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-rw-r--r--board/etin/debris/flash.c720
1 files changed, 720 insertions, 0 deletions
diff --git a/board/etin/debris/flash.c b/board/etin/debris/flash.c
new file mode 100644
index 0000000..a4100e5
--- /dev/null
+++ b/board/etin/debris/flash.c
@@ -0,0 +1,720 @@
+/*
+ * board/eva/flash.c
+ *
+ * (C) Copyright 2002
+ * Sangmoon Kim, Etin Systems, dogoil@etinsys.com.
+ *
+ * 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/processor.h>
+#include <asm/pci_io.h>
+#include <mpc824x.h>
+
+int (*do_flash_erase)(flash_info_t*, uint32_t, uint32_t);
+int (*write_dword)(flash_info_t*, ulong, uint64_t);
+
+typedef uint64_t cfi_word;
+
+#define cfi_read(flash, addr) *((volatile cfi_word*)(flash->start[0] + addr))
+
+#define cfi_write(flash, val, addr) \
+ move64((cfi_word*)&val, \
+ (cfi_word*)(flash->start[0] + addr))
+
+#define CMD(x) ((((cfi_word)x)<<48)|(((cfi_word)x)<<32)|(((cfi_word)x)<<16)|(((cfi_word)x)))
+
+static void write32(unsigned long addr, uint32_t value)
+{
+ *(volatile uint32_t*)(addr) = value;
+ asm volatile("sync");
+}
+
+static uint32_t read32(unsigned long addr)
+{
+ uint32_t value;
+ value = *(volatile uint32_t*)addr;
+ asm volatile("sync");
+ return value;
+}
+
+static cfi_word cfi_cmd(flash_info_t *flash, uint8_t cmd, uint32_t addr)
+{
+ uint32_t base = flash->start[0];
+ uint32_t val=(cmd << 16) | cmd;
+ addr <<= 3;
+ write32(base + addr, val);
+ return addr;
+}
+
+static uint16_t cfi_read_query(flash_info_t *flash, uint32_t addr)
+{
+ uint32_t base = flash->start[0];
+ addr <<= 3;
+ return (uint16_t)read32(base + addr);
+}
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+static void move64(uint64_t *src, uint64_t *dest)
+{
+ asm volatile("lfd 0, 0(3)\n\t" /* fpr0 = *scr */
+ "stfd 0, 0(4)" /* *dest = fpr0 */
+ : : : "fr0" ); /* Clobbers fr0 */
+ return;
+}
+
+static int cfi_write_dword(flash_info_t *flash, ulong dest, cfi_word data)
+{
+ unsigned long start;
+ cfi_word status = 0;
+
+ status = cfi_read(flash, dest);
+ data &= status;
+
+ cfi_cmd(flash, 0x40, 0);
+ cfi_write(flash, data, dest);
+
+ udelay(10);
+ start = get_timer (0);
+ for(;;) {
+ status = cfi_read(flash, dest);
+ status &= CMD(0x80);
+ if(status == CMD(0x80))
+ break;
+ if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+ cfi_cmd(flash, 0xff, 0);
+ return 1;
+ }
+ udelay(1);
+ }
+ cfi_cmd(flash, 0xff, 0);
+
+ return 0;
+}
+
+static int jedec_write_dword (flash_info_t *flash, ulong dest, cfi_word data)
+{
+ ulong start;
+ cfi_word status = 0;
+
+ status = cfi_read(flash, dest);
+ if(status != CMD(0xffff)) return 2;
+
+ cfi_cmd(flash, 0xaa, 0x555);
