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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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* Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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* See file CREDITS for list of people who contributed to this
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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DECLARE_GLOBAL_DATA_PTR;
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#ifndef CONFIG_SYS_OR_TIMING_FLASH_AT_50MHZ
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#define CONFIG_SYS_OR_TIMING_FLASH_AT_50MHZ (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
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OR_SCY_2_CLK | OR_EHTR | OR_BI)
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flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
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#if defined(CONFIG_ENV_IS_IN_FLASH)
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# ifndef CONFIG_ENV_ADDR
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# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
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# ifndef CONFIG_ENV_SIZE
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# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
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# ifndef CONFIG_ENV_SECT_SIZE
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# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
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/*-----------------------------------------------------------------------
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#define FLAG_PROTECT_SET 0x01
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#define FLAG_PROTECT_CLEAR 0x02
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/* Board support for 1 or 2 flash devices */
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#undef FLASH_PORT_WIDTH32
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#undef FLASH_PORT_WIDTH16
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#define FLASH_PORT_WIDTH8
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#ifdef FLASH_PORT_WIDTH16
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#define FLASH_PORT_WIDTH ushort
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#define FLASH_PORT_WIDTHV vu_short
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#elif FLASH_PORT_WIDTH32
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#define FLASH_PORT_WIDTH ulong
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#define FLASH_PORT_WIDTHV vu_long
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#else /* FLASH_PORT_WIDTH8 */
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#define FLASH_PORT_WIDTH uchar
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#define FLASH_PORT_WIDTHV vu_char
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#define FPW FLASH_PORT_WIDTH
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#define FPWV FLASH_PORT_WIDTHV
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/*-----------------------------------------------------------------------
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static ulong flash_get_size (FPWV * addr, flash_info_t * info);
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static int write_data (flash_info_t * info, ulong dest, FPW data);
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static void flash_get_offsets (ulong base, flash_info_t * info);
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/*-----------------------------------------------------------------------
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unsigned long flash_init (void)
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volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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volatile memctl8xx_t *memctl = &immap->im_memctl;
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unsigned long size_b0;
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#ifdef CONFIG_SYS_OR_TIMING_FLASH_AT_50MHZ
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int scy, trlx, flash_or_timing, clk_diff;
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scy = (CONFIG_SYS_OR_TIMING_FLASH_AT_50MHZ & OR_SCY_MSK) >> 4;
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if (CONFIG_SYS_OR_TIMING_FLASH_AT_50MHZ & OR_TRLX) {
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/* We assume that each 10MHz of bus clock require 1-clk SCY
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clk_diff = (gd->bus_clk / 1000000) - 50;
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/* We need proper rounding here. This is what the "+5" and "-5"
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scy += (clk_diff + 5) / 10;
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scy += (clk_diff - 5) / 10;
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/* For bus frequencies above 50MHz, we want to use relaxed
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if (gd->bus_clk >= 50000000)
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flash_or_timing = (scy << 4) | trlx |
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(CONFIG_SYS_OR_TIMING_FLASH_AT_50MHZ & ~(OR_TRLX | OR_SCY_MSK));
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/* Init: no FLASHes known */
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for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
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flash_info[i].flash_id = FLASH_UNKNOWN;
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/* Static FLASH Bank configuration here - FIXME XXX */
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size_b0 = flash_get_size ((FPW *) FLASH_BASE0_PRELIM, &flash_info[0]);
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if (flash_info[0].flash_id == FLASH_UNKNOWN) {
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printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
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size_b0, size_b0 << 20);
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/* Remap FLASH according to real size */
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#ifndef CONFIG_SYS_OR_TIMING_FLASH_AT_50MHZ
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memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & OR_AM_MSK);
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memctl->memc_or0 = flash_or_timing | (-size_b0 & OR_AM_MSK);
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memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_PS_8 | BR_MS_GPCM | BR_V;
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/* Re-do sizing to get full correct info */
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size_b0 = flash_get_size ((FPW *) CONFIG_SYS_FLASH_BASE, &flash_info[0]);
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flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]);
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#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
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/* monitor protection ON by default */
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(void) flash_protect (FLAG_PROTECT_SET,
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CONFIG_SYS_MONITOR_BASE,
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CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
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#ifdef CONFIG_ENV_IS_IN_FLASH
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/* ENV protection ON by default */
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flash_protect (FLAG_PROTECT_SET,
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CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
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flash_info[0].size = size_b0;
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/*-----------------------------------------------------------------------
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static void flash_get_offsets (ulong base, flash_info_t * info)
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if (info->flash_id == FLASH_UNKNOWN) {
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if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
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for (i = 0; i < info->sector_count; i++) {
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info->start[i] = base + (i * 0x00020000);
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/*-----------------------------------------------------------------------
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void flash_print_info (flash_info_t * info)
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if (info->flash_id == FLASH_UNKNOWN) {
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printf ("missing or unknown FLASH type\n");
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switch (info->flash_id & FLASH_VENDMASK) {
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case FLASH_MAN_INTEL:
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printf ("Unknown Vendor ");
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switch (info->flash_id & FLASH_TYPEMASK) {
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case FLASH_28F320J3A:
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printf ("28F320J3A\n");
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case FLASH_28F640J3A:
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printf ("28F640J3A\n");
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case FLASH_28F128J3A:
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printf ("28F128J3A\n");
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printf ("Unknown Chip Type\n");
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printf (" Size: %ld MB in %d Sectors\n",
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info->size >> 20, info->sector_count);
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printf (" Sector Start Addresses:");
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for (i = 0; i < info->sector_count; ++i) {
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info->protect[i] ? " (RO)" : " ");
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/*-----------------------------------------------------------------------
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/*-----------------------------------------------------------------------
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* The following code cannot be run from FLASH!
