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https://github.com/brain-hackers/u-boot-brain
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![Wolfgang Denk](/assets/img/avatar_default.png)
This commit gets rid of a huge amount of silly white-space issues. Especially, all sequences of SPACEs followed by TAB characters get removed (unless they appear in print statements). Also remove all embedded "vim:" and "vi:" statements which hide indentation problems. Signed-off-by: Wolfgang Denk <wd@denx.de>
720 lines
19 KiB
C
720 lines
19 KiB
C
/*
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* (C) Copyright 2000
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* Changes for MATRIX Vision MVsensor (C) Copyright 2001
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* MATRIX Vision GmbH / hg, info@matrix-vision.de
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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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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*
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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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*
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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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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <mpc8xx.h>
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#undef MVDEBUG
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#ifdef MVDEBUG
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#define mvdebug debug
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#else
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#define mvdebug(p) do {} while (0)
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#endif
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flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
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#ifdef CONFIG_MVS_16BIT_FLASH
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#define FLASH_DATA_MASK 0xffff
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#define FLASH_SHIFT 0
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#else
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#define FLASH_DATA_MASK 0xffffffff
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#define FLASH_SHIFT 1
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#endif
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/*-----------------------------------------------------------------------
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* Functions
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*/
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static ulong flash_get_size (vu_long *address, flash_info_t *info);
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static int write_word (flash_info_t *info, ulong dest, ulong data);
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static void flash_get_offsets (ulong base, flash_info_t *info);
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/*-----------------------------------------------------------------------
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*/
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unsigned long flash_init (void)
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{
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volatile immap_t *immap = (immap_t *)CFG_IMMR;
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volatile memctl8xx_t *memctl = &immap->im_memctl;
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unsigned long size_b0, size_b1;
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int i;
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/* Init: no FLASHes known */
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for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
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flash_info[i].flash_id = FLASH_UNKNOWN;
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}
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/* Static FLASH Bank configuration here - FIXME XXX */
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size_b0 = flash_get_size((vu_long *)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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}
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#if defined (FLASH_BASE1_PRELIM)
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size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
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if (size_b1 > size_b0) {
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printf ("## ERROR: "
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"Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
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size_b1, size_b1<<20,
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size_b0, size_b0<<20
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);
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flash_info[0].flash_id = FLASH_UNKNOWN;
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flash_info[1].flash_id = FLASH_UNKNOWN;
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flash_info[0].sector_count = -1;
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flash_info[1].sector_count = -1;
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flash_info[0].size = 0;
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flash_info[1].size = 0;
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return (0);
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}
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#else
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size_b1 = 0;
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#endif
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/* Remap FLASH according to real size */
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memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000);
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#ifdef CONFIG_MVS_16BIT_FLASH
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memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_PS_16 | BR_MS_GPCM | BR_V;
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#else
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memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_PS_32 | BR_MS_GPCM | BR_V;
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#endif
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/* Re-do sizing to get full correct info */
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size_b0 = flash_get_size((vu_long *)CFG_FLASH_BASE, &flash_info[0]);
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flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
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/* monitor protection ON by default */
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flash_protect(FLAG_PROTECT_SET,
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CFG_FLASH_BASE,
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CFG_FLASH_BASE+monitor_flash_len-1,
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&flash_info[0]);
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if (size_b1) {
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memctl->memc_or1 = CFG_OR_TIMING_FLASH | (-size_b1 & 0xFFFF8000);
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#ifdef CONFIG_MVS_16BIT_FLASH
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memctl->memc_br1 = ((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) |
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BR_PS_16 | BR_MS_GPCM | BR_V;
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#else
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memctl->memc_br1 = ((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) |
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BR_PS_32 | BR_MS_GPCM | BR_V;
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#endif
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/* Re-do sizing to get full correct info */
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size_b1 = flash_get_size((vu_long *)(CFG_FLASH_BASE + size_b0),
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&flash_info[1]);
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flash_get_offsets (CFG_FLASH_BASE + size_b0, &flash_info[1]);
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/* monitor protection ON by default */
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flash_protect(FLAG_PROTECT_SET,
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CFG_FLASH_BASE,
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CFG_FLASH_BASE+monitor_flash_len-1,
