--- /dev/null
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * Hacked for the Hymod board by Murray.Jensen@csiro.au, 20-Oct-00
+ */
+
+#include <common.h>
+#include <mpc8260.h>
+#include <board/hymod/flash.h>
+
+flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+/*-----------------------------------------------------------------------
+ * Protection Flags:
+ */
+#define FLAG_PROTECT_SET 0x01
+#define FLAG_PROTECT_CLEAR 0x02
+
+/*-----------------------------------------------------------------------
+ */
+
+/*
+ * probe for flash bank at address "base" and store info about it
+ * in the flash_info entry "fip". Fatal error if nothing there.
+ */
+static void
+bank_probe (flash_info_t *fip, volatile bank_addr_t base)
+{
+ volatile bank_addr_t addr;
+ bank_word_t word;
+ int i;
+
+ /* reset the flash */
+ *base = BANK_CMD_RST;
+
+ /* put flash into read id mode */
+ *base = BANK_CMD_RD_ID;
+
+ /* check the manufacturer id - must be intel */
+ word = *BANK_REG_MAN_CODE (base);
+ if (word != BANK_FILL_WORD (INTEL_MANUFACT&0xff))
+ panic ("\nbad manufacturer's code (0x%08lx) at addr 0x%08lx",
+ (unsigned long)word, (unsigned long)base);
+
+ /* check the device id */
+ word = *BANK_REG_DEV_CODE (base);
+ switch (word) {
+
+ case BANK_FILL_WORD (INTEL_ID_28F320J5&0xff):
+ fip->flash_id = FLASH_MAN_INTEL | FLASH_28F320J5;
+ fip->sector_count = 32;
+ break;
+
+ case BANK_FILL_WORD (INTEL_ID_28F640J5&0xff):
+ fip->flash_id = FLASH_MAN_INTEL | FLASH_28F640J5;
+ fip->sector_count = 64;
+ break;
+
+ case BANK_FILL_WORD (INTEL_ID_28F320J3A&0xff):
+ fip->flash_id = FLASH_MAN_INTEL | FLASH_28F320J3A;
+ fip->sector_count = 32;
+ break;
+
+ case BANK_FILL_WORD (INTEL_ID_28F640J3A&0xff):
+ fip->flash_id = FLASH_MAN_INTEL | FLASH_28F640J3A;
+ fip->sector_count = 64;
+ break;
+
+ case BANK_FILL_WORD (INTEL_ID_28F128J3A&0xff):
+ fip->flash_id = FLASH_MAN_INTEL | FLASH_28F128J3A;
+ fip->sector_count = 128;
+ break;
+
+ default:
+ panic ("\nbad device code (0x%08lx) at addr 0x%08lx",
+ (unsigned long)word, (unsigned long)base);
+ }
+
+ if (fip->sector_count >= CONFIG_SYS_MAX_FLASH_SECT)
+ panic ("\ntoo many sectors (%d) in flash at address 0x%08lx",
+ fip->sector_count, (unsigned long)base);
+
+ addr = base;
+ for (i = 0; i < fip->sector_count; i++) {
+ fip->start[i] = (unsigned long)addr;
+ fip->protect[i] = 0;
+ addr = BANK_ADDR_NEXT_BLK (addr);
+ }
+
+ fip->size = (bank_size_t)addr - (bank_size_t)base;
+
+ /* reset the flash */
+ *base = BANK_CMD_RST;
+}
+
+static void
+bank_reset (flash_info_t *info, int sect)
+{
+ volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
+
+#ifdef FLASH_DEBUG
+ printf ("writing reset cmd to addr 0x%08lx\n", (unsigned long)addr);
+#endif
+
+ *addr = BANK_CMD_RST;
+}
+
+static void
+bank_erase_init (flash_info_t *info, int sect)
+{
+ volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
+ int flag;
+
+#ifdef FLASH_DEBUG
+ printf ("erasing sector %d, addr = 0x%08lx\n",
+ sect, (unsigned long)addr);
+#endif
+
+ /* Disable intrs which might cause a timeout here */
+ flag = disable_interrupts ();
+
+#ifdef FLASH_DEBUG
+ printf ("writing erase cmd to addr 0x%08lx\n", (unsigned long)addr);
+#endif
+ *addr = BANK_CMD_ERASE1;
+ *addr = BANK_CMD_ERASE2;