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static ulong flash_get_size (FPWV * addr, flash_info_t * info)
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addr[0] = (FPW) 0x00900090;
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debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);
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case (FPW) INTEL_MANUFACT:
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info->flash_id = FLASH_MAN_INTEL;
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info->flash_id = FLASH_UNKNOWN;
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info->sector_count = 0;
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addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
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return (0); /* no or unknown flash */
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#ifdef FLASH_PORT_WIDTH8
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value = addr[2]; /* device ID */
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value = addr[1]; /* device ID */
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debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);
296
case (FPW) INTEL_ID_28F320J3A:
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info->flash_id += FLASH_28F320J3A;
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info->sector_count = 32;
299
info->size = 0x00400000;
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case (FPW) INTEL_ID_28F640J3A:
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info->flash_id += FLASH_28F640J3A;
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info->sector_count = 64;
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info->size = 0x00800000;
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case (FPW) INTEL_ID_28F128J3A:
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info->flash_id += FLASH_28F128J3A;
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info->sector_count = 128;
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info->size = 0x01000000;
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break; /* => 16 MB */
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info->flash_id = FLASH_UNKNOWN;
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if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
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printf ("** ERROR: sector count %d > max (%d) **\n",
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info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
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info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
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addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
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/*-----------------------------------------------------------------------
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int flash_erase (flash_info_t * info, int s_first, int s_last)
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int flag, prot, sect;
337
ulong type, start, now, last;
340
if ((s_first < 0) || (s_first > s_last)) {
341
if (info->flash_id == FLASH_UNKNOWN) {
342
printf ("- missing\n");
344
printf ("- no sectors to erase\n");
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type = (info->flash_id & FLASH_VENDMASK);
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if ((type != FLASH_MAN_INTEL)) {
351
printf ("Can't erase unknown flash type %08lx - aborted\n",
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for (sect = s_first; sect <= s_last; ++sect) {
358
if (info->protect[sect]) {
364
printf ("- Warning: %d protected sectors will not be erased!\n",
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start = get_timer (0);
372
/* Start erase on unprotected sectors */
373
for (sect = s_first; sect <= s_last; sect++) {
374
if (info->protect[sect] == 0) { /* not protected */
375
FPWV *addr = (FPWV *) (info->start[sect]);
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/* Disable interrupts which might cause a timeout here */
379
flag = disable_interrupts ();
381
*addr = (FPW) 0x00500050; /* clear status register */
382
*addr = (FPW) 0x00200020; /* erase setup */
383
*addr = (FPW) 0x00D000D0; /* erase confirm */
385
/* re-enable interrupts if necessary */
387
enable_interrupts ();
389
/* wait at least 80us - let's wait 1 ms */
392
while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
393
if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
394
printf ("Timeout\n");
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*addr = (FPW) 0x00B000B0; /* suspend erase */
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*addr = (FPW) 0x00FF00FF; /* reset to read mode */
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/* show that we're waiting */
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if ((now - last) > 1000) { /* every second */
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*addr = (FPW) 0x00FF00FF; /* reset to read mode */
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/*-----------------------------------------------------------------------
416
* Copy memory to flash, returns:
419
* 2 - Flash not erased
420
* 4 - Flash not identified
423
int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
428
int i, l, rc, port_width;
430
if (info->flash_id == FLASH_UNKNOWN) {
433
/* get lower word aligned address */
434
#ifdef FLASH_PORT_WIDTH16
437
#elif defined(FLASH_PORT_WIDTH32)
446
* handle unaligned start bytes
448
if ((l = addr - wp) != 0) {
450
for (i = 0, cp = wp; i < l; ++i, ++cp) {
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data = (data << 8) | (*(uchar *) cp);
453
for (; i < port_width && cnt > 0; ++i) {
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data = (data << 8) | *src++;
458
for (; cnt == 0 && i < port_width; ++i, ++cp) {
459
data = (data << 8) | (*(uchar *) cp);
462
if ((rc = write_data (info, wp, data)) != 0) {
469
* handle word aligned part
471
while (cnt >= port_width) {
473
for (i = 0; i < port_width; ++i) {
474
data = (data << 8) | *src++;
476
if ((rc = write_data (info, wp, data)) != 0) {
488
* handle unaligned tail bytes
491
for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) {
492
data = (data << 8) | *src++;
495
for (; i < port_width; ++i, ++cp) {
496
data = (data << 8) | (*(uchar *) cp);
499
return (write_data (info, wp, data));
502
/*-----------------------------------------------------------------------
503
* Write a word or halfword to Flash, returns:
506
* 2 - Flash not erased
508
static int write_data (flash_info_t * info, ulong dest, FPW data)
510
FPWV *addr = (FPWV *) dest;
515
/* Check if Flash is (sufficiently) erased */
516
if ((*addr & data) != data) {
517
printf ("not erased at %08lx (%x)\n", (ulong) addr, *addr);
520
/* Disable interrupts which might cause a timeout here */
521
flag = disable_interrupts ();
523
*addr = (FPW) 0x00400040; /* write setup */
526
/* re-enable interrupts if necessary */
528
enable_interrupts ();
530
start = get_timer (0);
532
while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
533
if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
534
*addr = (FPW) 0x00FF00FF; /* restore read mode */
539
*addr = (FPW) 0x00FF00FF; /* restore read mode */