--- /dev/null
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include "flash.h"
+#include <linux/compiler.h>
+
+flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+#if defined(CONFIG_ENV_IS_IN_FLASH)
+# ifndef CONFIG_ENV_ADDR
+# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
+# endif
+# ifndef CONFIG_ENV_SIZE
+# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
+# endif
+# ifndef CONFIG_ENV_SECT_SIZE
+# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
+# endif
+#endif
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static int write_word (flash_info_t *info, ulong dest, ulong data);
+
+/*-----------------------------------------------------------------------
+ */
+
+
+#if defined(CONFIG_CMA302)
+
+/*
+ * probe for the existence of flash at address "addr"
+ * 0 = yes, 1 = bad Manufacturer's Id, 2 = bad Device Id
+ */
+static int
+c302f_probe_word(c302f_addr_t addr)
+{
+ /* reset the flash */
+ *addr = C302F_BNK_CMD_RST;
+
+ /* check the manufacturer id */
+ *addr = C302F_BNK_CMD_RD_ID;
+ if (*C302F_BNK_ADDR_MAN(addr) != C302F_BNK_RD_ID_MAN)
+ return 1;
+
+ /* check the device id */
+ *addr = C302F_BNK_CMD_RD_ID;
+ if (*C302F_BNK_ADDR_DEV(addr) != C302F_BNK_RD_ID_DEV)
+ return 2;
+
+#ifdef FLASH_DEBUG
+ {
+ int i;
+
+ printf("\nMaster Lock Config = 0x%08lx\n",
+ *C302F_BNK_ADDR_CFGM(addr));
+ for (i = 0; i < C302F_BNK_NBLOCKS; i++)
+ printf("Block %2d Lock Config = 0x%08lx\n",
+ i, *C302F_BNK_ADDR_CFG(i, addr));
+ }
+#endif
+
+ /* reset the flash again */
+ *addr = C302F_BNK_CMD_RST;
+
+ return 0;
+}
+
+/*
+ * probe for Cogent CMA302 flash module at address "base" and store
+ * info for any found into flash_info entry "fip". Must find at least
+ * one bank.
+ */
+static void
+c302f_probe(flash_info_t *fip, c302f_addr_t base)
+{
+ c302f_addr_t addr, eaddr;
+ int nbanks;
+
+ fip->size = 0L;
+ fip->sector_count = 0;
+
+ addr = base;
+ eaddr = C302F_BNK_ADDR_BASE(addr, C302F_MAX_BANKS);
+ nbanks = 0;
+
+ while (addr < eaddr) {
+ c302f_addr_t addrw, eaddrw, addrb;
+ int i, osc, nsc;
+
+ addrw = addr;
+ eaddrw = C302F_BNK_ADDR_NEXT_WORD(addrw);
+
+ while (addrw < eaddrw)
+ if (c302f_probe_word(addrw++) != 0)
+ goto out;
+
+ /* bank exists - append info for this bank to *fip */
+ fip->flash_id = FLASH_MAN_INTEL|FLASH_28F008S5;
+ fip->size += C302F_BNK_SIZE;
+ osc = fip->sector_count;
+ fip->sector_count += C302F_BNK_NBLOCKS;
+ if ((nsc = fip->sector_count) >= CONFIG_SYS_MAX_FLASH_SECT)
+ panic("Too many sectors in flash at address 0x%08lx\n",
+ (unsigned long)base);
+
+ addrb = addr;
+ for (i = osc; i < nsc; i++) {
+ fip->start[i] = (ulong)addrb;
+ fip->protect[i] = 0;
+ addrb = C302F_BNK_ADDR_NEXT_BLK(addrb);
+ }
+
+ addr = C302F_BNK_ADDR_NEXT_BNK(addr);
+ nbanks++;
+ }
+
+out:
+ if (nbanks == 0)
+ panic("ERROR: no flash found at address 0x%08lx\n",
+ (unsigned long)base);
+}
+
+static void
+c302f_reset(flash_info_t *info, int sect)
+{
+ c302f_addr_t addrw, eaddrw;
+
+ addrw = (c302f_addr_t)info->start[sect];
+ eaddrw = C302F_BNK_ADDR_NEXT_WORD(addrw);
+
+ while (addrw < eaddrw) {
+#ifdef FLASH_DEBUG
+ printf(" writing reset cmd to addr 0x%08lx\n",
+ (unsigned long)addrw);
+#endif
+ *addrw = C302F_BNK_CMD_RST;
