summaryrefslogtreecommitdiff
path: root/board/esd/pf5200/flash.c
diff options
context:
space:
mode:
Diffstat (limited to 'board/esd/pf5200/flash.c')
-rw-r--r--board/esd/pf5200/flash.c445
1 files changed, 0 insertions, 445 deletions
diff --git a/board/esd/pf5200/flash.c b/board/esd/pf5200/flash.c
deleted file mode 100644
index e1b13bf..0000000
--- a/board/esd/pf5200/flash.c
+++ /dev/null
@@ -1,445 +0,0 @@
-/*
- * (C) Copyright 2003
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
-
-typedef unsigned short FLASH_PORT_WIDTH;
-typedef volatile unsigned short FLASH_PORT_WIDTHV;
-
-#define FLASH_ID_MASK 0x00FF
-
-#define FPW FLASH_PORT_WIDTH
-#define FPWV FLASH_PORT_WIDTHV
-
-#define FLASH_CYCLE1 0x0555
-#define FLASH_CYCLE2 0x0aaa
-#define FLASH_ID1 0x00
-#define FLASH_ID2 0x01
-#define FLASH_ID3 0x0E
-#define FLASH_ID4 0x0F
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-static ulong flash_get_size(FPWV * addr, flash_info_t * info);
-static void flash_reset(flash_info_t * info);
-static int write_word_amd(flash_info_t * info, FPWV * dest, FPW data);
-static flash_info_t *flash_get_info(ulong base);
-
-/*-----------------------------------------------------------------------
- * flash_init()
- *
- * sets up flash_info and returns size of FLASH (bytes)
- */
-unsigned long flash_init(void)
-{
- unsigned long size = 0;
- int i = 0;
- extern void flash_preinit(void);
- extern void flash_afterinit(uint, ulong, ulong);
-
- ulong flashbase = CONFIG_SYS_FLASH_BASE;
-
- flash_preinit();
-
- /* There is only ONE FLASH device */
- memset(&flash_info[i], 0, sizeof(flash_info_t));
- flash_info[i].size = flash_get_size((FPW *) flashbase, &flash_info[i]);
- 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
-
- flash_afterinit(i, flash_info[i].start[0], flash_info[i].size);
- return size ? size : 1;
-}
-
-/*-----------------------------------------------------------------------
- */
-static void flash_reset(flash_info_t * info) {
- FPWV *base = (FPWV *) (info->start[0]);
-
- /* Put FLASH back in read mode */
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
- *base = (FPW) 0x00FF00FF; /* Intel Read Mode */
- } else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD) {
- *base = (FPW) 0x00F000F0; /* AMD Read Mode */
- }
-}
-
-/*-----------------------------------------------------------------------
- */
-
-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->size) && (info->start[0] <= base)
- && (base <= info->start[0] + info->size - 1)) {
- break;
- }
- }
- return (i == CONFIG_SYS_MAX_FLASH_BANKS ? 0 : info);
-}
-
-/*-----------------------------------------------------------------------
- */
-
-void flash_print_info(flash_info_t * info) {
- int i;
- char *fmt;
-
- 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;
- default:
- printf("Unknown Vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_AMLV256U:
- fmt = "29LV256M (256 Mbit)\n";
- break;
- default:
- fmt = "Unknown Chip Type\n";
- break;
- }
-
- printf(fmt);
- 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) {
- ulong size;
- int erased;
- ulong *flash = (unsigned long *)info->start[i];
-
- if ((i % 5) == 0) {
- printf("\n ");
- }
-
- /*
- * Check if whole sector is erased
- */
- size =
- (i !=
- (info->sector_count - 1)) ? (info->start[i + 1] -
- info->start[i]) >> 2 : (info->
- start
- [0] +
- info->
- size -
- info->
- start
- [i])
- >> 2;
-
- for (flash = (unsigned long *)info->start[i], erased = 1;
- (flash != (unsigned long *)info->start[i] + size)
- && erased; flash++) {
- erased = *flash == ~0x0UL;
- }
- printf(" %08lX %s %s", info->start[i], erased ? "E" : " ",
- info->protect[i] ? "(RO)" : " ");
- }
-
- printf("\n");
-}
-
-/*-----------------------------------------------------------------------
- */
-
-/*
- * The following code cannot be run from FLASH!
