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| author | Wolfgang Denk <wd@denx.de> | 2011-05-15 23:23:36 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2011-05-15 23:23:36 +0200 |
| commit | 535abb96fb665402894b820f934deaca61ce3d3e (patch) | |
| tree | c01c0c54b4983b6fd90bbc0dedbb94058a69957b /nand_spl/nand_boot.c | |
| parent | 77467e25600825d2777acec81fd5c12d9b6f6390 (diff) | |
| parent | a9c847cb38991a557c767fd02a71bd5fbdd25a95 (diff) | |
| download | u-boot-imx-535abb96fb665402894b820f934deaca61ce3d3e.zip u-boot-imx-535abb96fb665402894b820f934deaca61ce3d3e.tar.gz u-boot-imx-535abb96fb665402894b820f934deaca61ce3d3e.tar.bz2 | |
Merge branch 'master' of git://git.denx.de/u-boot-nand-flash
Diffstat (limited to 'nand_spl/nand_boot.c')
| -rw-r--r-- | nand_spl/nand_boot.c | 43 |
1 files changed, 17 insertions, 26 deletions
diff --git a/nand_spl/nand_boot.c b/nand_spl/nand_boot.c index 4a96878..00df2a0 100644 --- a/nand_spl/nand_boot.c +++ b/nand_spl/nand_boot.c @@ -22,9 +22,6 @@ #include <nand.h> #include <asm/io.h> -#define CONFIG_SYS_NAND_READ_DELAY \ - { volatile int dummy; int i; for (i=0; i<10000; i++) dummy = i; } - static int nand_ecc_pos[] = CONFIG_SYS_NAND_ECCPOS; #if (CONFIG_SYS_NAND_PAGE_SIZE <= 512) @@ -61,11 +58,8 @@ static int nand_command(struct mtd_info *mtd, int block, int page, int offs, u8 /* * Wait a while for the data to be ready */ - if (this->dev_ready) - while (!this->dev_ready(mtd)) - ; - else - CONFIG_SYS_NAND_READ_DELAY; + while (!this->dev_ready(mtd)) + ; return 0; } @@ -77,12 +71,11 @@ static int nand_command(struct mtd_info *mtd, int block, int page, int offs, u8 { struct nand_chip *this = mtd->priv; int page_addr = page + block * CONFIG_SYS_NAND_PAGE_COUNT; + void (*hwctrl)(struct mtd_info *mtd, int cmd, + unsigned int ctrl) = this->cmd_ctrl; - if (this->dev_ready) - while (!this->dev_ready(mtd)) - ; - else - CONFIG_SYS_NAND_READ_DELAY; + while (!this->dev_ready(mtd)) + ; /* Emulate NAND_CMD_READOOB */ if (cmd == NAND_CMD_READOOB) { @@ -95,34 +88,31 @@ static int nand_command(struct mtd_info *mtd, int block, int page, int offs, u8 offs >>= 1; /* Begin command latch cycle */ - this->cmd_ctrl(mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE); + hwctrl(mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE); /* Set ALE and clear CLE to start address cycle */ /* Column address */ - this->cmd_ctrl(mtd, offs & 0xff, + hwctrl(mtd, offs & 0xff, NAND_CTRL_ALE | NAND_CTRL_CHANGE); /* A[7:0] */ - this->cmd_ctrl(mtd, (offs >> 8) & 0xff, NAND_CTRL_ALE); /* A[11:9] */ + hwctrl(mtd, (offs >> 8) & 0xff, NAND_CTRL_ALE); /* A[11:9] */ /* Row address */ - this->cmd_ctrl(mtd, (page_addr & 0xff), NAND_CTRL_ALE); /* A[19:12] */ - this->cmd_ctrl(mtd, ((page_addr >> 8) & 0xff), + hwctrl(mtd, (page_addr & 0xff), NAND_CTRL_ALE); /* A[19:12] */ + hwctrl(mtd, ((page_addr >> 8) & 0xff), NAND_CTRL_ALE); /* A[27:20] */ #ifdef CONFIG_SYS_NAND_5_ADDR_CYCLE /* One more address cycle for devices > 128MiB */ - this->cmd_ctrl(mtd, (page_addr >> 16) & 0x0f, + hwctrl(mtd, (page_addr >> 16) & 0x0f, NAND_CTRL_ALE); /* A[31:28] */ #endif /* Latch in address */ - this->cmd_ctrl(mtd, NAND_CMD_READSTART, + hwctrl(mtd, NAND_CMD_READSTART, NAND_CTRL_CLE | NAND_CTRL_CHANGE); - this->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); + hwctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); /* * Wait a while for the data to be ready */ - if (this->dev_ready) - while (!this->dev_ready(mtd)) - ; - else - CONFIG_SYS_NAND_READ_DELAY; + while (!this->dev_ready(mtd)) + ; return 0; } @@ -244,6 +234,7 @@ void nand_boot(void) nand_info.priv = &nand_chip; nand_chip.IO_ADDR_R = nand_chip.IO_ADDR_W = (void __iomem *)CONFIG_SYS_NAND_BASE; nand_chip.dev_ready = NULL; /* preset to NULL */ + nand_chip.options = 0; board_nand_init(&nand_chip); if (nand_chip.select_chip) |