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&flash_info[1]);
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} else {
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memctl->memc_br1 = 0; /* invalidate bank */
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flash_info[1].flash_id = FLASH_UNKNOWN;
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flash_info[1].sector_count = -1;
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}
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flash_info[0].size = size_b0;
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flash_info[1].size = size_b1;
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return (size_b0 + size_b1);
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}
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/*-----------------------------------------------------------------------
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*/
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static void flash_get_offsets (ulong base, flash_info_t *info)
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{
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int i;
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/* set up sector start address table */
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if (info->flash_id & FLASH_BTYPE)
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{ /* bottom boot sector types - these are the useful ones! */
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/* set sector offsets for bottom boot block type */
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if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B)
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{ /* AMDLV320B has 8 x 8k bottom boot sectors */
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for (i = 0; i < 8; i++) /* +8k */
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info->start[i] = base + (i * (0x00002000 << FLASH_SHIFT));
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for (; i < info->sector_count; i++) /* +64k */
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info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)) - (0x00070000 << FLASH_SHIFT);
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}
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else
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{ /* other types have 4 bottom boot sectors (16,8,8,32) */
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i = 0;
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info->start[i++] = base + 0x00000000; /* - */
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info->start[i++] = base + (0x00004000 << FLASH_SHIFT); /* +16k */
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info->start[i++] = base + (0x00006000 << FLASH_SHIFT); /* +8k */
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info->start[i++] = base + (0x00008000 << FLASH_SHIFT); /* +8k */
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info->start[i++] = base + (0x00010000 << FLASH_SHIFT); /* +32k */
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for (; i < info->sector_count; i++) /* +64k */
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info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT)) - (0x00030000 << FLASH_SHIFT);
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}
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}
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else
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{ /* top boot sector types - not so useful */
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/* set sector offsets for top boot block type */
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if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T)
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{ /* AMDLV320T has 8 x 8k top boot sectors */
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for (i = 0; i < info->sector_count - 8; i++) /* +64k */
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info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT));
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for (; i < info->sector_count; i++) /* +8k */
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info->start[i] = base + (i * (0x00002000 << FLASH_SHIFT));
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}
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else
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{ /* other types have 4 top boot sectors (32,8,8,16) */
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for (i = 0; i < info->sector_count - 4; i++) /* +64k */
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info->start[i] = base + (i * (0x00010000 << FLASH_SHIFT));
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info->start[i++] = base + info->size - (0x00010000 << FLASH_SHIFT); /* -32k */
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info->start[i++] = base + info->size - (0x00008000 << FLASH_SHIFT); /* -8k */
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info->start[i++] = base + info->size - (0x00006000 << FLASH_SHIFT); /* -8k */
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info->start[i] = base + info->size - (0x00004000 << FLASH_SHIFT); /* -16k */
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}
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}
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}
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/*-----------------------------------------------------------------------
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*/
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void flash_print_info (flash_info_t *info)
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{
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int i;
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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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return;
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}
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switch (info->flash_id & FLASH_VENDMASK) {
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case FLASH_MAN_AMD: printf ("AMD "); break;
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case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
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case FLASH_MAN_STM: printf ("ST "); break;
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default: printf ("Unknown Vendor "); break;
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}
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switch (info->flash_id & FLASH_TYPEMASK) {
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case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
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break;
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case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n");
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break;
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case FLASH_STMW320DB: printf ("M29W320B (32 Mbit, bottom boot sect)\n");
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break;
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case FLASH_STMW320DT: printf ("M29W320T (32 Mbit, top boot sector)\n");
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break;
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default: printf ("Unknown Chip Type\n");
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break;
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}
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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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if ((i % 5) == 0)
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printf ("\n ");
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printf (" %08lX%s",
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info->start[i],
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info->protect[i] ? " (RO)" : " "
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);
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}
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printf ("\n");
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}
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/*-----------------------------------------------------------------------
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*/
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/*-----------------------------------------------------------------------
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*/
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/*
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* The following code cannot be run from FLASH!
