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Diffstat (limited to 'nand_spl/nand_boot_fsl_ifc.c')
-rw-r--r--nand_spl/nand_boot_fsl_ifc.c271
1 files changed, 0 insertions, 271 deletions
diff --git a/nand_spl/nand_boot_fsl_ifc.c b/nand_spl/nand_boot_fsl_ifc.c
deleted file mode 100644
index 44972c5c0..000000000
--- a/nand_spl/nand_boot_fsl_ifc.c
+++ /dev/null
@@ -1,271 +0,0 @@
-/*
- * NAND boot for FSL Integrated Flash Controller, NAND Flash Control Machine
- *
- * Copyright 2011 Freescale Semiconductor, Inc.
- * Author: Dipen Dudhat <dipen.dudhat@freescale.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/fsl_ifc.h>
-#include <linux/mtd/nand.h>
-
-static inline int is_blank(uchar *addr, int page_size)
-{
- int i;
-
- for (i = 0; i < page_size; i++) {
- if (__raw_readb(&addr[i]) != 0xff)
- return 0;
- }
-
- /*
- * For the SPL, don't worry about uncorrectable errors
- * where the main area is all FFs but shouldn't be.
- */
- return 1;
-}
-
-/* returns nonzero if entire page is blank */
-static inline int check_read_ecc(uchar *buf, u32 *eccstat,
- unsigned int bufnum, int page_size)
-{
- u32 reg = eccstat[bufnum / 4];
- int errors = (reg >> ((3 - bufnum % 4) * 8)) & 15;
-
- if (errors == 15) { /* uncorrectable */
- /* Blank pages fail hw ECC checks */
- if (is_blank(buf, page_size))
- return 1;
-
- puts("ecc error\n");
- for (;;)
- ;
- }
-
- return 0;
-}
-
-static inline void nand_wait(uchar *buf, int bufnum, int page_size)
-{
- struct fsl_ifc *ifc = IFC_BASE_ADDR;
- u32 status;
- u32 eccstat[4];
- int bufperpage = page_size / 512;
- int bufnum_end, i;
-
- bufnum *= bufperpage;
- bufnum_end = bufnum + bufperpage - 1;
-
- do {
- status = in_be32(&ifc->ifc_nand.nand_evter_stat);
- } while (!(status & IFC_NAND_EVTER_STAT_OPC));
-
- if (status & IFC_NAND_EVTER_STAT_FTOER) {
- puts("flash time out error\n");
- for (;;)
- ;
- }
-
- for (i = bufnum / 4; i <= bufnum_end / 4; i++)
- eccstat[i] = in_be32(&ifc->ifc_nand.nand_eccstat[i]);
-
- for (i = bufnum; i <= bufnum_end; i++) {
- if (check_read_ecc(buf, eccstat, i, page_size))
- break;
- }
-
- out_be32(&ifc->ifc_nand.nand_evter_stat, status);
-}
-
-static inline int bad_block(uchar *marker, int port_size)
-{
- if (port_size == 8)
- return __raw_readb(marker) != 0xff;
- else
- return __raw_readw((u16 *)marker) != 0xffff;
-}
-
-static void nand_load(unsigned int offs, int uboot_size, uchar *dst)
-{
- struct fsl_ifc *ifc = IFC_BASE_ADDR;
- uchar *buf = (uchar *)CONFIG_SYS_NAND_BASE;
- int page_size;
- int port_size;
- int pages_per_blk;
- int blk_size;
- int bad_marker = 0;
- int bufnum_mask, bufnum;
-
- int csor, cspr;
- int pos = 0;
- int j = 0;
-
- int sram_addr;
- int pg_no;
-
- /* Get NAND Flash configuration */
- csor = CONFIG_SYS_NAND_CSOR;
- cspr = CONFIG_SYS_NAND_CSPR;
-
- if (!(csor & CSOR_NAND_ECC_DEC_EN)) {
- /* soft ECC in SPL is unimplemented */
- puts("WARNING: soft ECC not checked in SPL\n");
- } else {
- u32 hwcsor;
-
- /* make sure board is configured with ECC on boot */
- hwcsor = in_be32(&ifc->csor_cs[0].csor);
- if (!(hwcsor & CSOR_NAND_ECC_DEC_EN))
- puts("WARNING: ECC not checked in SPL, "
- "check board cfg\n");
- }
-
- port_size = (cspr & CSPR_PORT_SIZE_16) ? 16 : 8;
-
- if (csor & CSOR_NAND_PGS_4K) {
- page_size = 4096;
- bufnum_mask = 1;
- } else if (csor & CSOR_NAND_PGS_2K) {
- page_size = 2048;
- bufnum_mask = 3;
- } else {
- page_size = 512;
- bufnum_mask = 15;
-
- if (port_size == 8)