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts ();
+}
+
+static int
+bank_erase_poll (flash_info_t *info, int sect)
+{
+ volatile bank_addr_t addr = (bank_addr_t)info->start[sect];
+ bank_word_t stat = *addr;
+
+#ifdef FLASH_DEBUG
+ printf ("checking status at addr 0x%08lx [0x%08lx]\n",
+ (unsigned long)addr, (unsigned long)stat);
+#endif
+
+ if ((stat & BANK_STAT_RDY) == BANK_STAT_RDY) {
+ if ((stat & BANK_STAT_ERR) != 0) {
+ printf ("failed on sector %d [0x%08lx] at "
+ "address 0x%08lx\n", sect,
+ (unsigned long)stat, (unsigned long)addr);
+ *addr = BANK_CMD_CLR_STAT;
+ return (-1);
+ }
+ else
+ return (1);
+ }
+ else
+ return (0);
+}
+
+static int
+bank_write_word (volatile bank_addr_t addr, bank_word_t value)
+{
+ bank_word_t stat;
+ ulong start;
+ int flag, retval;
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts ();
+
+ *addr = BANK_CMD_PROG;
+
+ *addr = value;
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts ();
+
+ retval = 0;
+
+ /* data polling for D7 */
+ start = get_timer (0);
+ do {
+ if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
+ retval = 1;
+ goto done;
+ }
+ stat = *addr;
+ } while ((stat & BANK_STAT_RDY) != BANK_STAT_RDY);
+
+ if ((stat & BANK_STAT_ERR) != 0) {
+ printf ("flash program failed [0x%08lx] at address 0x%08lx\n",
+ (unsigned long)stat, (unsigned long)addr);
+ *addr = BANK_CMD_CLR_STAT;
+ retval = 3;
+ }
+
+done:
+ /* reset to read mode */
+ *addr = BANK_CMD_RST;
+
+ return (retval);
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+unsigned long
+flash_init (void)
+{
+ int i;
+
+ /* Init: no FLASHes known */
+ for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
+ flash_info[i].flash_id = FLASH_UNKNOWN;
+ }
+
+ bank_probe (&flash_info[0], (bank_addr_t)CONFIG_SYS_FLASH_BASE);
+
+ /*
+ * protect monitor and environment sectors
+ */
+
+#if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
+ (void)flash_protect (FLAG_PROTECT_SET,
+ CONFIG_SYS_MONITOR_BASE,
+ CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
+ &flash_info[0]);
+#endif
+
+#if defined(CONFIG_SYS_FLASH_ENV_ADDR)
+ (void)flash_protect (FLAG_PROTECT_SET,
+ CONFIG_SYS_FLASH_ENV_ADDR,
+#if defined(CONFIG_SYS_FLASH_ENV_BUF)
+ CONFIG_SYS_FLASH_ENV_ADDR + CONFIG_SYS_FLASH_ENV_BUF - 1,
+#else
+ CONFIG_SYS_FLASH_ENV_ADDR + CONFIG_SYS_FLASH_ENV_SIZE - 1,
+#endif
+ &flash_info[0]);
+#endif
+
+ return flash_info[0].size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void
+flash_print_info (flash_info_t *info)
+{
+ int i;
+
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf ("missing or unknown FLASH type\n");
+ return;
+ }
+
+ switch (info->flash_id & FLASH_VENDMASK) {
+ case FLASH_MAN_INTEL: printf ("INTEL "); break;
+ default: printf ("Unknown Vendor "); break;
+ }
+
+ switch (info->flash_id & FLASH_TYPEMASK) {
+ case FLASH_28F320J5: printf ("28F320J5 (32 Mbit, 2 x 16bit)\n");
+ break;
+ case FLASH_28F640J5: printf ("28F640J5 (64 Mbit, 2 x 16bit)\n");
+ break;
+ case FLASH_28F320J3A: printf ("28F320J3A (32 Mbit, 2 x 16bit)\n");
+ break;
+ case FLASH_28F640J3A: printf ("28F640J3A (64 Mbit, 2 x 16bit)\n");
+ break;
+ case FLASH_28F128J3A: printf ("28F320J3A (128 Mbit, 2 x 16bit)\n");
+ break;
+ default: printf ("Unknown Chip Type\n");
