\n";
- break;
- }
-
- printf (fmt, bootletter, boottype);
-
- 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");
-}
-
-/*-----------------------------------------------------------------------
- */
-
-/*
- * The following code cannot be run from FLASH!
- */
-
-ulong flash_get_size (FPWV *addr, flash_info_t *info)
-{
- FUNCPTR_RD absEntry;
- FPW retValue;
- int flag;
-
- load_cmd(IN_RAM_CMD_READ);
- absEntry = (FUNCPTR_RD)FLASH_READ_CMD;
-
- flag = disable_interrupts();
- absEntry(FLASH29_CMD_AUTOSELECT,0,0,0);
- if (flag) enable_interrupts();
-
- udelay(100);
-
- flag = disable_interrupts();
- absEntry(FLASH29_CMD_READ, addr + 1, (char *)&retValue, sizeof(retValue));
- absEntry(FLASH29_CMD_READ_RESET,0,0,0);
- if (flag) enable_interrupts();
-
- udelay(100);
-
- switch (retValue) {
-
- case (FPW)AMD_ID_LV160B:
- info->flash_id += FLASH_AM160B;
- info->sector_count = 35;
- info->size = 0x00400000;
- break; /* => 8 or 16 MB */
-
- default:
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0;
- return (0); /* => no or unknown flash */
- }
-
- flash_get_offsets((ulong)addr, info);
-
- return (info->size);
-}
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase (flash_info_t *info, int s_first, int s_last)
-{
- FPWV *addr;
- int flag, prot, sect;
- ulong start, now, last;
- FUNCPTR_WR absEntry;
-
- load_cmd(IN_RAM_CMD_WRITE);
- absEntry = (FUNCPTR_WR)FLASH_WRITE_CMD;
-
- 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;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_AM160B:
- break;
- case FLASH_UNKNOWN:
- default:
- printf ("Can't erase unknown flash type %08lx - aborted\n",
- info->flash_id);
- 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");
- }
-
- last = get_timer(0);
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last; sect++) {
-
- if (info->protect[sect] != 0) /* protected, skip it */
- continue;
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- addr = (FPWV *)(info->start[sect]);
- absEntry(FLASH29_CMD_SECTOR, addr, 0);
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- start = get_timer(0);
-
- while ((now = get_timer(start)) <= CONFIG_SYS_FLASH_ERASE_TOUT) {
-
- /* show that we're waiting */
- if ((get_timer(last)) > CONFIG_SYS_HZ) {/* every second */
- putc ('.');
- last = get_timer(0);
- }
- }
-
- flag = disable_interrupts();
- absEntry(FLASH29_CMD_READ_RESET,0,0);
- if (flag)
- enable_interrupts();
- }
-
- printf (" done\n");
- return 0;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- */
-int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
-{
- FPW data = 0; /* 16 or 32 bit word, matches flash bus width on MPC8XX */
- int bytes; /* number of bytes to program in current word */
- int left; /* number of bytes left to program */
- int i, res;
-
- for (left = cnt, res = 0;
- left > 0 && res == 0;
- addr += sizeof(data), left -= sizeof(data) - bytes) {
-
- bytes = addr & (sizeof(data) - 1);
- addr &= ~(sizeof(data) - 1);
-
- /* combine source and destination data so can program
- * an entire word of 16 or 32 bits
- */
- for (i = 0; i < sizeof(data); i++) {
- data <<= 8;
- if (i < bytes || i - bytes >= left )
- data += *((uchar *)addr + i);
- else
- data += *src++;
- }
-
- res = write_word(info, (FPWV *)addr, data);
- }
-
- return (res);
-}
-
-static int write_word (flash_info_t *info, FPWV *dest, FPW data)
-{
- int res = 0; /* result, assume success */
- FUNCPTR_WR absEntry;
- int flag;
-
- /* Check if Flash is (sufficiently) erased */
- if ((*dest & data) != data) {
- return (2);
- }
-
- if (info->start[0] != PHYS_FLASH_1)
- {
- return (3);
- }
-
- load_cmd(IN_RAM_CMD_WRITE);
- absEntry = (FUNCPTR_WR)FLASH_WRITE_CMD;
-
- flag = disable_interrupts();
- absEntry(FLASH29_CMD_PROGRAM,dest,data);
- if (flag) enable_interrupts();
-
- udelay(100);
-
- flag = disable_interrupts();
- absEntry(FLASH29_CMD_READ_RESET,0,0);
- if (flag) enable_interrupts();
-
- return (res);
-}