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*/
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#define AMD_ID_LV160T_MVS (AMD_ID_LV160T & FLASH_DATA_MASK)
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#define AMD_ID_LV160B_MVS (AMD_ID_LV160B & FLASH_DATA_MASK)
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#define AMD_ID_LV320T_MVS (AMD_ID_LV320T & FLASH_DATA_MASK)
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#define AMD_ID_LV320B_MVS (AMD_ID_LV320B & FLASH_DATA_MASK)
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#define STM_ID_W320DT_MVS (STM_ID_29W320DT & FLASH_DATA_MASK)
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#define STM_ID_W320DB_MVS (STM_ID_29W320DB & FLASH_DATA_MASK)
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#define AMD_MANUFACT_MVS (AMD_MANUFACT & FLASH_DATA_MASK)
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#define FUJ_MANUFACT_MVS (FUJ_MANUFACT & FLASH_DATA_MASK)
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#define STM_MANUFACT_MVS (STM_MANUFACT & FLASH_DATA_MASK)
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#define AUTOSELECT_ADDR1 0x0555
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#define AUTOSELECT_ADDR2 0x02AA
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#define AUTOSELECT_ADDR3 AUTOSELECT_ADDR1
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#define AUTOSELECT_DATA1 (0x00AA00AA & FLASH_DATA_MASK)
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#define AUTOSELECT_DATA2 (0x00550055 & FLASH_DATA_MASK)
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#define AUTOSELECT_DATA3 (0x00900090 & FLASH_DATA_MASK)
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#define RESET_BANK_DATA (0x00F000F0 & FLASH_DATA_MASK)
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static ulong flash_get_size (vu_long *address, flash_info_t *info)
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{
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short i;
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#ifdef CONFIG_MVS_16BIT_FLASH
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ushort value;
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vu_short *addr = (vu_short *)address;
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#else
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ulong value;
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vu_long *addr = (vu_long *)address;
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#endif
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ulong base = (ulong)address;
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/* Write auto select command: read Manufacturer ID */
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addr[AUTOSELECT_ADDR1] = AUTOSELECT_DATA1;
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addr[AUTOSELECT_ADDR2] = AUTOSELECT_DATA2;
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addr[AUTOSELECT_ADDR3] = AUTOSELECT_DATA3;
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value = addr[0]; /* manufacturer ID */
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switch (value) {
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case AMD_MANUFACT_MVS:
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info->flash_id = FLASH_MAN_AMD;
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break;
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case FUJ_MANUFACT_MVS:
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info->flash_id = FLASH_MAN_FUJ;
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break;
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case STM_MANUFACT_MVS:
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info->flash_id = FLASH_MAN_STM;
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break;
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default:
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info->flash_id = FLASH_UNKNOWN;
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info->sector_count = 0;
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info->size = 0;
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return (0); /* no or unknown flash */
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}
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value = addr[1]; /* device ID */
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switch (value) {
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case AMD_ID_LV160T_MVS:
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info->flash_id += FLASH_AM160T;
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info->sector_count = 37;
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info->size = (0x00200000 << FLASH_SHIFT);
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break; /* => 2 or 4 MB */
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case AMD_ID_LV160B_MVS:
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info->flash_id += FLASH_AM160B;
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info->sector_count = 37;
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info->size = (0x00200000 << FLASH_SHIFT);
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break; /* => 2 or 4 MB */
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case AMD_ID_LV320T_MVS:
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info->flash_id += FLASH_AM320T;
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info->sector_count = 71;
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info->size = (0x00400000 << FLASH_SHIFT);
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break; /* => 4 or 8 MB */
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case AMD_ID_LV320B_MVS:
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info->flash_id += FLASH_AM320B;
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info->sector_count = 71;
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info->size = (0x00400000 << FLASH_SHIFT);
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break; /* => 4 or 8MB */
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case STM_ID_W320DT_MVS:
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info->flash_id += FLASH_STMW320DT;
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info->sector_count = 67;
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info->size = (0x00400000 << FLASH_SHIFT);
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break; /* => 4 or 8 MB */
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case STM_ID_W320DB_MVS:
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info->flash_id += FLASH_STMW320DB;
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info->sector_count = 67;
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info->size = (0x00400000 << FLASH_SHIFT);
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break; /* => 4 or 8MB */
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default:
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info->flash_id = FLASH_UNKNOWN;
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return (0); /* => no or unknown flash */
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}
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/* set up sector start address table */
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flash_get_offsets (base, info);
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/* check for protected sectors */
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for (i = 0; i < info->sector_count; i++) {
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/* read sector protection at sector address, (A7 .. A0) = 0x02 */
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/* D0 = 1 if protected */
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#ifdef CONFIG_MVS_16BIT_FLASH
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addr = (vu_short *)(info->start[i]);
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#else
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addr = (vu_long *)(info->start[i]);
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#endif
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info->protect[i] = addr[2] & 1;
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}
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/*
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* Prevent writes to uninitialized FLASH.