- */
-
-ulong flash_get_size(FPWV * addr, flash_info_t * info) {
- int i;
-
- /* Write auto select command: read Manufacturer ID */
- /* Write auto select command sequence and test FLASH answer */
- addr[FLASH_CYCLE1] = (FPW) 0x00AA00AA; /* for AMD, Intel ignores this */
- addr[FLASH_CYCLE2] = (FPW) 0x00550055; /* for AMD, Intel ignores this */
- addr[FLASH_CYCLE1] = (FPW) 0x00900090; /* selects Intel or AMD */
-
- /* The manufacturer codes are only 1 byte, so just use 1 byte. */
- /* This works for any bus width and any FLASH device width. */
- udelay(100);
- switch (addr[FLASH_ID1] & 0x00ff) {
- case (uchar) AMD_MANUFACT:
- info->flash_id = FLASH_MAN_AMD;
- break;
- default:
- printf("unknown vendor=%x ", addr[FLASH_ID1] & 0xff);
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0;
- break;
- }
-
- /* Check 16 bits or 32 bits of ID so work on 32 or 16 bit bus. */
- if (info->flash_id != FLASH_UNKNOWN) {
- switch ((FPW) addr[FLASH_ID2]) {
- case (FPW) AMD_ID_MIRROR:
- /* MIRROR BIT FLASH, read more ID bytes */
- if ((FPW) addr[FLASH_ID3] == (FPW) AMD_ID_LV256U_2
- && (FPW) addr[FLASH_ID4] == (FPW) AMD_ID_LV256U_3) {
- /* attention: only the first 16 MB will be used in u-boot */
- info->flash_id += FLASH_AMLV256U;
- info->sector_count = 512;
- info->size = 0x02000000;
- for (i = 0; i < info->sector_count; i++) {
- info->start[i] =
- (ulong) addr + 0x10000 * i;
- }
- break;
- }
- /* fall thru to here ! */
- default:
- printf("unknown AMD device=%x %x %x",
- (FPW) addr[FLASH_ID2], (FPW) addr[FLASH_ID3],
- (FPW) addr[FLASH_ID4]);
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0x800000;
- break;
- }
-
- /* Put FLASH back in read mode */
- flash_reset(info);
- }
- return (info->size);
-}
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase(flash_info_t * info, int s_first, int s_last) {
- FPWV *addr;
- int flag, prot, sect;
- int intel = (info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL;
- ulong start, now, last;
- int rcode = 0;
-
- 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_AMLV256U:
- 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 && rcode == 0; 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]);
- if (intel) {
- *addr = (FPW) 0x00500050; /* clear status register */
- *addr = (FPW) 0x00200020; /* erase setup */
- *addr = (FPW) 0x00D000D0; /* erase confirm */
- } else {
- /* must be AMD style if not Intel */
- FPWV *base; /* first address in bank */
-
- base = (FPWV *) (info->start[0]);
- base[FLASH_CYCLE1] = (FPW) 0x00AA00AA; /* unlock */
- base[FLASH_CYCLE2] = (FPW) 0x00550055; /* unlock */
- base[FLASH_CYCLE1] = (FPW) 0x00800080; /* erase mode */
- base[FLASH_CYCLE1] = (FPW) 0x00AA00AA; /* unlock */
- base[FLASH_CYCLE2] = (FPW) 0x00550055; /* unlock */
- *addr = (FPW) 0x00300030; /* erase sector */
- }
-
- /* re-enable interrupts if necessary */
- if (flag) {
- enable_interrupts();
- }
- start = get_timer(0);
-
- /* wait at least 50us for AMD, 80us for Intel. */
- /* Let's wait 1 ms. */
- udelay(1000);
-
- while ((*addr & (FPW) 0x00800080) != (FPW) 0x00800080) {
- if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
- printf("Timeout\n");
- if (intel) {
- /* suspend erase */
- *addr = (FPW) 0x00B000B0;
- }
- flash_reset(info); /* reset to read mode */
- rcode = 1; /* failed */
- break;
- }
- /* show that we're waiting */
- if ((get_timer(last)) > CONFIG_SYS_HZ) {
- /* every second */
- putc('.');
- last = get_timer(0);
- }
- }
- /* show that we're waiting */
- if ((get_timer(last)) > CONFIG_SYS_HZ) {
- /* every second */
- putc('.');
- last = get_timer(0);
- }
- flash_reset(info); /* reset to read mode */
- }
- printf(" done\n");
- return (rcode);
-}
-
-/*-----------------------------------------------------------------------
- * 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++;
- }
-
- /* write one word to the flash */
- switch (info->flash_id & FLASH_VENDMASK) {
- case FLASH_MAN_AMD:
- res = write_word_amd(info, (FPWV *) addr, data);
- break;
- default:
- /* unknown flash type, error! */
- printf("missing or unknown FLASH type\n");
- res = 1; /* not really a timeout, but gives error */
- break;
- }
- }
- return (res);
-}
-
-/*-----------------------------------------------------------------------
- * Write a word to Flash for AMD FLASH
- * A word is 16 or 32 bits, whichever the bus width of the flash bank
- * (not an individual chip) is.
- *
- * returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- */
-static int write_word_amd(flash_info_t * info, FPWV * dest, FPW data) {
- ulong start;
- int flag;
- int res = 0; /* result, assume success */
- FPWV *base; /* first address in flash bank */
-
- /* Check if Flash is (sufficiently) erased */
- if ((*dest & data) != data) {
- return (2);
- }
-
- base = (FPWV *) (info->start[0]);
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- base[FLASH_CYCLE1] = (FPW) 0x00AA00AA; /* unlock */
- base[FLASH_CYCLE2] = (FPW) 0x00550055; /* unlock */
- base[FLASH_CYCLE1] = (FPW) 0x00A000A0; /* selects program mode */
-
- *dest = data; /* start programming the data */
-
- /* re-enable interrupts if necessary */
- if (flag) {
- enable_interrupts();
- }
- start = get_timer(0);
-
- /* data polling for D7 */
- while (res == 0
- && (*dest & (FPW) 0x00800080) != (data & (FPW) 0x00800080)) {
- if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
- *dest = (FPW) 0x00F000F0; /* reset bank */
- res = 1;
- }
- }
- return (res);
-}