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-rw-r--r--arch_msm7k/nand.c630
1 files changed, 0 insertions, 630 deletions
diff --git a/arch_msm7k/nand.c b/arch_msm7k/nand.c
deleted file mode 100644
index ea123f0..0000000
--- a/arch_msm7k/nand.c
+++ /dev/null
@@ -1,630 +0,0 @@
-/*
- * Copyright (c) 2008, Google Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <boot/boot.h>
-#include <boot/flash.h>
-
-#include <msm7k/dmov.h>
-#include <msm7k/nand.h>
-#include <msm7k/shared.h>
-
-#define VERBOSE 0
-
-typedef struct dmov_ch dmov_ch;
-struct dmov_ch
-{
- volatile unsigned cmd;
- volatile unsigned result;
- volatile unsigned status;
- volatile unsigned config;
-};
-
-static void dmov_prep_ch(dmov_ch *ch, unsigned id)
-{
- ch->cmd = DMOV_CMD_PTR(id);
- ch->result = DMOV_RSLT(id);
- ch->status = DMOV_STATUS(id);
- ch->config = DMOV_CONFIG(id);
-}
-
-#define SRC_CRCI_NAND_CMD CMD_SRC_CRCI(DMOV_NAND_CRCI_CMD)
-#define DST_CRCI_NAND_CMD CMD_DST_CRCI(DMOV_NAND_CRCI_CMD)
-#define SRC_CRCI_NAND_DATA CMD_SRC_CRCI(DMOV_NAND_CRCI_DATA)
-#define DST_CRCI_NAND_DATA CMD_DST_CRCI(DMOV_NAND_CRCI_DATA)
-
-static unsigned CFG0, CFG1;
-
-#define CFG1_WIDE_FLASH (1U << 1)
-
-#define paddr(n) ((unsigned) (n))
-
-static int dmov_exec_cmdptr(unsigned id, unsigned *ptr)
-{
- dmov_ch ch;
- unsigned n;
-
- dmov_prep_ch(&ch, id);
-
- writel(DMOV_CMD_PTR_LIST | DMOV_CMD_ADDR(paddr(ptr)), ch.cmd);
-
- while(!(readl(ch.status) & DMOV_STATUS_RSLT_VALID)) ;
-
- n = readl(ch.status);
- while(DMOV_STATUS_RSLT_COUNT(n)) {
- n = readl(ch.result);
- if(n != 0x80000002) {
- dprintf("ERROR: result: %x\n", n);
- dprintf("ERROR: flush: %x %x %x %x\n",
- readl(DMOV_FLUSH0(DMOV_NAND_CHAN)),
- readl(DMOV_FLUSH1(DMOV_NAND_CHAN)),
- readl(DMOV_FLUSH2(DMOV_NAND_CHAN)),
- readl(DMOV_FLUSH3(DMOV_NAND_CHAN)));
- }
- n = readl(ch.status);
- }
-
- return 0;
-}
-
-static unsigned flash_maker = 0;
-static unsigned flash_device = 0;
-
-static void flash_read_id(dmov_s *cmdlist, unsigned *ptrlist)
-{
- dmov_s *cmd = cmdlist;
- unsigned *ptr = ptrlist;
- unsigned *data = ptrlist + 4;
-
- data[0] = 0 | 4;
- data[1] = NAND_CMD_FETCH_ID;
- data[2] = 1;
- data[3] = 0;
- data[4] = 0;
-
- cmd[0].cmd = 0 | CMD_OCB;
- cmd[0].src = paddr(&data[0]);
- cmd[0].dst = NAND_FLASH_CHIP_SELECT;
- cmd[0].len = 4;
-
- cmd[1].cmd = DST_CRCI_NAND_CMD;
- cmd[1].src = paddr(&data[1]);
- cmd[1].dst = NAND_FLASH_CMD;
- cmd[1].len = 4;
-
- cmd[2].cmd = 0;
- cmd[2].src = paddr(&data[2]);
- cmd[2].dst = NAND_EXEC_CMD;
- cmd[2].len = 4;
-
- cmd[3].cmd = SRC_CRCI_NAND_DATA;
- cmd[3].src = NAND_FLASH_STATUS;
- cmd[3].dst = paddr(&data[3]);
- cmd[3].len = 4;
-
- cmd[4].cmd = CMD_OCU | CMD_LC;
- cmd[4].src = NAND_READ_ID;
- cmd[4].dst = paddr(&data[4]);
- cmd[4].len = 4;
-
- ptr[0] = (paddr(cmd) >> 3) | CMD_PTR_LP;
-
- dmov_exec_cmdptr(DMOV_NAND_CHAN, ptr);
-
-#if VERBOSE
- dprintf("status: %x\n", data[3]);
-#endif
- dprintf("nandid: %x maker %b device %b\n",
- data[4], data[4] & 0xff, (data[4] >> 8) & 0xff);
-
