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-rw-r--r--board/sc520_cdp/flash.c917
1 files changed, 555 insertions, 362 deletions
diff --git a/board/sc520_cdp/flash.c b/board/sc520_cdp/flash.c
index 973cde8b99..1ebb32e2e9 100644
--- a/board/sc520_cdp/flash.c
+++ b/board/sc520_cdp/flash.c
@@ -1,4 +1,7 @@
/*
+ * (C) Copyright 2002, 2003
+ * Daniel Engström, Omicron Ceti AB, daniel@omicron.se
+ *
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Alex Zuepke <azu@sysgo.de>
@@ -23,31 +26,23 @@
*/
#include <common.h>
+#include <asm/io.h>
+#include <pci.h>
+#include <asm/ic/sc520.h>
-ulong myflush(void);
+#define PROBE_BUFFER_SIZE 1024
+static unsigned char buffer[PROBE_BUFFER_SIZE];
+#define SC520_MAX_FLASH_BANKS 3
+#define SC520_FLASH_BANK0_BASE 0x38000000 /* BOOTCS */
+#define SC520_FLASH_BANK1_BASE 0x30000000 /* ROMCS0 */
+#define SC520_FLASH_BANK2_BASE 0x28000000 /* ROMCS1 */
+#define SC520_FLASH_BANKSIZE 0x8000000
-#define FLASH_BANK_SIZE 0x400000 /* 4 MB */
-#define MAIN_SECT_SIZE 0x20000 /* 128 KB */
+#define AMD29LV016B_SIZE 0x200000
+#define AMD29LV016B_SECTORS 32
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
-
-
-#define CMD_READ_ARRAY 0x00F000F0
-#define CMD_UNLOCK1 0x00AA00AA
-#define CMD_UNLOCK2 0x00550055
-#define CMD_ERASE_SETUP 0x00800080
-#define CMD_ERASE_CONFIRM 0x00300030
-#define CMD_PROGRAM 0x00A000A0
-#define CMD_UNLOCK_BYPASS 0x00200020
-
-#define MEM_FLASH_ADDR1 (*(volatile u32 *)(CFG_FLASH_BASE + (0x00000555 << 2)))
-#define MEM_FLASH_ADDR2 (*(volatile u32 *)(CFG_FLASH_BASE + (0x000002AA << 2)))
-
-#define BIT_ERASE_DONE 0x00800080
-#define BIT_RDY_MASK 0x00800080
-#define BIT_PROGRAM_ERROR 0x00200020
-#define BIT_TIMEOUT 0x80000000 /* our flag */
+flash_info_t flash_info[SC520_MAX_FLASH_BANKS];
#define READY 1
#define ERR 2
@@ -56,394 +51,592 @@ flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
/*-----------------------------------------------------------------------
*/
-ulong flash_init(void)
+
+static u32 _probe_flash(u32 addr, u32 bw, int il)
{
- int i, j;
- ulong size = 0;
-
- for (i = 0; i < CFG_MAX_FLASH_BANKS; i++)
- {
- ulong flashbase = 0;
- flash_info[i].flash_id =
- (AMD_MANUFACT & FLASH_VENDMASK) |
- (AMD_ID_LV160B & FLASH_TYPEMASK);
- flash_info[i].size = FLASH_BANK_SIZE;
- flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
- memset(flash_info[i].protect, 0, CFG_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++)
- {
-
- if (j <= 3)
- {
- /* 1st one is 32 KB */
- if (j == 0)
- {
- flash_info[i].start[j] = flashbase + 0;
+ u32 result=0;
+
+ /* First do an unlock cycle for the benefit of
+ * devices that need it */
+
+ switch (bw) {
+
+ case 1:
+ *(volatile u8*)(addr+0x5555) = 0xaa;
+ *(volatile u8*)(addr+0x2aaa) = 0x55;
+ *(volatile u8*)(addr+0x5555) = 0x90;
+
+ /* Read vendor */
+ result = *(volatile u8*)addr;
+ result <<= 16;
+
+ /* Read device */
+ result |= *(volatile u8*)(addr+2);
+
+ /* Return device to data mode */
+ *(volatile u8*)addr = 0xff;
+ *(volatile u8*)(addr+0x5555), 0xf0;
+ break;
+
+ case 2:
+ *(volatile u16*)(addr+0xaaaa) = 0xaaaa;
+ *(volatile u16*)(addr+0x5554) = 0x5555;
+