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*/
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if (info->flash_id != FLASH_UNKNOWN) {
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#ifdef CONFIG_MVS_16BIT_FLASH
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addr = (vu_short *)info->start[0];
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#else
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addr = (vu_long *)info->start[0];
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#endif
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*addr = RESET_BANK_DATA; /* reset bank */
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}
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return (info->size);
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}
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/*-----------------------------------------------------------------------
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*/
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#define ERASE_ADDR1 0x0555
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#define ERASE_ADDR2 0x02AA
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#define ERASE_ADDR3 ERASE_ADDR1
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#define ERASE_ADDR4 ERASE_ADDR1
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#define ERASE_ADDR5 ERASE_ADDR2
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#define ERASE_DATA1 (0x00AA00AA & FLASH_DATA_MASK)
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#define ERASE_DATA2 (0x00550055 & FLASH_DATA_MASK)
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#define ERASE_DATA3 (0x00800080 & FLASH_DATA_MASK)
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#define ERASE_DATA4 ERASE_DATA1
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#define ERASE_DATA5 ERASE_DATA2
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#define ERASE_SECTOR_DATA (0x00300030 & FLASH_DATA_MASK)
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#define ERASE_CHIP_DATA (0x00100010 & FLASH_DATA_MASK)
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#define ERASE_CONFIRM_DATA (0x00800080 & FLASH_DATA_MASK)
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int flash_erase (flash_info_t *info, int s_first, int s_last)
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{
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#ifdef CONFIG_MVS_16BIT_FLASH
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vu_short *addr = (vu_short *)(info->start[0]);
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#else
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vu_long *addr = (vu_long *)(info->start[0]);
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#endif
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int flag, prot, sect, l_sect;
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ulong start, now, last;
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if ((s_first < 0) || (s_first > s_last)) {
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if (info->flash_id == FLASH_UNKNOWN) {
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printf ("- missing\n");
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} else {
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printf ("- no sectors to erase\n");
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}
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return 1;
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}
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if ((info->flash_id == FLASH_UNKNOWN) ||
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(info->flash_id > FLASH_AMD_COMP)) {
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printf ("Can't erase unknown flash type %08lx - aborted\n",
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info->flash_id);
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return 1;
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}
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prot = 0;
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for (sect=s_first; sect<=s_last; ++sect) {
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if (info->protect[sect]) {
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prot++;
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}
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}
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if (prot) {
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printf ("- Warning: %d protected sectors will not be erased!\n",
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prot);
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} else {
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printf ("\n");
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}
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l_sect = -1;
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/* Disable interrupts which might cause a timeout here */
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flag = disable_interrupts();
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addr[ERASE_ADDR1] = ERASE_DATA1;
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addr[ERASE_ADDR2] = ERASE_DATA2;
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|
addr[ERASE_ADDR3] = ERASE_DATA3;
|
|
addr[ERASE_ADDR4] = ERASE_DATA4;
|
|
addr[ERASE_ADDR5] = ERASE_DATA5;
|
|
|
|