+ addrw++;
+ }
+}
+
+static void
+c302f_erase_init(flash_info_t *info, int sect)
+{
+ c302f_addr_t addrw, saddrw, eaddrw;
+ int flag;
+
+#ifdef FLASH_DEBUG
+ printf("0x%08lx C302F_BNK_CMD_PROG\n", C302F_BNK_CMD_PROG);
+ printf("0x%08lx C302F_BNK_CMD_ERASE1\n", C302F_BNK_CMD_ERASE1);
+ printf("0x%08lx C302F_BNK_CMD_ERASE2\n", C302F_BNK_CMD_ERASE2);
+ printf("0x%08lx C302F_BNK_CMD_CLR_STAT\n", C302F_BNK_CMD_CLR_STAT);
+ printf("0x%08lx C302F_BNK_CMD_RST\n", C302F_BNK_CMD_RST);
+ printf("0x%08lx C302F_BNK_STAT_RDY\n", C302F_BNK_STAT_RDY);
+ printf("0x%08lx C302F_BNK_STAT_ERR\n", C302F_BNK_STAT_ERR);
+#endif
+
+ saddrw = (c302f_addr_t)info->start[sect];
+ eaddrw = C302F_BNK_ADDR_NEXT_WORD(saddrw);
+
+#ifdef FLASH_DEBUG
+ printf("erasing sector %d, start addr = 0x%08lx "
+ "(bank next word addr = 0x%08lx)\n", sect,
+ (unsigned long)saddrw, (unsigned long)eaddrw);
+#endif
+
+ /* Disable intrs which might cause a timeout here */
+ flag = disable_interrupts();
+
+ for (addrw = saddrw; addrw < eaddrw; addrw++) {
+#ifdef FLASH_DEBUG
+ printf(" writing erase cmd to addr 0x%08lx\n",
+ (unsigned long)addrw);
+#endif
+ *addrw = C302F_BNK_CMD_ERASE1;
+ *addrw = C302F_BNK_CMD_ERASE2;
+ }
+
+ /* re-enable interrupts if necessary */
+ if (flag)
+ enable_interrupts();
+}
+
+static int
+c302f_erase_poll(flash_info_t *info, int sect)
+{
+ c302f_addr_t addrw, saddrw, eaddrw;
+ int sectdone, haderr;
+
+ saddrw = (c302f_addr_t)info->start[sect];
+ eaddrw = C302F_BNK_ADDR_NEXT_WORD(saddrw);
+
+ sectdone = 1;
+ haderr = 0;
+
+ for (addrw = saddrw; addrw < eaddrw; addrw++) {
+ c302f_word_t stat = *addrw;
+
+#ifdef FLASH_DEBUG
+ printf(" checking status at addr "
+ "0x%08lx [0x%08lx]\n",
+ (unsigned long)addrw, stat);
+#endif
+ if ((stat & C302F_BNK_STAT_RDY) != C302F_BNK_STAT_RDY)
+ sectdone = 0;
+ else if ((stat & C302F_BNK_STAT_ERR) != 0) {
+ printf(" failed on sector %d "
+ "(stat = 0x%08lx) at "
+ "address 0x%08lx\n",
+ sect, stat,
+ (unsigned long)addrw);
+ *addrw = C302F_BNK_CMD_CLR_STAT;
+ haderr = 1;
+ }
+ }
+
+ if (haderr)
+ return (-1);
+ else
+ return (sectdone);
+}
+
+static int
+c302f_write_word(c302f_addr_t addr, c302f_word_t value)
+{
+ c302f_word_t stat;
+ ulong start;
+ int flag, retval;
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ *addr = C302F_BNK_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 & C302F_BNK_STAT_RDY) != C302F_BNK_STAT_RDY);
+
+ if ((stat & C302F_BNK_STAT_ERR) != 0) {
+ printf("flash program failed (stat = 0x%08lx) "
+ "at address 0x%08lx\n", (ulong)stat, (ulong)addr);
+ *addr = C302F_BNK_CMD_CLR_STAT;
+ retval = 3;
+ }
+
+done:
+ /* reset to read mode */
+ *addr = C302F_BNK_CMD_RST;
+
+ return (retval);
+}
+
+#endif /* CONFIG_CMA302 */
+
+unsigned long
+flash_init(void)
+{
+ unsigned long total;
+ int i;
+ __maybe_unused flash_info_t *fip;
+
+ /* Init: no FLASHes known */
+ for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
+ flash_info[i].flash_id = FLASH_UNKNOWN;
+ }
+
+ fip = &flash_info[0];
+ total = 0L;
+
+#if defined(CONFIG_CMA302)
+ c302f_probe(fip, (c302f_addr_t)CONFIG_SYS_FLASH_BASE);
+ total += fip->size;
+ fip++;
+#endif
+
+#if (CMA_MB_CAPS & CMA_MB_CAP_FLASH)
+ /* not yet ...