+ cfi_cmd(flash, 0x55, 0x2aa);
+ cfi_cmd(flash, 0xa0, 0x555);
+
+ cfi_write(flash, data, dest);
+
+ udelay(10);
+ start = get_timer (0);
+ status = ~data;
+ while(status != data) {
+ if (get_timer(start) > CFG_FLASH_WRITE_TOUT)
+ return 1;
+ status = cfi_read(flash, dest);
+ udelay(1);
+ }
+ return 0;
+}
+
+static __inline__ unsigned long get_msr(void)
+{
+ unsigned long msr;
+ __asm__ __volatile__ ("mfmsr %0" : "=r" (msr) :);
+ return msr;
+}
+
+static __inline__ void set_msr(unsigned long msr)
+{
+ __asm__ __volatile__ ("mtmsr %0" : : "r" (msr));
+}
+
+int write_buff (flash_info_t *flash, uchar *src, ulong addr, ulong cnt)
+{
+ ulong wp;
+ int i, s, l, rc;
+ cfi_word data;
+ uint8_t *t = (uint8_t*)&data;
+ unsigned long base = flash->start[0];
+ uint32_t msr;
+
+ if (flash->flash_id == FLASH_UNKNOWN)
+ return 4;
+
+ if (cnt == 0)
+ return 0;
+
+ addr -= base;
+
+ msr = get_msr();
+ set_msr(msr|MSR_FP);
+
+ wp = (addr & ~7); /* get lower word aligned address */
+
+ if((addr-wp) != 0) {
+ data = cfi_read(flash, wp);
+ s = addr & 7;
+ l = ( cnt < (8-s) ) ? cnt : (8-s);
+ for(i = 0; i < l; i++)
+ t[s+i] = *src++;
+ if ((rc = write_dword(flash, wp, data)) != 0)
+ goto DONE;
+ wp += 8;
+ cnt -= l;
+ }
+
+ while (cnt >= 8) {
+ for (i = 0; i < 8; i++)
+ t[i] = *src++;
+ if ((rc = write_dword(flash, wp, data)) != 0)
+ goto DONE;
+ wp += 8;
+ cnt -= 8;
+ }
+
+ if (cnt == 0) {
+ rc = 0;
+ goto DONE;
+ }
+
+ data = cfi_read(flash, wp);
+ for(i = 0; i < cnt; i++)
+ t[i] = *src++;
+ rc = write_dword(flash, wp, data);
+DONE:
+ set_msr(msr);
+ return rc;
+}
+
+static int cfi_erase_oneblock(flash_info_t *flash, uint32_t sect)
+{
+ int sa;
+ int flag;
+ ulong start, last, now;
+ cfi_word status;
+
+ flag = disable_interrupts();
+
+ sa = (flash->start[sect] - flash->start[0]);
+ write32(flash->start[sect], 0x00200020);
+ write32(flash->start[sect], 0x00d000d0);
+
+ if (flag)
+ enable_interrupts();
+
+ udelay(1000);
+ start = get_timer (0);
+ last = start;
+
+ for (;;) {
+ status = cfi_read(flash, sa);
+ status &= CMD(0x80);
+ if (status == CMD(0x80))
+ break;
+ if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
+ cfi_cmd(flash, 0xff, 0);
+ printf ("Timeout\n");
+ return ERR_TIMOUT;
+ }
+
+ if ((now - last) > 1000) {
+ serial_putc ('.');
+ last = now;
+ }
+ udelay(10);
+ }
+ cfi_cmd(flash, 0xff, 0);
+ return ERR_OK;
+}
+
+static int cfi_erase(flash_info_t *flash, uint32_t s_first, uint32_t s_last)
+{
+ int sect;
+ int rc = ERR_OK;
+
+ for (sect = s_first; sect <= s_last; sect++) {
+ if (flash->protect[sect] == 0) {
+ rc = cfi_erase_oneblock(flash, sect);
+ if (rc != ERR_OK) break;
+ }
+ }
+ printf (" done\n");
+ return rc;