+ /* Issue identification command */
+ if (il == 2) {
+ *(volatile u16*)(addr+0xaaaa) = 0x9090;
+
+ /* Read vendor */
+ result = *(volatile u8*)addr;
+ result <<= 16;
+
+ /* Read device */
+ result |= *(volatile u8*)(addr+2);
+
+ /* Return device to data mode */
+ *(volatile u16*)addr = 0xffff;
+ *(volatile u16*)(addr+0xaaaa), 0xf0f0;
+
+ } else {
+ *(volatile u8*)(addr+0xaaaa) = 0x90;
+ /* Read vendor */
+ result = *(volatile u16*)addr;
+ result <<= 16;
+
+ /* Read device */
+ result |= *(volatile u16*)(addr+2);
+
+ /* Return device to data mode */
+ *(volatile u8*)addr = 0xff;
+ *(volatile u8*)(addr+0xaaaa), 0xf0;
}
-
- /* 2nd and 3rd are both 16 KB */
- if ((j == 1) || (j == 2))
- {
- flash_info[i].start[j] = flashbase + 0x8000 + (j-1)*0x4000;
+
+ break;
+
+ case 4:
+ *(volatile u32*)(addr+0x5554) = 0xaaaaaaaa;
+ *(volatile u32*)(addr+0xaaa8) = 0x55555555;
+
+ switch (il) {
+ case 1:
+ /* Issue identification command */
+ *(volatile u8*)(addr+0x5554) = 0x90;
+
+ /* Read vendor */
+ result = *(volatile u16*)addr;
+ result <<= 16;
+
+ /* Read device */
+ result |= *(volatile u16*)(addr+4);
+
+ /* Return device to data mode */
+ *(volatile u8*)addr = 0xff;
+ *(volatile u8*)(addr+0x5554), 0xf0;
+ break;
+
+ case 2:
+ /* Issue identification command */
+ *(volatile u32*)(addr + 0x5554) = 0x00900090;
+
+ /* Read vendor */
+ result = *(volatile u16*)addr;
+ result <<= 16;
+
+ /* Read device */
+ result |= *(volatile u16*)(addr+4);
+
+ /* Return device to data mode */
+ *(volatile u32*)addr = 0x00ff00ff;
+ *(volatile u32*)(addr+0x5554), 0x00f000f0;
+ break;
+
+ case 4:
+ /* Issue identification command */
+ *(volatile u32*)(addr+0x5554) = 0x90909090;
+
+ /* Read vendor */
+ result = *(volatile u8*)addr;
+ result <<= 16;
+
+ /* Read device */
+ result |= *(volatile u8*)(addr+4);
+
+ /* Return device to data mode */
+ *(volatile u32*)addr = 0xffffffff;
+ *(volatile u32*)(addr+0x5554), 0xf0f0f0f0;
+ break;
}
+ break;
+ }
+
+
+
+ return result;
+}
+
+extern int _probe_flash_end;
+asm ("_probe_flash_end:\n"
+ ".long 0\n");
- /* 4th 64 KB */
- if (j == 3)
- {
- flash_info[i].start[j] = flashbase + 0x10000;
+static int identify_flash(unsigned address, int width)
+{
+ int is;
+ int device;
+ int vendor;
+ int size;
+ unsigned res;
+
+ u32 (*_probe_flash_ptr)(u32 a, u32 bw, int il);
+
+ size = (unsigned)&_probe_flash_end - (unsigned)_probe_flash;
+
+ if (size > PROBE_BUFFER_SIZE) {
+ printf("_probe_flash() routine too large (%d) %p - %p\n",
+ size, &_probe_flash_end, _probe_flash);
+ return 0;
+ }
+
+ memcpy(buffer, _probe_flash, size);
+ _probe_flash_ptr = (void*)buffer;
+
+ is = disable_interrupts();
+ res = _probe_flash_ptr(address, width, 1);
+ if (is) {
+ enable_interrupts();
+ }
+
+
+ vendor = res >> 16;
+ device = res & 0xffff;
+
+
+ return res;
+}
+
+ulong flash_init(void)
+{
+ int i, j;
+ ulong size = 0;
+
+ for (i = 0; i < SC520_MAX_FLASH_BANKS; i++) {
+ unsigned id;
+ ulong flashbase = 0;
+ int sectsize = 0;
+
+ memset(flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
+ switch (i) {
+ case 0:
+ flashbase = SC520_FLASH_BANK0_BASE;
+ break;
+ case 1:
+ flashbase = SC520_FLASH_BANK1_BASE;
+ break;
+ case 2:
+ flashbase = SC520_FLASH_BANK2_BASE;
+ break;
+ default:
+ panic("configured to many flash banks!\n");
+ }
+
+ id = identify_flash(flashbase, 4);
+ switch (id & 0x00ff00ff) {
+ case 0x000100c8:
+ /* 29LV016B/29LV017B */
+ flash_info[i].flash_id =
+ (AMD_MANUFACT & FLASH_VENDMASK) |
+ (AMD_ID_LV016B & FLASH_TYPEMASK);
+
+ flash_info[i].size = AMD29LV016B_SIZE*4;
+ flash_info[i].sector_count = AMD29LV016B_SECTORS;
+ sectsize = (AMD29LV016B_SIZE*4)/AMD29LV016B_SECTORS;
+ printf("Bank %d: 4 x AMD 29LV017B\n", i);
+ break;
+
+
+ default:
+ printf("Bank %d have unknown flash %08x\n", i, id);
+ flash_info[i].flash_id = FLASH_UNKNOWN;
+ continue;
+ }
+
+ for (j = 0; j < flash_info[i].sector_count; j++) {
+ flash_info[i].start[j] = flashbase + j * sectsize;
}
- }
- else
- {
- flash_info[i].start[j] = flashbase + (j - 3)*MAIN_SECT_SIZE;
- }
+ size += flash_info[i].size;
+
+ flash_protect(FLAG_PROTECT_CLEAR,
+ flash_info[i].start[0],
+ flash_info[i].start[0] + flash_info[i].size - 1,
+ &flash_info[i]);
}
- size += flash_info[i].size;
- }
-
- /*
- * Protect monitor and environment sectors
- */
- flash_protect(FLAG_PROTECT_SET,
- i386boot_start-CFG_FLASH_BASE,
- i386boot_end-CFG_FLASH_BASE,
- &flash_info[0]);
-
- flash_protect(FLAG_PROTECT_SET,
- CFG_ENV_ADDR,
- CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
- &flash_info[0]);
- return size;
+
+ /*
+ * Protect monitor and environment sectors
+ */
+ flash_protect(FLAG_PROTECT_SET,
+ i386boot_start,
+ i386boot_end,
+ &flash_info[0]);
+#ifdef CFG_ENV_ADDR
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
+ &flash_info[0]);
+#endif
+ return size;
}
/*-----------------------------------------------------------------------
*/
-void flash_print_info (flash_info_t *info)
+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 (AMD_ID_LV160B & FLASH_TYPEMASK):
- printf("2x Amd29F160BB (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 ");
+ int i;
+
+ switch (info->flash_id & FLASH_VENDMASK) {
+
+ case (AMD_MANUFACT & FLASH_VENDMASK):
+ printf("AMD: ");
+ switch (info->flash_id & FLASH_TYPEMASK) {
+ case (AMD_ID_LV016B & FLASH_TYPEMASK):
+ printf("4x AMD29LV017B (4x16Mbit)\n");
+ break;
+ default:
+ printf("Unknown Chip Type\n");
+ goto done;
+ break;
+ }
+
+ break;
+ default:
+ printf("Unknown Vendor ");
+ break;
}
- printf (" %08lX%s", info->start[i],
- info->protect[i] ? " (RO)" : " ");
- }
- printf ("\n");
-
-Done:
+
+
+ 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:
}
/*-----------------------------------------------------------------------
*/
-int flash_erase (flash_info_t *info, int s_first, int s_last)
+/* this needs to be inlined, the SWTMRMMILLI register is reset by each read */
+#define __udelay(delay) \
+{ \
+ unsigned micro; \
+ unsigned milli=0; \
+ \
+ micro = *(volatile u16*)(0xfffef000+SC520_SWTMRMILLI); \
+ \
+ for (;;) { \
+ \
+ milli += *(volatile u16*)(0xfffef000+SC520_SWTMRMILLI); \
+ micro = *(volatile u16*)(0xfffef000+SC520_SWTMRMICRO); \
+ \
+ if ((delay) <= (micro + (milli * 1000))) { \
+ break; \
+ } \
+ } \
+} while (0)
+