- flash_maker = data[4] & 0xff;
- flash_device = (data[4] >> 8) & 0xff;
-}
-
-static int flash_erase_block(dmov_s *cmdlist, unsigned *ptrlist, unsigned page)
-{
- dmov_s *cmd = cmdlist;
- unsigned *ptr = ptrlist;
- unsigned *data = ptrlist + 4;
-
- /* only allow erasing on block boundaries */
- if(page & 63) return -1;
-
- data[0] = NAND_CMD_BLOCK_ERASE;
- data[1] = page;
- data[2] = 0;
- data[3] = 0 | 4;
- data[4] = 1;
- data[5] = 0xeeeeeeee;
- data[6] = CFG0 & (~(7 << 6)); /* CW_PER_PAGE = 0 */
- data[7] = CFG1;
-
- cmd[0].cmd = DST_CRCI_NAND_CMD | CMD_OCB;
- cmd[0].src = paddr(&data[0]);
- cmd[0].dst = NAND_FLASH_CMD;
- cmd[0].len = 16;
-
- cmd[1].cmd = 0;
- cmd[1].src = paddr(&data[6]);
- cmd[1].dst = NAND_DEV0_CFG0;
- cmd[1].len = 8;
-
- cmd[2].cmd = 0;
- cmd[2].src = paddr(&data[4]);
- cmd[2].dst = NAND_EXEC_CMD;
- cmd[2].len = 4;
-
- cmd[3].cmd = SRC_CRCI_NAND_DATA | CMD_OCU | CMD_LC;
- cmd[3].src = NAND_FLASH_STATUS;
- cmd[3].dst = paddr(&data[5]);
- cmd[3].len = 4;
-
- ptr[0] = (paddr(cmd) >> 3) | CMD_PTR_LP;
-
- dmov_exec_cmdptr(DMOV_NAND_CHAN, ptr);
-
-#if VERBOSE
- dprintf("status: %x\n", data[5]);
-#endif
-
- /* we fail if there was an operation error, a mpu error, or the
- ** erase success bit was not set.
- */
- if(data[5] & 0x110) return -1;
- if(!(data[5] & 0x80)) return -1;
-
- return 0;
-}
-
-struct data_flash_io {
- unsigned cmd;
- unsigned addr0;
- unsigned addr1;
- unsigned chipsel;
- unsigned cfg0;
- unsigned cfg1;
- unsigned exec;
- unsigned ecc_cfg;
- unsigned ecc_cfg_save;
- struct {
- unsigned flash_status;
- unsigned buffer_status;
- } result[4];
-};
-
-static int _flash_read_page(dmov_s *cmdlist, unsigned *ptrlist, unsigned page, void *_addr, void *_spareaddr)
-{
- dmov_s *cmd = cmdlist;
- unsigned *ptr = ptrlist;
- struct data_flash_io *data = (void*) (ptrlist + 4);
- unsigned addr = (unsigned) _addr;
- unsigned spareaddr = (unsigned) _spareaddr;
- unsigned n;
-
- data->cmd = NAND_CMD_PAGE_READ_ECC;
- data->addr0 = page << 16;
- data->addr1 = (page >> 16) & 0xff;
- data->chipsel = 0 | 4; /* flash0 + undoc bit */
-
- /* GO bit for the EXEC register */
- data->exec = 1;
-
- data->cfg0 = CFG0;
- data->cfg1 = CFG1;
-
- data->ecc_cfg = 0x203;
-
- /* save existing ecc config */
- cmd->cmd = CMD_OCB;
- cmd->src = NAND_EBI2_ECC_BUF_CFG;
- cmd->dst = paddr(&data->ecc_cfg_save);
- cmd->len = 4;
- cmd++;
-
- for(n = 0; n < 4; n++) {
- /* write CMD / ADDR0 / ADDR1 / CHIPSEL regs in a burst */
- cmd->cmd = DST_CRCI_NAND_CMD;
- cmd->src = paddr(&data->cmd);
- cmd->dst = NAND_FLASH_CMD;
- cmd->len = ((n == 0) ? 16 : 4);
- cmd++;
-
- if (n == 0) {
- /* block on cmd ready, set configuration */
- cmd->cmd = 0;
- cmd->src = paddr(&data->cfg0);
- cmd->dst = NAND_DEV0_CFG0;
- cmd->len = 8;
- cmd++;
-
- /* set our ecc config */
- cmd->cmd = 0;
- cmd->src = paddr(&data->ecc_cfg);
- cmd->dst = NAND_EBI2_ECC_BUF_CFG;
- cmd->len = 4;
- cmd++;
- }
- /* kick the execute register */
- cmd->cmd = 0;
- cmd->src = paddr(&data->exec);
