summaryrefslogtreecommitdiff
path: root/board/Marvell/common/flash.c
diff options
context:
space:
mode:
Diffstat (limited to 'board/Marvell/common/flash.c')
-rw-r--r--board/Marvell/common/flash.c1056
1 files changed, 0 insertions, 1056 deletions
diff --git a/board/Marvell/common/flash.c b/board/Marvell/common/flash.c
deleted file mode 100644
index 32f226dcc3..0000000000
--- a/board/Marvell/common/flash.c
+++ /dev/null
@@ -1,1056 +0,0 @@
-/*
- * (C) Copyright 2001
- * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-/*
- * flash.c - flash support for the 512k, 8bit boot flash
- and the 8MB 32bit extra flash on the DB64360
- * most of this file was based on the existing U-Boot
- * flash drivers.
- *
- * written or collected and sometimes rewritten by
- * Ingo Assmus <ingo.assmus@keymile.com>
- *
- */
-
-#include <common.h>
-#include <mpc8xx.h>
-#include "../include/mv_gen_reg.h"
-#include "../include/memory.h"
-#include "intel_flash.h"
-
-#define FLASH_ROM 0xFFFD /* unknown flash type */
-#define FLASH_RAM 0xFFFE /* unknown flash type */
-#define FLASH_MAN_UNKNOWN 0xFFFF0000
-
-/* #define DEBUG */
-
-/* Intel flash commands */
-int flash_erase_intel (flash_info_t * info, int s_first, int s_last);
-int write_word_intel (bank_addr_t addr, bank_word_t value);
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-static ulong flash_get_size (int portwidth, vu_long * addr,
- flash_info_t * info);
-static int write_word (flash_info_t * info, ulong dest, ulong data);
-static void flash_get_offsets (ulong base, flash_info_t * info);
-
-/*-----------------------------------------------------------------------
- */
-
-unsigned long flash_init (void)
-{
- unsigned int i;
- unsigned long size_b0 = 0, size_b1 = 0;
- unsigned long base, flash_size;
-
- /* Init: no FLASHes known */
- for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
- flash_info[i].flash_id = FLASH_UNKNOWN;
- }
-
- /* the boot flash */
- base = CONFIG_SYS_FLASH_BASE;
- size_b0 =
- flash_get_size (CONFIG_SYS_BOOT_FLASH_WIDTH, (vu_long *) base,
- &flash_info[0]);
-
- printf ("[%ldkB@%lx] ", size_b0 / 1024, base);
-
- if (flash_info[0].flash_id == FLASH_UNKNOWN) {
- printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n", base, size_b0, size_b0 << 20);
- }
-
- base = memoryGetDeviceBaseAddress (CONFIG_SYS_EXTRA_FLASH_DEVICE);
-/* base = memoryGetDeviceBaseAddress(DEV_CS3_BASE_ADDR);*/
- for (i = 1; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
- unsigned long size =
- flash_get_size (CONFIG_SYS_EXTRA_FLASH_WIDTH,
- (vu_long *) base, &flash_info[i]);
-
- printf ("[%ldMB@%lx] ", size >> 20, base);
-
- if (flash_info[i].flash_id == FLASH_UNKNOWN) {
- if (i == 1) {
- printf ("## Unknown FLASH at %08lx: Size = 0x%08lx = %ld MB\n", base, size_b1, size_b1 << 20);
- }
- break;
- }
- size_b1 += size;
- base += size;
- }
-
- flash_size = size_b0 + size_b1;
- return flash_size;
-}
-
-/*-----------------------------------------------------------------------
- */
-static void flash_get_offsets (ulong base, flash_info_t * info)
-{
- int i;
- int sector_size;
-
- if (!info->sector_count)
- return;
-
- /* set up sector start address table */
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_AM040:
- case FLASH_28F128J3A:
- case FLASH_28F640J3A:
- case FLASH_RAM:
- /* this chip has uniformly spaced sectors */
- sector_size = info->size / info->sector_count;
- for (i = 0; i < info->sector_count; i++)
- info->start[i] = base + (i * sector_size);
- break;
- default:
- if (info->flash_id & FLASH_BTYPE) {
- /* set sector offsets for bottom boot block type */
- info->start[0] = base + 0x00000000;
- info->start[1] = base + 0x00008000;