+static u32 _amd_erase_flash(u32 addr, u32 sector)
{
- ulong result;
- int iflag, prot, sect;
- int rc = ERR_OK;
- int chip1, chip2;
-
- /* 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;
- }
+ unsigned elapsed;
+
+ /* Issue erase */
+ *(volatile u32*)(addr + 0x5554) = 0xAAAAAAAA;
+ *(volatile u32*)(addr + 0xaaa8) = 0x55555555;
+ *(volatile u32*)(addr + 0x5554) = 0x80808080;
+ /* And one unlock */
+ *(volatile u32*)(addr + 0x5554) = 0xAAAAAAAA;
+ *(volatile u32*)(addr + 0xaaa8) = 0x55555555;
+ /* Sector erase command comes last */
+ *(volatile u32*)(addr + sector) = 0x30303030;
+
+ elapsed = *(volatile u16*)(0xfffef000+SC520_SWTMRMILLI); /* dummy read */
+ elapsed = 0;
+ __udelay(50);
+ while (((*(volatile u32*)(addr + sector)) & 0x80808080) != 0x80808080) {
+
+ elapsed += *(volatile u16*)(0xfffef000+SC520_SWTMRMILLI);
+ if (elapsed > ((CFG_FLASH_ERASE_TOUT/CFG_HZ) * 1000)) {
+ *(volatile u32*)(addr) = 0xf0f0f0f0;
+ return 1;
+ }
+ }
+
+ *(volatile u32*)(addr) = 0xf0f0f0f0;
+
+ return 0;
+}
- if ((info->flash_id & FLASH_VENDMASK) !=
- (AMD_MANUFACT & FLASH_VENDMASK)) {
- return ERR_UNKNOWN_FLASH_VENDOR;
- }
+extern int _amd_erase_flash_end;
+asm ("_amd_erase_flash_end:\n"
+ ".long 0\n");
- prot = 0;
- for (sect=s_first; sect<=s_last; ++sect) {
- if (info->protect[sect]) {
- prot++;
+int flash_erase(flash_info_t *info, int s_first, int s_last)
+{
+ u32 (*_erase_flash_ptr)(u32 a, u32 so);
+ int prot;
+ int sect;
+ unsigned size;
+
+ 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;
}
- }
- 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();
-
- /* 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 */
- reset_timer();
-
- if (info->protect[sect] == 0)
- { /* not protected */
- vu_long *addr = (vu_long *)(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 = chip2 = 0;
-
- do
- {
- result = *addr;
-
- /* check timeout */
- if (get_timer(0) > CFG_FLASH_ERASE_TOUT)
- {
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
- chip1 = TMO;
- break;
+
+ if ((info->flash_id & FLASH_VENDMASK) == (AMD_MANUFACT & FLASH_VENDMASK)) {
+ size = (unsigned)&_amd_erase_flash_end - (unsigned)_amd_erase_flash;
+
+ if (size > PROBE_BUFFER_SIZE) {
+ printf("_amd_erase_flash() routine too large (%d) %p - %p\n",
+ size, &_amd_erase_flash_end, _amd_erase_flash);
+ return 0;
}
-
- if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE)
- chip1 = READY;
-
- if (!chip1 && (result & 0xFFFF) & BIT_PROGRAM_ERROR)
- chip1 = ERR;
-
- if (!chip2 && (result >> 16) & BIT_ERASE_DONE)
- chip2 = READY;
-
- if (!chip2 && (result >> 16) & BIT_PROGRAM_ERROR)
- chip2 = ERR;
-
- } while (!chip1 || !chip2);
-
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
-
- if (chip1 == ERR || chip2 == ERR)
- {
- rc = ERR_PROG_ERROR;
- goto outahere;
- }
- if (chip1 == TMO)
- {
- rc = ERR_TIMOUT;
- goto outahere;
- }
-
- printf("ok.\n");
+
+ memcpy(buffer, _amd_erase_flash, size);
+ _erase_flash_ptr = (void*)buffer;
+
+ } else {
+ printf ("Can't erase unknown flash type - aborted\n");
+ return 1;
}
- else /* it was protected */
- {
- printf("protected!\n");
+
+ 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");