- cmd->dst = NAND_EXEC_CMD;
- cmd->len = 4;
- cmd++;
-
- /* block on data ready, then read the status register */
- cmd->cmd = SRC_CRCI_NAND_DATA;
- cmd->src = NAND_FLASH_STATUS;
- cmd->dst = paddr(&data->result[n]);
- cmd->len = 8;
- cmd++;
-
- /* read data block */
- cmd->cmd = 0;
- cmd->src = NAND_FLASH_BUFFER;
- cmd->dst = addr + n * 516;
- cmd->len = ((n < 3) ? 516 : 500);
- cmd++;
- }
-
- /* read extra data */
- cmd->cmd = 0;
- cmd->src = NAND_FLASH_BUFFER + 500;
- cmd->dst = spareaddr;
- cmd->len = 16;
- cmd++;
-
- /* restore saved ecc config */
- cmd->cmd = CMD_OCU | CMD_LC;
- cmd->src = paddr(&data->ecc_cfg_save);
- cmd->dst = NAND_EBI2_ECC_BUF_CFG;
- cmd->len = 4;
-
- ptr[0] = (paddr(cmdlist) >> 3) | CMD_PTR_LP;
-
- dmov_exec_cmdptr(DMOV_NAND_CHAN, ptr);
-
-#if VERBOSE
- dprintf("read page %d: status: %x %x %x %x\n",
- page, data[5], data[6], data[7], data[8]);
- for(n = 0; n < 4; n++) {
- ptr = (unsigned*)(addr + 512 * n);
- dprintf("data%d: %x %x %x %x\n", n, ptr[0], ptr[1], ptr[2], ptr[3]);
- ptr = (unsigned*)(spareaddr + 16 * n);
- dprintf("spare data%d %x %x %x %x\n", n, ptr[0], ptr[1], ptr[2], ptr[3]);
- }
-#endif
-
- /* if any of the writes failed (0x10), or there was a
- ** protection violation (0x100), we lose
- */
- for(n = 0; n < 4; n++) {
- if (data->result[n].flash_status & 0x110) {
- return -1;
- }
- }
-
- return 0;
-}
-
-static int _flash_write_page(dmov_s *cmdlist, unsigned *ptrlist, unsigned page,
- const void *_addr, const void *_spareaddr)
-{
- dmov_s *cmd = cmdlist;
- unsigned *ptr = ptrlist;
- struct data_flash_io *data = (void*) (ptrlist + 4);
- unsigned addr = (unsigned) _addr;
- unsigned spareaddr = (unsigned) _spareaddr;
- unsigned n;
-
- data->cmd = NAND_CMD_PRG_PAGE;
- data->addr0 = page << 16;
- data->addr1 = (page >> 16) & 0xff;
- data->chipsel = 0 | 4; /* flash0 + undoc bit */
-
- data->cfg0 = CFG0;
- data->cfg1 = CFG1;
-
- /* GO bit for the EXEC register */
- data->exec = 1;
-
- data->ecc_cfg = 0x203;
-
- /* save existing ecc config */
- cmd->cmd = CMD_OCB;
- cmd->src = NAND_EBI2_ECC_BUF_CFG;
- cmd->dst = paddr(&data->ecc_cfg_save);
- cmd->len = 4;
- cmd++;
-
- for(n = 0; n < 4; n++) {
- /* write CMD / ADDR0 / ADDR1 / CHIPSEL regs in a burst */
- cmd->cmd = DST_CRCI_NAND_CMD;
- cmd->src = paddr(&data->cmd);
- cmd->dst = NAND_FLASH_CMD;
- cmd->len = ((n == 0) ? 16 : 4);
- cmd++;
-
- if (n == 0) {
- /* set configuration */
- cmd->cmd = 0;
- cmd->src = paddr(&data->cfg0);
- cmd->dst = NAND_DEV0_CFG0;
- cmd->len = 8;
- cmd++;
-
- /* set our ecc config */
- cmd->cmd = 0;
- cmd->src = paddr(&data->ecc_cfg);
- cmd->dst = NAND_EBI2_ECC_BUF_CFG;
- cmd->len = 4;
- cmd++;
- }
-
- /* write data block */
- cmd->cmd = 0;
- cmd->src = addr + n * 516;
- cmd->dst = NAND_FLASH_BUFFER;
- cmd->len = ((n < 3) ? 516 : 510);
- cmd++;
-
- if (n == 3) {
- /* write extra data */
- cmd->cmd = 0;
- cmd->src = spareaddr;
- cmd->dst = NAND_FLASH_BUFFER + 500;
- cmd->len = 16;
- cmd++;
- }
-
- /* kick the execute register */
- cmd->cmd = 0;