- info->start[2] = base + 0x0000C000;
- info->start[3] = base + 0x00010000;
- for (i = 4; i < info->sector_count; i++) {
- info->start[i] =
- base + (i * 0x00020000) - 0x00060000;
- }
- } else {
- /* set sector offsets for top boot block type */
- i = info->sector_count - 1;
- info->start[i--] = base + info->size - 0x00008000;
- info->start[i--] = base + info->size - 0x0000C000;
- info->start[i--] = base + info->size - 0x00010000;
- for (; i >= 0; i--) {
- info->start[i] = base + i * 0x00020000;
- }
- }
- }
-}
-
-/*-----------------------------------------------------------------------
- */
-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_STM:
- printf ("STM ");
- break;
- case FLASH_MAN_AMD:
- printf ("AMD ");
- break;
- case FLASH_MAN_FUJ:
- printf ("FUJITSU ");
- break;
- case FLASH_MAN_INTEL:
- printf ("INTEL ");
- break;
- default:
- printf ("Unknown Vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_AM040:
- printf ("AM29LV040B (4 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM400B:
- printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM400T:
- printf ("AM29LV400T (4 Mbit, top boot sector)\n");
- break;
- case FLASH_AM800B:
- printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM800T:
- printf ("AM29LV800T (8 Mbit, top boot sector)\n");
- break;
- case FLASH_AM160B:
- printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM160T:
- printf ("AM29LV160T (16 Mbit, top boot sector)\n");
- break;
- case FLASH_AM320B:
- printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
- break;
- case FLASH_AM320T:
- printf ("AM29LV320T (32 Mbit, top boot sector)\n");
- break;
- case FLASH_28F640J3A:
- printf ("28F640J3A (64 Mbit)\n");
- break;
- case FLASH_28F128J3A:
- printf ("28F128J3A (128 Mbit)\n");
- break;
- case FLASH_ROM:
- printf ("ROM\n");
- break;
- case FLASH_RAM:
- printf ("RAM\n");
- break;
- default:
- printf ("Unknown Chip Type\n");
- break;
- }
-
- if ((info->size >> 20) > 0) {
- printf (" Size: %ld MB in %d Sectors\n",
- info->size >> 20, info->sector_count);
- } else {
- printf (" Size: %ld kB in %d Sectors\n",
- info->size >> 10, 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!
- */
-
-static inline void flash_cmd (int width, volatile unsigned char *addr,
- int offset, unsigned char cmd)
-{
- /* supports 1x8, 1x16, and 2x16 */
- /* 2x8 and 4x8 are not supported */
- if (width == 4) {
- /* assuming chips are in 16 bit mode */
- /* 2x16 */
- unsigned long cmd32 = (cmd << 16) | cmd;
-
- *(volatile unsigned long *) (addr + offset * 2) = cmd32;
- } else {
- /* 1x16 or 1x8 */
- *(volatile unsigned char *) (addr + offset) = cmd;
- }
-}
-
-static ulong
-flash_get_size (int portwidth, vu_long * addr, flash_info_t * info)
-{
- short i;
- volatile unsigned char *caddr = (unsigned char *) addr;
- volatile unsigned short *saddr = (unsigned short *) addr;
- volatile unsigned long *laddr = (unsigned long *) addr;
- char old[2], save;
- ulong id = 0, manu = 0, base = (ulong) addr;
-
-#ifdef DEBUG
- printf ("%s: enter\n", __FUNCTION__);
-#endif
- info->portwidth = portwidth;
-
- save = *caddr;
-
- flash_cmd (portwidth, caddr, 0, 0xf0);
- flash_cmd (portwidth, caddr, 0, 0xf0);
-
- udelay (10);
-
- old[0] = caddr[0];
- old[1] = caddr[1];
-
-
- if (old[0] != 0xf0) {
- flash_cmd (portwidth, caddr, 0, 0xf0);
- flash_cmd (portwidth, caddr, 0, 0xf0);
-
- udelay (10);
-
- if (*caddr == 0xf0) {
- /* this area is ROM */
- *caddr = save;
- info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN;
- info->sector_count = 8;
- info->size = 0x80000;
- flash_get_offsets (base, info);
- return info->size;
- }
- } else {
- *caddr = 0;
-
- udelay (10);
-
- if (*caddr == 0) {
- /* this area is RAM */