+ }
+
+
+ /* Start erase on unprotected sectors */
+ for (sect = s_first; sect<=s_last; sect++) {
+
+ if (info->protect[sect] == 0) { /* not protected */
+ int res;
+ int flag;
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ res = _erase_flash_ptr(info->start[0], info->start[sect]-info->start[0]);
+
+ /* re-enable interrupts if necessary */
+ if (flag) {
+ enable_interrupts();
+ }
+
+
+ if (res) {
+ printf("Erase timed out, sector %d\n", sect);
+ return res;
+ }
+
+ putc('.');
+ }
}
- }
-
- if (ctrlc())
- printf("User Interrupt!\n");
-
-outahere:
- /* allow flash to settle - wait 10 ms */
- udelay(10000);
-
- if (iflag)
- enable_interrupts();
-
- return rc;
+
+ return 0;
}
/*-----------------------------------------------------------------------
- * Copy memory to flash
+ * Write a word to Flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
*/
-
-volatile static int write_word (flash_info_t *info, ulong dest, ulong data)
+static int _amd_write_word(unsigned start, unsigned dest, unsigned data)
{
- vu_long *addr = (vu_long *)dest;
- ulong result;
- int rc = ERR_OK;
- int iflag;
- int chip1, chip2;
-
- /*
- * 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_UNLOCK_BYPASS;
- *addr = CMD_PROGRAM;
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- reset_timer();
-
- /* wait until flash is ready */
- chip1 = chip2 = 0;
- do
- {
- result = *addr;
-
- /* check timeout */
- if (get_timer(0) > CFG_FLASH_ERASE_TOUT)
- {
- chip1 = ERR | TMO;
- break;
+ volatile u32 *addr2 = (u32*)start;
+ volatile u32 *dest2 = (u32*)dest;
+ volatile u32 *data2 = (u32*)&data;
+ unsigned elapsed;
+
+ /* Check if Flash is (sufficiently) erased */
+ if ((*((volatile u32*)dest) & (u32)data) != (u32)data) {
+ return 2;
}
- if (!chip1 && ((result & 0x80) == (data & 0x80)))
- chip1 = READY;
-
- if (!chip1 && ((result & 0xFFFF) & BIT_PROGRAM_ERROR))
- {
- result = *addr;
-
- if ((result & 0x80) == (data & 0x80))
- chip1 = READY;
- else
- chip1 = ERR;
- }
-
- if (!chip2 && ((result & (0x80 << 16)) == (data & (0x80 << 16))))
- chip2 = READY;
-
- if (!chip2 && ((result >> 16) & BIT_PROGRAM_ERROR))
- {
- result = *addr;
-
- if ((result & (0x80 << 16)) == (data & (0x80 << 16)))
- chip2 = READY;
- else
- chip2 = ERR;
+
+ addr2[0x5554] = 0xAAAAAAAA;
+ addr2[0xaaa8] = 0x55555555;
+ addr2[0x5554] = 0xA0A0A0A0;
+
+ dest2[0] = data;
+
+ elapsed = *(volatile u16*)(0xfffef000+SC520_SWTMRMILLI); /* dummy read */
+ elapsed = 0;
+
+ /* data polling for D7 */
+ while ((dest2[0] & 0x80808080) != (data2[0] & 0x80808080)) {
+ elapsed += *(volatile u16*)(0xfffef000+SC520_SWTMRMILLI);
+ if (elapsed > ((CFG_FLASH_WRITE_TOUT/CFG_HZ) * 1000)) {
+ addr2[0] = 0xf0f0f0f0;
+ return 1;
+ }
}
- } while (!chip1 || !chip2);
-
- *addr = CMD_READ_ARRAY;
+
+ addr2[0] = 0xf0f0f0f0;
+
+ return 0;
+}
- if (chip1 == ERR || chip2 == ERR || *addr != data)
- rc = ERR_PROG_ERROR;
+extern int _amd_write_word_end;
+asm ("_amd_write_word_end:\n"
+ ".long 0\n");
- if (iflag)
- enable_interrupts();
- return rc;
-}
/*-----------------------------------------------------------------------
- * Copy memory to flash.