+}
+
+static int jedec_erase(flash_info_t *flash, uint32_t s_first, uint32_t s_last)
+{
+ int sect;
+ cfi_word status;
+ int sa = -1;
+ int flag;
+ ulong start, last, now;
+
+ flag = disable_interrupts();
+
+ cfi_cmd(flash, 0xaa, 0x555);
+ cfi_cmd(flash, 0x55, 0x2aa);
+ cfi_cmd(flash, 0x80, 0x555);
+ cfi_cmd(flash, 0xaa, 0x555);
+ cfi_cmd(flash, 0x55, 0x2aa);
+ for ( sect = s_first; sect <= s_last; sect++) {
+ if (flash->protect[sect] == 0) {
+ sa = flash->start[sect] - flash->start[0];
+ write32(flash->start[sect], 0x00300030);
+ }
+ }
+ if (flag)
+ enable_interrupts();
+
+ if (sa < 0)
+ goto DONE;
+
+ udelay (1000);
+ start = get_timer (0);
+ last = start;
+ for(;;) {
+ status = cfi_read(flash, sa);
+ if (status == CMD(0xffff))
+ break;
+
+ if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
+ printf ("Timeout\n");
+ return ERR_TIMOUT;
+ }
+
+ if ((now - last) > 1000) {
+ serial_putc ('.');
+ last = now;
+ }
+ udelay(10);
+ }
+DONE:
+ cfi_cmd(flash, 0xf0, 0);
+
+ printf (" done\n");
+
+ return ERR_OK;
+}
+
+int flash_erase (flash_info_t *flash, int s_first, int s_last)
+{
+ int sect;
+ int prot;
+
+ if ((s_first < 0) || (s_first > s_last)) {
+ if (flash->flash_id == FLASH_UNKNOWN)
+ printf ("- missing\n");
+ else
+ printf ("- no sectors to erase\n");
+ return ERR_NOT_ERASED;
+ }
+ if (flash->flash_id == FLASH_UNKNOWN) {
+ printf ("Can't erase unknown flash type - aborted\n");
+ return ERR_NOT_ERASED;
+ }
+
+ prot = 0;
+ for (sect = s_first; sect <= s_last; sect++)
+ if (flash->protect[sect]) prot++;
+
+ if (prot)
+ printf ("- Warning: %d protected sectors will not be erased!\n",
+ prot);
+ else
+ printf ("\n");
+
+ return do_flash_erase(flash, s_first, s_last);
+}
+
+struct jedec_flash_info {
+ const uint16_t mfr_id;
+ const uint16_t dev_id;
+ const char *name;
+ const int DevSize;
+ const int InterfaceDesc;
+ const int NumEraseRegions;
+ const ulong regions[4];
+};
+
+#define ERASEINFO(size,blocks) (size<<8)|(blocks-1)
+
+#define SIZE_1MiB 20
+#define SIZE_2MiB 21
+#define SIZE_4MiB 22
+
+static const struct jedec_flash_info jedec_table[] = {
+ {
+ mfr_id: (uint16_t)AMD_MANUFACT,
+ dev_id: (uint16_t)AMD_ID_LV800T,
+ name: "AMD AM29LV800T",
+ DevSize: SIZE_1MiB,
+ NumEraseRegions: 4,
+ regions: {ERASEINFO(0x10000,15),
+ ERASEINFO(0x08000,1),
+ ERASEINFO(0x02000,2),
+ ERASEINFO(0x04000,1)
+ }
+ }, {
+ mfr_id: (uint16_t)AMD_MANUFACT,
+ dev_id: (uint16_t)AMD_ID_LV800B,
+ name: "AMD AM29LV800B",
+ DevSize: SIZE_1MiB,
+ NumEraseRegions: 4,
+ regions: {ERASEINFO(0x10000,15),
+ ERASEINFO(0x08000,1),
+ ERASEINFO(0x02000,2),
+ ERASEINFO(0x04000,1)
+ }
+ }, {
+ mfr_id: (uint16_t)AMD_MANUFACT,