- *caddr = save;
- info->flash_id = FLASH_RAM + FLASH_MAN_UNKNOWN;
- info->sector_count = 8;
- info->size = 0x80000;
- flash_get_offsets (base, info);
- return info->size;
- }
- flash_cmd (portwidth, caddr, 0, 0xf0);
-
- udelay (10);
- }
-
- /* Write auto select command: read Manufacturer ID */
- flash_cmd (portwidth, caddr, 0x555, 0xAA);
- flash_cmd (portwidth, caddr, 0x2AA, 0x55);
- flash_cmd (portwidth, caddr, 0x555, 0x90);
-
- udelay (10);
-
- if ((caddr[0] == old[0]) && (caddr[1] == old[1])) {
-
- /* this area is ROM */
- info->flash_id = FLASH_ROM + FLASH_MAN_UNKNOWN;
- info->sector_count = 8;
- info->size = 0x80000;
- flash_get_offsets (base, info);
- return info->size;
-#ifdef DEBUG
- } else {
- printf ("%px%d: %02x:%02x -> %02x:%02x\n",
- caddr, portwidth, old[0], old[1], caddr[0], caddr[1]);
-#endif
- }
-
- switch (portwidth) {
- case 1:
- manu = caddr[0];
- manu |= manu << 16;
- id = caddr[1];
- break;
- case 2:
- manu = saddr[0];
- manu |= manu << 16;
- id = saddr[1];
- id |= id << 16;
- break;
- case 4:
- manu = laddr[0];
- id = laddr[1];
- break;
- }
-
-#ifdef DEBUG
- flash_cmd (portwidth, caddr, 0, 0xf0);
-
- printf ("\n%08lx:%08lx:%08lx\n", base, manu, id);
- printf ("%08lx %08lx %08lx %08lx\n",
- laddr[0], laddr[1], laddr[2], laddr[3]);
-#endif
-
- switch (manu) {
- case STM_MANUFACT:
- info->flash_id = FLASH_MAN_STM;
- break;
- case AMD_MANUFACT:
- info->flash_id = FLASH_MAN_AMD;
- break;
- case FUJ_MANUFACT:
- info->flash_id = FLASH_MAN_FUJ;
- break;
- case INTEL_MANUFACT:
- info->flash_id = FLASH_MAN_INTEL;
- break;
- default:
- flash_cmd (portwidth, caddr, 0, 0xf0);
-
- printf ("Unknown Mfr [%08lx]:%08lx\n", manu, id);
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0;
- return (0); /* no or unknown flash */
- }
-
- switch (id) {
- case AMD_ID_LV400T:
- info->flash_id += FLASH_AM400T;
- info->sector_count = 11;
- info->size = 0x00100000;
- info->chipwidth = 1;
- break; /* => 1 MB */
-
- case AMD_ID_LV400B:
- info->flash_id += FLASH_AM400B;
- info->sector_count = 11;
- info->size = 0x00100000;
- info->chipwidth = 1;
- break; /* => 1 MB */
-
- case AMD_ID_LV800T:
- info->flash_id += FLASH_AM800T;
- info->sector_count = 19;
- info->size = 0x00200000;
- info->chipwidth = 1;
- break; /* => 2 MB */
-
- case AMD_ID_LV800B:
- info->flash_id += FLASH_AM800B;
- info->sector_count = 19;
- info->size = 0x00200000;
- info->chipwidth = 1;
- break; /* => 2 MB */
-
- case AMD_ID_LV160T:
- info->flash_id += FLASH_AM160T;
- info->sector_count = 35;
- info->size = 0x00400000;
- info->chipwidth = 1;
- break; /* => 4 MB */
-
- case AMD_ID_LV160B:
- info->flash_id += FLASH_AM160B;
- info->sector_count = 35;
- info->size = 0x00400000;
- info->chipwidth = 1;
- break; /* => 4 MB */
-#if 0 /* enable when device IDs are available */
- case AMD_ID_LV320T:
- info->flash_id += FLASH_AM320T;
- info->sector_count = 67;
- info->size = 0x00800000;
- break; /* => 8 MB */
-
- case AMD_ID_LV320B:
- info->flash_id += FLASH_AM320B;
- info->sector_count = 67;
- info->size = 0x00800000;
- break; /* => 8 MB */
-#endif
- case AMD_ID_LV040B:
- info->flash_id += FLASH_AM040;
- info->sector_count = 8;
- info->size = 0x80000;
- info->chipwidth = 1;
- break; /* => 512 kB */
-
- case INTEL_ID_28F640J3A:
- info->flash_id += FLASH_28F640J3A;
- info->sector_count = 64;
- info->size = 128 * 1024 * 64; /* 128kbytes x 64 blocks */
- info->chipwidth = 2;
- if (portwidth == 4)
- info->size *= 2; /* 2x16 */
- break;
-
- case INTEL_ID_28F128J3A:
- info->flash_id += FLASH_28F128J3A;
- info->sector_count = 128;
- info->size = 128 * 1024 * 128; /* 128kbytes x 128 blocks */
- info->chipwidth = 2;
- if (portwidth == 4)