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ * 3 - Unsupported flash type
*/
-int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
{
- ulong cp, wp, data;
- int l;
- int i, rc;
+ ulong cp, wp, data;
+ int i, l, rc;
+ int flag;
+ u32 (*_write_word_ptr)(unsigned start, unsigned dest, unsigned data);
+ unsigned size;
+
+ if ((info->flash_id & FLASH_VENDMASK) == (AMD_MANUFACT & FLASH_VENDMASK)) {
+ size = (unsigned)&_amd_write_word_end - (unsigned)_amd_write_word;
+
+ if (size > PROBE_BUFFER_SIZE) {
+ printf("_amd_write_word() routine too large (%d) %p - %p\n",
+ size, &_amd_write_word_end, _amd_write_word);
+ return 0;
+ }
+
+ memcpy(buffer, _amd_write_word, size);
+ _write_word_ptr = (void*)buffer;
+
+ } else {
+ printf ("Can't program unknown flash type - aborted\n");
+ return 3;
+ }
- 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 << 24);
+ 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 |= (*(uchar *)cp) << (8*i);
+ }
+ for (; i<4 && cnt>0; ++i) {
+ data |= *src++ << (8*i);
+ --cnt;
+ ++cp;
+ }
+ for (; cnt==0 && i<4; ++i, ++cp) {
+ data |= (*(uchar *)cp) << (8*i);
+ }
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ rc = _write_word_ptr(info->start[0], wp, data);
+
+ /* re-enable interrupts if necessary */
+ if (flag) {
+ enable_interrupts();
+ }
+ if (rc != 0) {
+ return rc;
+ }
+ wp += 4;
}
- for (; i<4 && cnt>0; ++i) {
- data = (data >> 8) | (*src++ << 24);
- --cnt;
- ++cp;
+
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 4) {
+ data = 0;
+
+ for (i=0; i<4; ++i) {
+ data |= *src++ << (8*i);
+ }
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ rc = _write_word_ptr(info->start[0], wp, data);
+
+ /* re-enable interrupts if necessary */
+ if (flag) {
+ enable_interrupts();
+ }
+ if (rc != 0) {
+ return rc;
+ }
+ wp += 4;
+ cnt -= 4;
}
- for (; cnt==0 && i<4; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *)cp << 24);
+
+ if (cnt == 0) {
+ return 0;
}
-
- if ((rc = write_word(info, wp, data)) != 0) {
- return (rc);
+
+ /*
+ * handle unaligned tail bytes
+ */
+ data = 0;
+ for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
+ data |= *src++ << (8*i);
+ --cnt;
}
- wp += 4;
- }
-
- /*
- * handle word aligned part
- */
- while (cnt >= 4) {
- data = *((vu_long*)src);
- if ((rc = write_word(info, wp, data)) != 0) {
- return (rc);
+
+ for (; i<4; ++i, ++cp) {
+ data |= (*(uchar *)cp) << (8*i);
}
- src += 4;
- wp += 4;
- cnt -= 4;
- }
-
- if (cnt == 0) {
- return ERR_OK;
- }
-
- /*
- * handle unaligned tail bytes
- */
- data = 0;
- for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
- data = (data >> 8) | (*src++ << 24);
- --cnt;
- }
- for (; i<4; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *)cp << 24);
- }
-
- return write_word(info, wp, data);
+
+ /* Disable interrupts which might cause a timeout here */
+ flag = disable_interrupts();
+
+ rc = _write_word_ptr(info->start[0], wp, data);
+
+ /* re-enable interrupts if necessary */
+ if (flag) {
+ enable_interrupts();
+ }
+
+ return rc;
+
}
+
+
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