+ dev_id: (uint16_t)AMD_ID_LV160T,
+ name: "AMD AM29LV160T",
+ DevSize: SIZE_2MiB,
+ NumEraseRegions: 4,
+ regions: {ERASEINFO(0x10000,31),
+ ERASEINFO(0x08000,1),
+ ERASEINFO(0x02000,2),
+ ERASEINFO(0x04000,1)
+ }
+ }, {
+ mfr_id: (uint16_t)AMD_MANUFACT,
+ dev_id: (uint16_t)AMD_ID_LV160B,
+ name: "AMD AM29LV160B",
+ DevSize: SIZE_2MiB,
+ NumEraseRegions: 4,
+ regions: {ERASEINFO(0x04000,1),
+ ERASEINFO(0x02000,2),
+ ERASEINFO(0x08000,1),
+ ERASEINFO(0x10000,31)
+ }
+ }, {
+ mfr_id: (uint16_t)AMD_MANUFACT,
+ dev_id: (uint16_t)AMD_ID_LV320T,
+ name: "AMD AM29LV320T",
+ DevSize: SIZE_4MiB,
+ NumEraseRegions: 2,
+ regions: {ERASEINFO(0x10000,63),
+ ERASEINFO(0x02000,8)
+ }
+
+ }, {
+ mfr_id: (uint16_t)AMD_MANUFACT,
+ dev_id: (uint16_t)AMD_ID_LV320B,
+ name: "AMD AM29LV320B",
+ DevSize: SIZE_4MiB,
+ NumEraseRegions: 2,
+ regions: {ERASEINFO(0x02000,8),
+ ERASEINFO(0x10000,63)
+ }
+ }
+};
+
+static ulong cfi_init(uint32_t base, flash_info_t *flash)
+{
+ int sector;
+ int block;
+ int block_count;
+ int offset = 0;
+ int reverse = 0;
+ int primary;
+ int mfr_id;
+ int dev_id;
+
+ flash->start[0] = base;
+ cfi_cmd(flash, 0xF0, 0);
+ cfi_cmd(flash, 0x98, 0);
+ if ( !( cfi_read_query(flash, 0x10) == 'Q' &&
+ cfi_read_query(flash, 0x11) == 'R' &&
+ cfi_read_query(flash, 0x12) == 'Y' )) {
+ cfi_cmd(flash, 0xff, 0);
+ return 0;
+ }
+
+ flash->size = 1 << cfi_read_query(flash, 0x27);
+ flash->size *= 4;
+ block_count = cfi_read_query(flash, 0x2c);
+ primary = cfi_read_query(flash, 0x15);
+ if ( cfi_read_query(flash, primary + 4) == 0x30)
+ reverse = (cfi_read_query(flash, 0x1) & 0x01);
+ else
+ reverse = (cfi_read_query(flash, primary+15) == 3);
+
+ flash->sector_count = 0;
+
+ for ( block = reverse ? block_count - 1 : 0;
+ reverse ? block >= 0 : block < block_count;
+ reverse ? block-- : block ++) {
+ int sector_size =
+ (cfi_read_query(flash, 0x2d + block*4+2) |
+ (cfi_read_query(flash, 0x2d + block*4+3) << 8)) << 8;
+ int sector_count =
+ (cfi_read_query(flash, 0x2d + block*4+0) |
+ (cfi_read_query(flash, 0x2d + block*4+1) << 8)) + 1;
+ for(sector = 0; sector < sector_count; sector++) {
+ flash->start[flash->sector_count++] = base + offset;
+ offset += sector_size * 4;
+ }
+ }
+ mfr_id = cfi_read_query(flash, 0x00);
+ dev_id = cfi_read_query(flash, 0x01);
+
+ cfi_cmd(flash, 0xff, 0);
+
+ flash->flash_id = (mfr_id << 16) | dev_id;
+
+ for (sector = 0; sector < flash->sector_count; sector++) {
+ write32(flash->start[sector], 0x00600060);
+ write32(flash->start[sector], 0x00d000d0);
+ }
+ cfi_cmd(flash, 0xff, 0);
+
+ for (sector = 0; sector < flash->sector_count; sector++)
+ flash->protect[sector] = 0;
+
+ do_flash_erase = cfi_erase;