+ cmbf_probe(fip, (cmbf_addr_t)CMA_MB_FLASH_BASE);
+ total += fip->size;
+ fip++;
+ */
+#endif
+
+ /*
+ * protect monitor and environment sectors
+ */
+
+#if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
+ flash_protect(FLAG_PROTECT_SET,
+ CONFIG_SYS_MONITOR_BASE,
+ CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
+ &flash_info[0]);
+#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_SECT_SIZE-1,
+ &flash_info[0]);
+#endif
+ return total;
+}
+
+/*-----------------------------------------------------------------------
+ */
+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_28F008S5: printf ("28F008S5\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 % 4) == 0)
+ printf ("\n ");
+ printf (" %2d - %08lX%s", i,
+ 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;
+ void (*erase_init)(flash_info_t *, int);
+ int (*erase_poll)(flash_info_t *, int);
+ void (*reset)(flash_info_t *, int);
+ 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;
+ }
+
+ switch (info->flash_id) {
+
+#if defined(CONFIG_CMA302)
+ case FLASH_MAN_INTEL|FLASH_28F008S5:
+ erase_init = c302f_erase_init;
+ erase_poll = c302f_erase_poll;
+ reset = c302f_reset;
+ break;
+#endif
+
+#if (CMA_MB_CAPS & CMA_MB_CAP_FLASH)
+ case FLASH_MAN_INTEL|FLASH_28F800_B:
+ case FLASH_MAN_AMD|FLASH_AM29F800B:
+ /* not yet ...
+ erase_init = cmbf_erase_init;
+ erase_poll = cmbf_erase_poll;
+ reset = cmbf_reset;
+ break;
+ */
+#endif
+
+ default:
+ printf ("Flash type %08lx not supported - 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 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;
+
+ (*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;
+ break;
+ }
+
+#ifndef FLASH_DEBUG
+ /* show that we're waiting */
+ if ((now - last) > 1000) { /* every second */
+ putc ('.');
+ last = now;
+ }
+#endif
+
+ sectdone = (*erase_poll)(info, sect);
+
+ if (sectdone < 0) {
+ haderr = 1;
+ break;
+ }
+
+ } while (!sectdone);
+
+ if (haderr)
+ break;
+ }
+ }
+
+ if (haderr > 0) {
+ printf (" failed\n");
+ rcode = 1;
+ }
+ else
+ printf (" done\n");
+
+ /* reset to read mode */
+ for (sect = s_first; sect <= s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ (*reset)(info, sect);
+ }
+ }
+ return rcode;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ * 3 - write error
+ */
+
+int
+write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+ ulong cp, wp, data;
+ int i, l, rc;
+ ulong start, now, last;
+
+ 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
+ */
+ start = get_timer (0);
+ last = 0;
+ 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;
+
+ /* show that we're waiting */
+ now = get_timer(start);
+ if ((now - last) > 1000) { /* every second */
+ putc ('.');
+ last = now;
+ }
+ }
+
+ 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));
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word to Flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ * 3 - write error
+ */
+static int
+write_word(flash_info_t *info, ulong dest, ulong data)
+{
+ int retval;
+
+ /* Check if Flash is (sufficiently) erased */
+ if ((*(ulong *)dest & data) != data) {
+ return (2);
+ }
+
+ switch (info->flash_id) {
+
+#if defined(CONFIG_CMA302)
+ case FLASH_MAN_INTEL|FLASH_28F008S5:
+ retval = c302f_write_word((c302f_addr_t)dest, (c302f_word_t)data);
+ break;
+#endif
+
+#if (CMA_MB_CAPS & CMA_MB_CAP_FLASH)
+ case FLASH_MAN_INTEL|FLASH_28F800_B:
+ case FLASH_MAN_AMD|FLASH_AM29F800B:
+ /* not yet ...
+ retval = cmbf_write_word((cmbf_addr_t)dest, (cmbf_word_t)data);
+ */
+ retval = 3;
+ break;
+#endif
+
+ default:
+ printf ("Flash type %08lx not supported - aborted\n",
+ info->flash_id);
+ retval = 3;
+ break;
+ }
+
+ return (retval);
+}
+
+/*-----------------------------------------------------------------------
+ */
Code Review / kvmfornfv.git / blobdiff