- bad_marker = 5;
- }
-
- pages_per_blk =
- 32 << ((csor & CSOR_NAND_PB_MASK) >> CSOR_NAND_PB_SHIFT);
-
- blk_size = pages_per_blk * page_size;
-
- /* Open Full SRAM mapping for spare are access */
- out_be32(&ifc->ifc_nand.ncfgr, 0x0);
-
- /* Clear Boot events */
- out_be32(&ifc->ifc_nand.nand_evter_stat, 0xffffffff);
-
- /* Program FIR/FCR for Large/Small page */
- if (page_size > 512) {
- out_be32(&ifc->ifc_nand.nand_fir0,
- (IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
- (IFC_FIR_OP_CA0 << IFC_NAND_FIR0_OP1_SHIFT) |
- (IFC_FIR_OP_RA0 << IFC_NAND_FIR0_OP2_SHIFT) |
- (IFC_FIR_OP_CMD1 << IFC_NAND_FIR0_OP3_SHIFT) |
- (IFC_FIR_OP_BTRD << IFC_NAND_FIR0_OP4_SHIFT));
- out_be32(&ifc->ifc_nand.nand_fir1, 0x0);
-
- out_be32(&ifc->ifc_nand.nand_fcr0,
- (NAND_CMD_READ0 << IFC_NAND_FCR0_CMD0_SHIFT) |
- (NAND_CMD_READSTART << IFC_NAND_FCR0_CMD1_SHIFT));
- } else {
- out_be32(&ifc->ifc_nand.nand_fir0,
- (IFC_FIR_OP_CW0 << IFC_NAND_FIR0_OP0_SHIFT) |
- (IFC_FIR_OP_CA0 << IFC_NAND_FIR0_OP1_SHIFT) |
- (IFC_FIR_OP_RA0 << IFC_NAND_FIR0_OP2_SHIFT) |
- (IFC_FIR_OP_BTRD << IFC_NAND_FIR0_OP3_SHIFT));
- out_be32(&ifc->ifc_nand.nand_fir1, 0x0);
-
- out_be32(&ifc->ifc_nand.nand_fcr0,
- NAND_CMD_READ0 << IFC_NAND_FCR0_CMD0_SHIFT);
- }
-
- /* Program FBCR = 0 for full page read */
- out_be32(&ifc->ifc_nand.nand_fbcr, 0);
-
- /* Read and copy u-boot on SDRAM from NAND device, In parallel
- * check for Bad block if found skip it and read continue to
- * next Block
- */
- while (pos < uboot_size) {
- int i = 0;
- do {
- pg_no = offs / page_size;
- bufnum = pg_no & bufnum_mask;
- sram_addr = bufnum * page_size * 2;
-
- out_be32(&ifc->ifc_nand.row0, pg_no);
- out_be32(&ifc->ifc_nand.col0, 0);
- /* start read */
- out_be32(&ifc->ifc_nand.nandseq_strt,
- IFC_NAND_SEQ_STRT_FIR_STRT);
-
- /* wait for read to complete */
- nand_wait(&buf[sram_addr], bufnum, page_size);
-
- /*
- * If either of the first two pages are marked bad,
- * continue to the next block.
- */
- if (i++ < 2 &&
- bad_block(&buf[sram_addr + page_size + bad_marker],
- port_size)) {
- puts("skipping\n");
- offs = (offs + blk_size) & ~(blk_size - 1);
- pos &= ~(blk_size - 1);
- break;
- }
-
- for (j = 0; j < page_size; j++)
- dst[pos + j] = __raw_readb(&buf[sram_addr + j]);
-
- pos += page_size;
- offs += page_size;
- } while ((offs & (blk_size - 1)) && (pos < uboot_size));
- }
-}
-
-/*
- * Main entrypoint for NAND Boot. It's necessary that SDRAM is already
- * configured and available since this code loads the main U-boot image
- * from NAND into SDRAM and starts from there.
- */
-void nand_boot(void)
-{
- __attribute__((noreturn)) void (*uboot)(void);
-
- /*
- * Load U-Boot image from NAND into RAM
- */
- nand_load(CONFIG_SYS_NAND_U_BOOT_OFFS, CONFIG_SYS_NAND_U_BOOT_SIZE,
- (uchar *)CONFIG_SYS_NAND_U_BOOT_DST);
-
-#ifdef CONFIG_NAND_ENV_DST
- nand_load(CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE,
- (uchar *)CONFIG_NAND_ENV_DST);
-
-#ifdef CONFIG_ENV_OFFSET_REDUND
- nand_load(CONFIG_ENV_OFFSET_REDUND, CONFIG_ENV_SIZE,
- (uchar *)CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE);
-#endif
-#endif
-
- /*
- * Jump to U-Boot image
- */
- /*
- * Clean d-cache and invalidate i-cache, to
- * make sure that no stale data is executed.
- */
- flush_cache(CONFIG_SYS_NAND_U_BOOT_DST, CONFIG_SYS_NAND_U_BOOT_SIZE);
- uboot = (void *)CONFIG_SYS_NAND_U_BOOT_START;
- uboot();
-}
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