- cmd->src = paddr(&data->exec);
- cmd->dst = NAND_EXEC_CMD;
- cmd->len = 4;
- cmd++;
-
- /* block on data ready, then read the status register */
- cmd->cmd = SRC_CRCI_NAND_DATA;
- cmd->src = NAND_FLASH_STATUS;
- cmd->dst = paddr(&data->result[n]);
- cmd->len = 8;
- cmd++;
- }
-
- /* restore saved ecc config */
- cmd->cmd = CMD_OCU | CMD_LC;
- cmd->src = paddr(&data->ecc_cfg_save);
- cmd->dst = NAND_EBI2_ECC_BUF_CFG;
- cmd->len = 4;
-
- ptr[0] = (paddr(cmdlist) >> 3) | CMD_PTR_LP;
-
- dmov_exec_cmdptr(DMOV_NAND_CHAN, ptr);
-
-#if VERBOSE
- dprintf("write page %d: status: %x %x %x %x\n",
- page, data[5], data[6], data[7], data[8]);
-#endif
-
- /* if any of the writes failed (0x10), or there was a
- ** protection violation (0x100), or the program success
- ** bit (0x80) is unset, we lose
- */
- for(n = 0; n < 4; n++) {
- if(data->result[n].flash_status & 0x110) return -1;
- if(!(data->result[n].flash_status & 0x80)) return -1;
- }
-
- return 0;
-}
-
-unsigned nand_cfg0;
-unsigned nand_cfg1;
-
-static int flash_read_config(dmov_s *cmdlist, unsigned *ptrlist)
-{
- cmdlist[0].cmd = CMD_OCB;
- cmdlist[0].src = NAND_DEV0_CFG0;
- cmdlist[0].dst = paddr(&CFG0);
- cmdlist[0].len = 4;
-
- cmdlist[1].cmd = CMD_OCU | CMD_LC;
- cmdlist[1].src = NAND_DEV0_CFG1;
- cmdlist[1].dst = paddr(&CFG1);
- cmdlist[1].len = 4;
-
- *ptrlist = (paddr(cmdlist) >> 3) | CMD_PTR_LP;
-
- dmov_exec_cmdptr(DMOV_NAND_CHAN, ptrlist);
-
- if((CFG0 == 0) || (CFG1 == 0)) {
- return -1;
- }
-
- dprintf("nandcfg: %x %x (initial)\n", CFG0, CFG1);
-
- CFG0 = (3 << 6) /* 4 codeword per page for 2k nand */
- | (516 << 9) /* 516 user data bytes */
- | (10 << 19) /* 10 parity bytes */
- | (5 << 27) /* 5 address cycles */
- | (1 << 30) /* Read status before data */
- | (1 << 31) /* Send read cmd */
- /* 0 spare bytes for 16 bit nand or 1 spare bytes for 8 bit */
- | ((nand_cfg1 & CFG1_WIDE_FLASH) ? (0 << 23) : (1 << 23));
- CFG1 = (0 << 0) /* Enable ecc */
- | (7 << 2) /* 8 recovery cycles */
- | (0 << 5) /* Allow CS deassertion */
- | (465 << 6) /* Bad block marker location */
- | (0 << 16) /* Bad block in user data area */
- | (2 << 17) /* 6 cycle tWB/tRB */
- | (nand_cfg1 & CFG1_WIDE_FLASH); /* preserve wide flash flag */
-
- dprintf("nandcfg: %x %x (used)\n", CFG0, CFG1);
-
- return 0;
-}
-
-static unsigned *flash_ptrlist;
-static dmov_s *flash_cmdlist;
-static void *flash_spare;
-static void *flash_data;
-
-int flash_init(void)
-{
- flash_ptrlist = alloc(1024);
- flash_cmdlist = alloc(1024);
- flash_data = alloc(2048);
- flash_spare = alloc(64);
-
- if(flash_read_config(flash_cmdlist, flash_ptrlist)) {
- dprintf("ERROR: could not read CFG0/CFG1 state\n");
- for(;;);
- }
-
- flash_read_id(flash_cmdlist, flash_ptrlist);
-
- return 0;
-}
-
-int flash_erase(ptentry *ptn)
-{
- unsigned block = ptn->start;
- unsigned count = ptn->length;
-
- while(count-- > 0) {
- if(flash_erase_block(flash_cmdlist, flash_ptrlist, block * 64)) {
- dprintf("cannot erase @ %d (bad block?)\n", block);