/* Start erase on unprotected sectors */
|
|
for (sect = s_first; sect<=s_last; sect++) {
|
|
if (info->protect[sect] == 0) { /* not protected */
|
|
#ifdef CONFIG_MVS_16BIT_FLASH
|
|
addr = (vu_short *)(info->start[sect]);
|
|
#else
|
|
addr = (vu_long *)(info->start[sect]);
|
|
#endif
|
|
addr[0] = ERASE_SECTOR_DATA;
|
|
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;
|
|
#ifdef CONFIG_MVS_16BIT_FLASH
|
|
addr = (vu_short *)(info->start[l_sect]);
|
|
#else
|
|
addr = (vu_long *)(info->start[l_sect]);
|
|
#endif
|
|
while ((addr[0] & ERASE_CONFIRM_DATA) != ERASE_CONFIRM_DATA) {
|
|
if ((now = get_timer(start)) > CFG_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 */
|
|
#ifdef CONFIG_MVS_16BIT_FLASH
|
|
addr = (vu_short *)info->start[0];
|
|
#else
|
|
addr = (vu_long *)info->start[0];
|
|
#endif
|
|
addr[0] = RESET_BANK_DATA; /* reset bank */
|
|
|
|
printf (" done\n");
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Copy memory to flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
|
|
int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
|
{
|
|
#define BUFF_INC 4
|
|
ulong cp, wp, data;
|
|
int i, l, rc;
|
|
|
|
mvdebug (("+write_buff %p ==> 0x%08lx, count = 0x%08lx\n", src, addr, cnt));
|
|
|
|
wp = (addr & ~3); /* get lower word aligned address */
|
|
/*
|
|
* handle unaligned start bytes
|
|
*/
|
|
if ((l = addr - wp) != 0) {
|
|
mvdebug ((" handle unaligned start bytes (cnt = 0x%08%lx)\n", cnt));
|
|
data = 0;
|
|
for (i=0, cp=wp; i<l; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
}
|
|
for (; i<BUFF_INC && cnt>0; ++i) {
|
|
data = (data << 8) | *src++;
|
|
--cnt;
|
|
++cp;
|
|
}
|
|
for (; cnt==0 && i<BUFF_INC; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
}
|
|
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += BUFF_INC;
|
|
}
|
|
|
|
/*
|
|
* handle (half)word aligned part
|
|
*/
|
|
mvdebug ((" handle word aligned part (cnt = 0x%08%lx)\n", cnt));
|
|
while (cnt >= BUFF_INC) {
|
|
data = 0;
|
|
for (i=0; i<BUFF_INC; ++i) {
|
|
data = (data << 8) | *src++;
|
|
}
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += BUFF_INC;
|
|
cnt -= BUFF_INC;
|
|
}
|
|
|
|
if (cnt == 0) {
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* handle unaligned tail bytes
|
|
*/
|
|
mvdebug ((" handle unaligned tail bytes (cnt = 0x%08%lx)\n", cnt));
|
|
data = 0;
|
|
for (i=0, cp=wp; i<BUFF_INC && cnt>0; ++i, ++cp) {
|
|
data = (data << 8) | *src++;
|
|
--cnt;
|
|
}
|
|
for (; i<BUFF_INC; ++i, ++cp) {
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
}
|
|
|
|
return (write_word(info, wp, data));
|
|
}
|
|
|
|
#define WRITE_ADDR1 0x0555
|
|
#define WRITE_ADDR2 0x02AA
|
|
#define WRITE_ADDR3 WRITE_ADDR1
|
|
|
|
#define WRITE_DATA1 (0x00AA00AA & FLASH_DATA_MASK)
|
|
#define WRITE_DATA2 (0x00550055 & FLASH_DATA_MASK)
|
|
#define WRITE_DATA3 (0x00A000A0 & FLASH_DATA_MASK)
|
|
|
|
#define WRITE_CONFIRM_DATA ERASE_CONFIRM_DATA
|
|
|
|
#ifndef CONFIG_MVS_16BIT_FLASH
|
|
/*-----------------------------------------------------------------------
|
|
* Write a word to Flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
static int write_word (flash_info_t *info, ulong dest, ulong data)
|
|
{
|
|
vu_long *addr = (vu_long *)(info->start[0]);
|
|
ulong start;
|
|
int flag;
|
|
|
|
mvdebug (("+write_word (to 0x%08lx)\n", dest));
|
|
/* 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();
|
|
|
|
addr[WRITE_ADDR1] = WRITE_DATA1;
|
|
addr[WRITE_ADDR2] = WRITE_DATA2;
|
|
addr[WRITE_ADDR3] = WRITE_DATA3;
|
|
|
|
*((vu_long *)dest) = data;
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
/* data polling for D7 */
|
|
start = get_timer (0);
|
|
addr = (vu_long *)dest;
|
|
while ((*addr & WRITE_CONFIRM_DATA) != (data & WRITE_CONFIRM_DATA)) {
|
|
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
|
|
return (1);
|
|
}
|
|
}
|
|
|
|
mvdebug (("-write_word\n"));
|
|
return (0);
|
|
}
|
|
#else /* CONFIG_MVS_16BIT_FLASH */
|
|
/*-----------------------------------------------------------------------
|
|
* Write a halfword to Flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
static int write_halfword (flash_info_t *info, ulong dest, ushort data)
|
|
{
|
|
vu_short *addr = (vu_short *)(info->start[0]);
|
|
ulong start;
|
|
int flag;
|
|
|
|
mvdebug (("+write_halfword (to 0x%08lx)\n", dest));
|
|
/* Check if Flash is (sufficiently) erased */
|
|
if ((*((vu_short *)dest) & data) != data) {
|
|
return (2);
|
|
}
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
addr[WRITE_ADDR1] = WRITE_DATA1;
|
|
addr[WRITE_ADDR2] = WRITE_DATA2;
|
|
addr[WRITE_ADDR3] = WRITE_DATA3;
|
|
|
|
*((vu_short *)dest) = data;
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
/* data polling for D7 */
|
|
start = get_timer (0);
|
|
addr = (vu_short *)dest;
|
|
while ((*addr & WRITE_CONFIRM_DATA) != (data & WRITE_CONFIRM_DATA)) {
|
|
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
|
|
return (1);
|
|
}
|
|
}
|
|
mvdebug (("-write_halfword\n"));
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Write a word to Flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
static int write_word (flash_info_t *info, ulong dest, ulong data)
|
|
{
|
|
int result = 0;
|
|
|
|
if (write_halfword (info, dest, (data & ~FLASH_DATA_MASK) >> 16) == 0)
|
|
{
|
|
dest += 2;
|
|
data = data & FLASH_DATA_MASK;
|
|
result = write_halfword (info, dest, data);
|
|
}
|
|
return result;
|
|
}
|
|
#endif
|
|
/*-----------------------------------------------------------------------
|
|
*/
|