+ write_dword = cfi_write_dword;
+
+ return flash->size;
+}
+
+static ulong jedec_init(unsigned long base, flash_info_t *flash)
+{
+ int i;
+ int block, block_count;
+ int sector, offset;
+ int mfr_id, dev_id;
+ flash->start[0] = base;
+ cfi_cmd(flash, 0xF0, 0x000);
+ cfi_cmd(flash, 0xAA, 0x555);
+ cfi_cmd(flash, 0x55, 0x2AA);
+ cfi_cmd(flash, 0x90, 0x555);
+ mfr_id = cfi_read_query(flash, 0x000);
+ dev_id = cfi_read_query(flash, 0x0001);
+ cfi_cmd(flash, 0xf0, 0x000);
+
+ for(i=0; i<sizeof(jedec_table)/sizeof(struct jedec_flash_info); i++) {
+ if((jedec_table[i].mfr_id == mfr_id) &&
+ (jedec_table[i].dev_id == dev_id)) {
+
+ flash->flash_id = (mfr_id << 16) | dev_id;
+ flash->size = 1 << jedec_table[0].DevSize;
+ flash->size *= 4;
+ block_count = jedec_table[i].NumEraseRegions;
+ offset = 0;
+ flash->sector_count = 0;
+ for (block = 0; block < block_count; block++) {
+ int sector_size = jedec_table[i].regions[block];
+ int sector_count = (sector_size & 0xff) + 1;
+ sector_size >>= 8;
+ for (sector=0; sector<sector_count; sector++) {
+ flash->start[flash->sector_count++] =
+ base + offset;
+ offset += sector_size * 4;
+ }
+ }
+ break;
+ }
+ }
+
+ for (sector = 0; sector < flash->sector_count; sector++)
+ flash->protect[sector] = 0;
+
+ do_flash_erase = jedec_erase;
+ write_dword = jedec_write_dword;
+
+ return flash->size;
+}
+
+inline void mtibat1u(unsigned int x)
+{
+ __asm__ __volatile__ ("mtspr 530, %0" :: "r" (x));
+}
+
+inline void mtibat1l(unsigned int x)
+{
+ __asm__ __volatile__ ("mtspr 531, %0" :: "r" (x));
+}
+
+inline void mtdbat1u(unsigned int x)
+{
+ __asm__ __volatile__ ("mtspr 538, %0" :: "r" (x));
+}
+
+inline void mtdbat1l(unsigned int x)
+{
+ __asm__ __volatile__ ("mtspr 539, %0" :: "r" (x));
+}
+
+unsigned long flash_init (void)
+{
+ unsigned long size = 0;
+ int i;
+ unsigned int msr;
+
+ /* BAT1 */
+ CONFIG_WRITE_WORD(ERCR3, 0x0C00000C);
+ CONFIG_WRITE_WORD(ERCR4, 0x0800000C);
+ msr = get_msr();
+ set_msr(msr & ~(MSR_IR | MSR_DR));
+ mtibat1l(0x70000000 | BATL_PP_10 | BATL_CACHEINHIBIT);
+ mtibat1u(0x70000000 | BATU_BL_256M | BATU_VS | BATU_VP);
+ mtdbat1l(0x70000000 | BATL_PP_10 | BATL_CACHEINHIBIT);
+ mtdbat1u(0x70000000 | BATU_BL_256M | BATU_VS | BATU_VP);
+ set_msr(msr);
+
+ for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
+ flash_info[i].flash_id = FLASH_UNKNOWN;
+ size = cfi_init(FLASH_BASE0_PRELIM, &flash_info[0]);
+ if (!size)
+ size = jedec_init(FLASH_BASE0_PRELIM, &flash_info[0]);
+
+ if (flash_info[0].flash_id == FLASH_UNKNOWN)
+ printf ("# Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n",
+ size, size<<20);
+
+ return size;
+}
+