- info->size *= 2; /* 2x16 */
- break;
-
- default:
- flash_cmd (portwidth, caddr, 0, 0xf0);
-
- printf ("Unknown id %lx:[%lx]\n", manu, id);
- info->flash_id = FLASH_UNKNOWN;
- info->chipwidth = 1;
- return (0); /* => no or unknown flash */
-
- }
-
- flash_get_offsets (base, info);
-
-
- /* check for protected sectors */
- for (i = 0; i < info->sector_count; i++) {
- /* read sector protection at sector address, (A7 .. A0)=0x02 */
- /* D0 = 1 if protected */
- caddr = (volatile unsigned char *) (info->start[i]);
- saddr = (volatile unsigned short *) (info->start[i]);
- laddr = (volatile unsigned long *) (info->start[i]);
- if (portwidth == 1)
- info->protect[i] = caddr[2] & 1;
- else if (portwidth == 2)
- info->protect[i] = saddr[2] & 1;
- else
- info->protect[i] = laddr[2] & 1;
- }
-
- /*
- * Prevent writes to uninitialized FLASH.
- */
- if (info->flash_id != FLASH_UNKNOWN) {
- caddr = (volatile unsigned char *) info->start[0];
-
- flash_cmd (portwidth, caddr, 0, 0xF0); /* reset bank */
- }
-
- return (info->size);
-}
-
-int flash_erase (flash_info_t * info, int s_first, int s_last)
-{
- volatile unsigned char *addr = (uchar *) (info->start[0]);
- int flag, prot, sect, l_sect;
- ulong start, now, last;
-
-/* modified to support 2x16 Intel flash */
-/* Note that the code will not exit on a flash erasure error or timeout */
-/* but will print and error message and continue processing sectors */
-/* until they are all erased. */
-/* 10-16-2002 P. Marchese */
- ulong mask;
- int timeout;
-
- if (info->portwidth == 4)
-/* {
- printf ("- Warning: erasing of 32Bit (2*16Bit i.e. 2*28F640J3A) not supported yet !!!! \n");
- return 1;
- }*/
- {
- /* make sure it's Intel flash */
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
- /* yup! it's an Intel flash */
- /* is it 16-bits wide? */
- if (info->chipwidth == 2) {
- /* yup! it's 16-bits wide */
- /* are there any sectors to process? */
- if ((s_first < 0) || (s_first > s_last)) {
- printf ("Error: There are no sectors to erase\n");
- printf ("Either sector %d is less than zero\n", s_first);
- printf ("or sector %d is greater than sector %d\n", s_first, s_last);
- return 1;
- }
- /* check for protected sectors */
- prot = 0;
- for (sect = s_first; sect <= s_last; ++sect)
- if (info->protect[sect])
- prot++;
- /* if variable "prot" is nonzero, there are protected sectors */
- if (prot)
- printf ("- Warning: %d protected sectors will not be erased!\n", prot);
- /* reset the flash */
- flash_cmd (info->portwidth, addr, 0,
- CHIP_CMD_RST);
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts ();
- /* Clear the status register */
- flash_cmd (info->portwidth, addr, 0,
- CHIP_CMD_CLR_STAT);
- flash_cmd (info->portwidth, addr, 0,
- CHIP_CMD_RST);
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect <= s_last; sect++) {
- /* is the sector unprotected? */
- if (info->protect[sect] == 0) { /* not protected */
- /* issue the single block erase command, 0x20 */
- flash_cmd (info->portwidth,
- (volatile unsigned
- char *) info->
- start[sect], 0,
- CHIP_CMD_ERASE1);
- /* issue the erase confirm command, 0xD0 */
- flash_cmd (info->portwidth,
- (volatile unsigned
- char *) info->
- start[sect], 0,
- CHIP_CMD_ERASE2);
- l_sect = sect;
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts ();
- /* poll for erasure completion */
- /* put flash into read status mode by writing 0x70 to it */
- flash_cmd (info->portwidth,
- addr, 0,
- CHIP_CMD_RD_STAT);
- /* setup the status register mask */
- mask = CHIP_STAT_RDY |
- (CHIP_STAT_RDY << 16);
- /* init. the timeout counter */
- start = get_timer (0);
- /* keep looping while the flash is not ready */
- /* exit the loop by timing out or the flash */