- }
- block++;
- }
- return 0;
-}
-
-int flash_read_ext(ptentry *ptn, unsigned extra_per_page, unsigned offset, void *data, unsigned bytes)
-{
- unsigned page = (ptn->start * 64) + (offset / 2048);
- unsigned lastpage = (ptn->start + ptn->length) * 64;
- unsigned count = (bytes + 2047 + extra_per_page) / (2048 + extra_per_page);
- unsigned *spare = (unsigned*) flash_spare;
- unsigned errors = 0;
- unsigned char *image = data;
-
- if(offset & 2047)
- return -1;
-
- while(page < lastpage) {
- if(count == 0) {
- dprintf("flash_read_image: success (%d errors)\n", errors);
- return 0;
- }
-
- if(_flash_read_page(flash_cmdlist, flash_ptrlist, page++, image, spare)) {
- errors++;
- continue;
- }
- image += 2048;
- memcpy(image, spare, extra_per_page);
- image += extra_per_page;
- count -= 1;
- }
-
- /* could not find enough valid pages before we hit the end */
- dprintf("flash_read_image: failed (%d errors)\n", errors);
- return 0xffffffff;
-}
-
-int flash_write(ptentry *ptn, unsigned extra_per_page, const void *data, unsigned bytes)
-{
- unsigned page = ptn->start * 64;
- unsigned lastpage = (ptn->start + ptn->length) * 64;
- unsigned *spare = (unsigned*) flash_spare;
- const unsigned char *image = data;
- unsigned wsize = 2048 + extra_per_page;
- unsigned n;
- int r;
-
- for(n = 0; n < 16; n++) spare[n] = 0xffffffff;
-
- while(bytes > 0) {
- if(bytes < wsize) {
- dprintf("flash_write_image: image undersized (%d < %d)\n", bytes, wsize);
- return -1;
- }
- if(page >= lastpage) {
- dprintf("flash_write_image: out of space\n");
- return -1;
- }
-
- if((page & 63) == 0) {
- if(flash_erase_block(flash_cmdlist, flash_ptrlist, page)) {
- dprintf("flash_write_image: bad block @ %d\n", page >> 6);
- page += 64;
- continue;
- }
- }
-
- if(extra_per_page) {
- r = _flash_write_page(flash_cmdlist, flash_ptrlist, page++, image, image + 2048);
- } else {
- r = _flash_write_page(flash_cmdlist, flash_ptrlist, page++, image, spare);
- }
- if(r) {
- dprintf("flash_write_image: write failure @ page %d (src %d)\n", page, image - (const unsigned char *)data);
- image -= (page & 63) * wsize;
- bytes += (page & 63) * wsize;
- page &= ~63;
- if(flash_erase_block(flash_cmdlist, flash_ptrlist, page)) {
- dprintf("flash_write_image: erase failure @ page %d\n", page);
- }
- dprintf("flash_write_image: restart write @ page %d (src %d)\n", page, image - (const unsigned char *)data);
- page += 64;
- continue;
- }
-
- image += wsize;
- bytes -= wsize;
- }
-
- /* erase any remaining pages in the partition */
- page = (page + 63) & (~63);
- while(page < lastpage){
- if(flash_erase_block(flash_cmdlist, flash_ptrlist, page)) {
- dprintf("flash_write_image: bad block @ %d\n", page >> 6);
- }
- page += 64;
- }
-
- dprintf("flash_write_image: success\n");
- return 0;
-}
-
-static int flash_read_page(unsigned page, void *data, void *extra)
-{
- return _flash_read_page(flash_cmdlist, flash_ptrlist,
- page, data, extra);
-}
-
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