+ 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");
+ return;
+}
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+
+/*-----------------------------------------------------------------------
+ */
+
+int
+flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+ int prot, sect, haderr;
+ ulong start, now, last;
+ int rcode = 0;
+
+#ifdef FLASH_DEBUG
+ printf ("\nflash_erase: erase %d sectors (%d to %d incl.) from\n"
+ " Bank # %d: ", s_last - s_first + 1, s_first, s_last,
+ (info - flash_info) + 1);
+ flash_print_info (info);
+#endif
+
+ 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;
+ }
+
+ prot = 0;
+ for (sect = s_first; sect <= s_last; ++sect) {
+ if (info->protect[sect]) {
+ prot++;
+ }
+ }
+
+ if (prot) {
+ printf ("- Warning: %d protected sector%s will not be erased\n",
+ prot, (prot > 1 ? "s" : ""));
+ }
+
+ start = get_timer (0);
+ last = 0;
+ haderr = 0;
+
+ for (sect = s_first; sect <= s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ ulong estart;
+ int sectdone;
+
+ bank_erase_init (info, sect);
+
+ /* wait at least 80us - let's wait 1 ms */
+ udelay (1000);
+
+ estart = get_timer (start);
+
+ do {
+ now = get_timer (start);
+
+ if (now - estart > CONFIG_SYS_FLASH_ERASE_TOUT) {
+ printf ("Timeout (sect %d)\n", sect);
+ haderr = 1;
+ rcode = 1;
+ break;
+ }
+
+#ifndef FLASH_DEBUG
+ /* show that we're waiting */
+ if ((now - last) > 1000) { /* every second */
+ putc ('.');
+ last = now;
+ }
+#endif
+
+ sectdone = bank_erase_poll (info, sect);
+
+ if (sectdone < 0) {
+ haderr = 1;
+ rcode = 1;
+ break;
+ }
+
+ } while (!sectdone);
+
+ if (haderr)
+ break;
+ }
+ }
+
+ if (haderr > 0)
+ printf (" failed\n");
+ else
+ printf (" done\n");
+
+ /* reset to read mode */
+ for (sect = s_first; sect <= s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ bank_reset (info, sect);
+ }
+ }
+ return rcode;
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word to Flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ * 3 - Program failed
+ */
+static int
+write_word (flash_info_t *info, ulong dest, ulong data)
+{
+ /* Check if Flash is (sufficiently) erased */
+ if ((*(ulong *)dest & data) != data)
+ return (2);
+
+ return (bank_write_word ((bank_addr_t)dest, (bank_word_t)data));
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ * 3 - Program failed
+ */
+
+int
+write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+ ulong cp, wp, data;
+ int i, l, 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);
+ }
+ for (; i<4 && cnt>0; ++i) {
+ data = (data << 8) | *src++;
+ --cnt;
+ ++cp;
+ }
+ for (; cnt==0 && i<4; ++i, ++cp) {
+ data = (data << 8) | (*(uchar *)cp);
+ }
+
+ if ((rc = write_word (info, wp, data)) != 0) {
+ return (rc);
+ }
+ wp += 4;
+ }
+
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 4) {
+ data = 0;
+ for (i=0; i<4; ++i) {
+ data = (data << 8) | *src++;
+ }
+ if ((rc = write_word (info, wp, data)) != 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 = (data << 8) | *src++;
+ --cnt;
+ }
+ for (; i<4; ++i, ++cp) {
+ data = (data << 8) | (*(uchar *)cp);
+ }
+
+ return (write_word (info, wp, data));
+}
+
+/*-----------------------------------------------------------------------
+ */
Code Review / kvmfornfv.git / blobdiff