- /* becomes ready again */
- timeout = 0;
- while ((*
- (volatile unsigned
- long *) info->
- start[sect] & mask) !=
- mask) {
- /* has the timeout limit been reached? */
- if (get_timer (start)
- >
- CONFIG_SYS_FLASH_ERASE_TOUT)
- {
- /* timeout limit reached */
- printf ("Time out limit reached erasing sector at address %08lx\n", info->start[sect]);
- printf ("Continuing with next sector\n");
- timeout = 1;
- goto timed_out_error;
- }
- /* put flash into read status mode by writing 0x70 to it */
- flash_cmd (info->
- portwidth,
- addr, 0,
- CHIP_CMD_RD_STAT);
- }
- /* did we timeout? */
- timed_out_error:if (timeout == 0)
- {
- /* didn't timeout, so check the status register */
- /* create the status mask to check for errors */
- mask = CHIP_STAT_ECLBS;
- mask = mask | (mask <<
- 16);
- /* put flash into read status mode by writing 0x70 to it */
- flash_cmd (info->
- portwidth,
- addr, 0,
- CHIP_CMD_RD_STAT);
- /* are there any errors? */
- if ((*
- (volatile
- unsigned long *)
- info->
- start[sect] &
- mask) != 0) {
- /* We got an erasure error */
- printf ("Flash erasure error at address 0x%08lx\n", info->start[sect]);
- printf ("Continuing with next sector\n");
- /* reset the flash */
- flash_cmd
- (info->
- portwidth,
- addr,
- 0,
- CHIP_CMD_RST);
- }
- }
- /* erasure completed without errors */
- /* reset the flash */
- flash_cmd (info->portwidth,
- addr, 0,
- CHIP_CMD_RST);
- } /* end if not protected */
- } /* end for loop */
- printf ("Flash erasure done\n");
- return 0;
- } else {
- /* The Intel flash is not 16-bit wide */
- /* print and error message and return */
- /* NOTE: you can add routines here to handle other size flash */
- printf ("Error: Intel flash device is only %d-bits wide\n", info->chipwidth * 8);
- printf ("The erasure code only handles Intel 16-bit wide flash memory\n");
- return 1;
- }
- } else {
- /* Not Intel flash so return an error as a write timeout */
- /* NOTE: if it's another type flash, stick its routine here */
- printf ("Error: The flash device is not Intel type\n");
- printf ("The erasure code only supports Intel flash in a 32-bit port width\n");
- return 1;
- }
- }
-
- /* end 32-bit wide flash code */
- if ((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM)
- return 1; /* Rom can not be erased */
- if ((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) { /* RAM just copy 0s to RAM */
- for (sect = s_first; sect <= s_last; sect++) {
- int sector_size = info->size / info->sector_count;
-
- addr = (uchar *) (info->start[sect]);
- memset ((void *) addr, 0, sector_size);
- }
- return 0;
- }
-
- 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 ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) { /* Intel works spezial */
- return flash_erase_intel (info,
- (unsigned short) s_first,
- (unsigned short) s_last);
- }
-#if 0
- if ((info->flash_id == FLASH_UNKNOWN) || /* Flash is unknown to PPCBoot */
- (info->flash_id > FLASH_AMD_COMP)) {
- printf ("Can't erase unknown flash type %08lx - aborted\n",
- info->flash_id);
- return 1;
- }
-#endif
-
- 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");
- }
-
- l_sect = -1;
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts ();
-
- flash_cmd (info->portwidth, addr, 0x555, 0xAA); /* start erase routine */
- flash_cmd (info->portwidth, addr, 0x2AA, 0x55);
- flash_cmd (info->portwidth, addr, 0x555, 0x80);
- flash_cmd (info->portwidth, addr, 0x555, 0xAA);
- flash_cmd (info->portwidth, addr, 0x2AA, 0x55);
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect <= s_last; sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- addr = (uchar *) (info->start[sect]);
