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-rw-r--r--board/idmr/flash.c342
1 files changed, 0 insertions, 342 deletions
diff --git a/board/idmr/flash.c b/board/idmr/flash.c
deleted file mode 100644
index 52eb105..0000000
--- a/board/idmr/flash.c
+++ /dev/null
@@ -1,342 +0,0 @@
-/*
- * (C) Copyright 2000-2006
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-
-#define PHYS_FLASH_1 CONFIG_SYS_FLASH_BASE
-#define FLASH_BANK_SIZE 0x800000
-#define EN29LV640 0x227e227e
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-
-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 (EN29LV640 & FLASH_TYPEMASK):
- printf ("EN29LV640 (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:
- return;
-}
-
-
-unsigned long 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) |
- (EN29LV640 & 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 to many flash banks!\n");
-
- for (j = 0; j < flash_info[i].sector_count; j++) {
- flash_info[i].start[j] = flashbase + 0x10000 * j;
- }
- size += flash_info[i].size;
- }
-
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_SYS_FLASH_BASE,
- CONFIG_SYS_FLASH_BASE + 0x2ffff, &flash_info[0]);
-
- return size;
-}
-
-
-#define CMD_READ_ARRAY 0x00F0
-#define CMD_UNLOCK1 0x00AA
-#define CMD_UNLOCK2 0x0055
-#define CMD_ERASE_SETUP 0x0080
-#define CMD_ERASE_CONFIRM 0x0030
-#define CMD_PROGRAM 0x00A0
-#define CMD_UNLOCK_BYPASS 0x0020
-
-#define MEM_FLASH_ADDR1 (*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x00000555<<1)))
-#define MEM_FLASH_ADDR2 (*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x000002AA<<1)))
-
-#define BIT_ERASE_DONE 0x0080
-#define BIT_RDY_MASK 0x0080
-#define BIT_PROGRAM_ERROR 0x0020
-#define BIT_TIMEOUT 0x80000000 /* our flag */
-
-#define READY 1
-#define ERR 2
-#define TMO 4
-
-
-int flash_erase (flash_info_t * info, int s_first, int s_last)
-{
- ulong result;
- int iflag, prot, sect;
- int rc = ERR_OK;
- int chip1;
- 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.
- */
- iflag = disable_interrupts ();
-
- printf ("\n");
-
- /* 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 */
- volatile u16 *addr =
- (volatile u16 *) (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 = 0;
-
- do {
- result = *addr;
-
- /* check timeout */
- if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT * CONFIG_SYS_HZ / 1000) {
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
- chip1 = TMO;
- break;
- }
-
- if (!chip1
- && (result & 0xFFFF) & BIT_ERASE_DONE)
- chip1 = READY;
-
- } while (!chip1);
-
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
-
- if (chip1 == 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 */
- printf("Waiting 10 ms...");
- udelay (10000);
-
-/* for (i = 0; i < 10 * 1000 * 1000; ++i)
- asm(" nop");
-*/
-
- printf("done\n");
- if (iflag)
- enable_interrupts ();
-
-
- return rc;
-}
-
-static int write_word (flash_info_t * info, ulong dest, ulong data)
-{
- volatile u16 *addr = (volatile u16 *) dest;
- ulong result;
- int rc = ERR_OK;
- int iflag;
- int chip1;
- 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.
- */
- iflag = disable_interrupts ();
-
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- MEM_FLASH_ADDR1 = CMD_PROGRAM;
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- start = get_timer(0);
-
- /* wait until flash is ready */
- chip1 = 0;
- do {
- result = *addr;
-
- /* check timeout */
- if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT * CONFIG_SYS_HZ / 1000) {
- chip1 = ERR | TMO;
- break;
- }
- if (!chip1 && ((result & 0x80) == (data & 0x80)))
- chip1 = READY;
-
- } while (!chip1);
-
- *addr = CMD_READ_ARRAY;
-
- if (chip1 == ERR || *addr != data)
- rc = ERR_PROG_ERROR;
-
- if (iflag)
- enable_interrupts ();
-
- return rc;
-}
-
-
-int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
-{
- ulong wp, data;
- int rc;
-
- if (addr & 1) {
- printf ("unaligned destination not supported\n");
- return ERR_ALIGN;
- }
-
-#if 0
- if (cnt & 1) {
- printf ("odd transfer sizes not supported\n");
- return ERR_ALIGN;
- }
-#endif
-
- wp = addr;
-
- if (addr & 1) {
- data = (*((volatile u8 *) addr) << 8) | *((volatile u8 *)
- src);
- if ((rc = write_word (info, wp - 1, data)) != 0) {
- return (rc);
- }
- src += 1;
- wp += 1;
- cnt -= 1;
- }
-
- while (cnt >= 2) {
- data = *((volatile u16 *) src);
- if ((rc = write_word (info, wp, data)) != 0) {
- return (rc);
- }
- src += 2;
- wp += 2;
- cnt -= 2;
- }
-
- if (cnt == 1) {
- data = (*((volatile u8 *) src) << 8) |
- *((volatile u8 *) (wp + 1));
- if ((rc = write_word (info, wp, data)) != 0) {
- return (rc);
- }
- src += 1;
- wp += 1;
- cnt -= 1;
- }
-
- return ERR_OK;
-}
generated by cgit v1.1 at 2024-12-02 15:15:20 +0000