+void flash_print_info (flash_info_t *flash)
+{
+ int i;
+ int k;
+ int size;
+ int erased;
+ volatile unsigned long *p;
+
+ if (flash->flash_id == FLASH_UNKNOWN) {
+ printf ("missing or unknown FLASH type\n");
+ flash_init();
+ }
+
+ if (flash->flash_id == FLASH_UNKNOWN) {
+ printf ("missing or unknown FLASH type\n");
+ return;
+ }
+
+ switch (((flash->flash_id) >> 16) & 0xff) {
+ case 0x01:
+ printf ("AMD ");
+ break;
+ case 0x04:
+ printf("FUJITSU ");
+ break;
+ case 0x20:
+ printf("STM ");
+ break;
+ case 0xBF:
+ printf("SST ");
+ break;
+ case 0x89:
+ case 0xB0:
+ printf("INTEL ");
+ break;
+ default:
+ printf ("Unknown Vendor ");
+ break;
+ }
+
+ switch ((flash->flash_id) & 0xffff) {
+ case (uint16_t)AMD_ID_LV800T:
+ printf ("AM29LV800T\n");
+ break;
+ case (uint16_t)AMD_ID_LV800B:
+ printf ("AM29LV800B\n");
+ break;
+ case (uint16_t)AMD_ID_LV160T:
+ printf ("AM29LV160T\n");
+ break;
+ case (uint16_t)AMD_ID_LV160B:
+ printf ("AM29LV160B\n");
+ break;
+ case (uint16_t)AMD_ID_LV320T:
+ printf ("AM29LV320T\n");
+ break;
+ case (uint16_t)AMD_ID_LV320B:
+ printf ("AM29LV320B\n");
+ break;
+ case (uint16_t)INTEL_ID_28F800C3T:
+ printf ("28F800C3T\n");
+ break;
+ case (uint16_t)INTEL_ID_28F800C3B:
+ printf ("28F800C3B\n");
+ break;
+ case (uint16_t)INTEL_ID_28F160C3T:
+ printf ("28F160C3T\n");
+ break;
+ case (uint16_t)INTEL_ID_28F160C3B:
+ printf ("28F160C3B\n");
+ break;
+ case (uint16_t)INTEL_ID_28F320C3T:
+ printf ("28F320C3T\n");
+ break;
+ case (uint16_t)INTEL_ID_28F320C3B:
+ printf ("28F320C3B\n");
+ break;
+ case (uint16_t)INTEL_ID_28F640C3T:
+ printf ("28F640C3T\n");
+ break;
+ case (uint16_t)INTEL_ID_28F640C3B:
+ printf ("28F640C3B\n");
+ break;
+ default:
+ printf ("Unknown Chip Type\n");
+ break;
+ }
+
+ if (flash->size >= (1 << 20)) {
+ printf (" Size: %ld MB in %d Sectors\n",
+ flash->size >> 20, flash->sector_count);
+ } else {
+ printf (" Size: %ld kB in %d Sectors\n",
+ flash->size >> 10, flash->sector_count);
+ }
+
+ printf (" Sector Start Addresses:");
+ for (i = 0; i < flash->sector_count; ++i) {
+ /* Check if whole sector is erased*/
+ if (i != (flash->sector_count-1))
+ size = flash->start[i+1] - flash->start[i];
+ else
+ size = flash->start[0] + flash->size - flash->start[i];
+
+ erased = 1;
+ p = (volatile unsigned long *)flash->start[i];
+ size = size >> 2; /* divide by 4 for longword access */
+ for (k=0; k<size; k++) {
+ if (*p++ != 0xffffffff) {
+ erased = 0;
+ break;
+ }
+ }
+
+ if ((i % 5) == 0)
+ printf ("\n ");
+
+ printf (" %08lX%s%s",
+ flash->start[i],
+ erased ? " E" : " ",
+ flash->protect[i] ? "RO " : " ");
+ }
+ printf ("\n");
+}
generated by cgit v1.1 at 2024-11-23 20:47:34 +0000