- flash_cmd (info->portwidth, addr, 0, 0x30);
- l_sect = sect;
- }
- }
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts ();
-
- /* wait at least 80us - let's wait 1 ms */
- udelay (1000);
-
- /*
- * We wait for the last triggered sector
- */
- if (l_sect < 0)
- goto DONE;
-
- start = get_timer (0);
- last = start;
- addr = (volatile unsigned char *) (info->start[l_sect]);
- /* broken for 2x16: TODO */
- while ((addr[0] & 0x80) != 0x80) {
- if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
- printf ("Timeout\n");
- return 1;
- }
- /* show that we're waiting */
- if ((now - last) > 1000) { /* every second */
- putc ('.');
- last = now;
- }
- }
-
- DONE:
- /* reset to read mode */
- addr = (volatile unsigned char *) info->start[0];
- flash_cmd (info->portwidth, addr, 0, 0xf0);
- flash_cmd (info->portwidth, addr, 0, 0xf0);
-
- printf (" done\n");
- return 0;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- */
-
-/* broken for 2x16: TODO */
-int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
-{
- ulong cp, wp, data;
- int i, l, rc;
-
-/* Commented out since the below code should work for 32-bit(2x 16 flash) */
-/* 10-16-2002 P. Marchese */
-/* if(info->portwidth==4) return 1; */
-/* if(info->portwidth==4) {
- printf ("- Warning: writting of 32Bit (2*16Bit i.e. 2*28F640J3A) not supported yet !!!! \n");
- return 1;
- }*/
-
- if ((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM)
- return 0;
- if ((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
- memcpy ((void *) addr, src, cnt);
- return 0;
- }
-
- 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));
-}
-
-/*-----------------------------------------------------------------------
- * Write a word to Flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- */
-/* broken for 2x16: TODO */
-static int write_word (flash_info_t * info, ulong dest, ulong data)
-{
- volatile unsigned char *addr = (uchar *) (info->start[0]);
- ulong start;
- int flag, i;
- ulong mask;
-
-/* modified so that it handles 32-bit(2x16 Intel flash programming */
-/* 10-16-2002 P. Marchese */
-
- if (info->portwidth == 4)
-/* {
- printf ("- Warning: writting of 32Bit (2*16Bit i.e. 2*28F640J3A) not supported yet !!!! \n");
- return 1;
- }*/
- {
- /* make sure it's Intel flash */
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
- /* yup! it's an Intel flash */
- /* is it 16-bits wide? */
- if (info->chipwidth == 2) {
- /* yup! it's 16-bits wide */
- /* so we know how to program it */
- /* reset the flash */
- flash_cmd (info->portwidth, addr, 0,
- CHIP_CMD_RST);
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts ();
- /* Clear the status register */
- flash_cmd (info->portwidth, addr, 0,
- CHIP_CMD_CLR_STAT);
- flash_cmd (info->portwidth, addr, 0,
- CHIP_CMD_RST);
- /* 1st cycle of word/byte program */
- /* write 0x40 to the location to program */
- flash_cmd (info->portwidth, (uchar *) dest, 0,
- CHIP_CMD_PROG);
- /* 2nd cycle of word/byte program */
- /* write the data to the destination address */
- *(ulong *) dest = data;
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts ();
- /* setup the status register mask */
- mask = CHIP_STAT_RDY | (CHIP_STAT_RDY << 16);
- /* put flash into read status mode by writing 0x70 to it */
- flash_cmd (info->portwidth, addr, 0,
- CHIP_CMD_RD_STAT);
- /* init. the timeout counter */
- start = get_timer (0);
- /* keep looping while the flash is not ready */
- /* exit the loop by timing out or the flash */
- /* becomes ready again */
-/* 11-13-2002 Paul Marchese */
-/* modified while loop conditional statement */
-/* because we were always timing out. */
-/* there is a type mismatch, "addr[0]" */
-/* returns a byte but "mask" is a 32-bit value */
- while ((*(volatile unsigned long *) info->
- start[0] & mask) != mask)
-/* original code */
-/* while (addr[0] & mask) != mask) */
- {
- /* has the timeout limit been reached? */
- if (get_timer (start) >
- CONFIG_SYS_FLASH_WRITE_TOUT) {
- /* timeout limit reached */
- printf ("Time out limit reached programming address %08lx with data %08lx\n", dest, data);
- /* reset the flash */
- flash_cmd (info->portwidth,
- addr, 0,
- CHIP_CMD_RST);
- return (1);
- }
- /* put flash into read status mode by writing 0x70 to it */
- flash_cmd (info->portwidth, addr, 0,
- CHIP_CMD_RD_STAT);
- }
- /* flash is ready, so check the status */
- /* create the status mask to check for errors */
- mask = CHIP_STAT_DPS | CHIP_STAT_VPPS |
- CHIP_STAT_PSLBS;
- mask = mask | (mask << 16);
- /* put flash into read status mode by writing 0x70 to it */
- flash_cmd (info->portwidth, addr, 0,
- CHIP_CMD_RD_STAT);
- /* are there any errors? */
- if ((addr[0] & mask) != 0) {
- /* We got a one of the following errors: */
- /* Voltage range, Device protect, or programming */
- /* return the error as a device timeout */
- /* put flash into read status mode by writing 0x70 to it */
- flash_cmd (info->portwidth, addr, 0,
- CHIP_CMD_RD_STAT);
- printf ("Flash programming error at address 0x%08lx\n", dest);
- printf ("Flash status register contains 0x%08lx\n", (unsigned long) addr[0]);
- /* reset the flash */
- flash_cmd (info->portwidth, addr, 0,
- CHIP_CMD_RST);
- return 1;
- }
- /* write completed without errors */
- /* reset the flash */
- flash_cmd (info->portwidth, addr, 0,
- CHIP_CMD_RST);
- return 0;
- } else {
- /* it's not 16-bits wide, so return an error as a write timeout */
- /* NOTE: you can add routines here to handle other size flash */
- printf ("Error: Intel flash device is only %d-bits wide\n", info->chipwidth * 8);
- printf ("The write code only handles Intel 16-bit wide flash memory\n");
- return 1;
- }
- } else {
- /* not Intel flash so return an error as a write timeout */
- /* NOTE: if it's another type flash, stick its routine here */
- printf ("Error: The flash device is not Intel type\n");
- printf ("The code only supports Intel flash in a 32-bit port width\n");
- return 1;
- }
- }
-
- /* end of 32-bit flash code */
- if ((info->flash_id & FLASH_TYPEMASK) == FLASH_ROM)
- return 1;
- if ((info->flash_id & FLASH_TYPEMASK) == FLASH_RAM) {
- *(unsigned long *) dest = data;
- return 0;
- }
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
- unsigned short low = data & 0xffff;
- unsigned short hi = (data >> 16) & 0xffff;
- int ret = write_word_intel ((bank_addr_t) dest, hi);
-
- if (!ret)
- ret = write_word_intel ((bank_addr_t) (dest + 2),
- low);
-
- return ret;
- }
-
- /* Check if Flash is (sufficiently) erased */
- if ((*((vu_long *) dest) & data) != data) {
- return (2);
- }
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts ();
-
- /* first, perform an unlock bypass command to speed up flash writes */
- addr[0x555] = 0xAA;
- addr[0x2AA] = 0x55;
- addr[0x555] = 0x20;
-
- /* write each byte out */
- for (i = 0; i < 4; i++) {
- char *data_ch = (char *) &data;
-
- addr[0] = 0xA0;
- *(((char *) dest) + i) = data_ch[i];
- udelay (10); /* XXX */
- }
-
- /* we're done, now do an unlock bypass reset */
- addr[0] = 0x90;
- addr[0] = 0x00;
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts ();
-
- /* data polling for D7 */
- start = get_timer (0);
- while ((*((vu_long *) dest) & 0x00800080) != (data & 0x00800080)) {
- if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
- return (1);
- }
- }
- return (0);
-}
generated by cgit (git 2.34.1) at 2024-12-30 20:46:48 +0000