mtd: Add a CONFIG_SPL_MTD_SUPPORT for a more full NAND subsystem in SPL
This mainly converts the am335x_spl_bch driver to the "normal" format which means a slight change to nand_info within the driver. Acked-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Tom Rini <trini@ti.com>utp
Tom Rini
parent
39b924a304
commit
6dd3b56689
4
README
4
README
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@ -3326,6 +3326,10 @@ FIT uImage format:
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Support for NAND boot using simple NAND drivers that
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expose the cmd_ctrl() interface.
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CONFIG_SPL_MTD_SUPPORT
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Support for the MTD subsystem within SPL. Useful for
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environment on NAND support within SPL.
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CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT
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Set for the SPL on PPC mpc8xxx targets, support for
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drivers/ddr/fsl/libddr.o in SPL binary.
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@ -16,7 +16,7 @@
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#include <linux/mtd/nand_ecc.h>
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static int nand_ecc_pos[] = CONFIG_SYS_NAND_ECCPOS;
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static nand_info_t mtd;
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nand_info_t nand_info[1];
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static struct nand_chip nand_chip;
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#define ECCSTEPS (CONFIG_SYS_NAND_PAGE_SIZE / \
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@ -30,12 +30,12 @@ static struct nand_chip nand_chip;
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static int nand_command(int block, int page, uint32_t offs,
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u8 cmd)
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{
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struct nand_chip *this = mtd.priv;
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struct nand_chip *this = nand_info[0].priv;
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int page_addr = page + block * CONFIG_SYS_NAND_PAGE_COUNT;
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void (*hwctrl)(struct mtd_info *mtd, int cmd,
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unsigned int ctrl) = this->cmd_ctrl;
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while (!this->dev_ready(&mtd))
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while (!this->dev_ready(&nand_info[0]))
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;
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/* Emulate NAND_CMD_READOOB */
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@ -45,11 +45,11 @@ static int nand_command(int block, int page, uint32_t offs,
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}
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/* Begin command latch cycle */
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hwctrl(&mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE);
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hwctrl(&nand_info[0], cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE);
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if (cmd == NAND_CMD_RESET) {
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hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
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while (!this->dev_ready(&mtd))
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hwctrl(&nand_info[0], NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
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while (!this->dev_ready(&nand_info[0]))
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;
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return 0;
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}
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@ -60,35 +60,35 @@ static int nand_command(int block, int page, uint32_t offs,
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/* Set ALE and clear CLE to start address cycle */
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/* Column address */
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hwctrl(&mtd, offs & 0xff,
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hwctrl(&nand_info[0], offs & 0xff,
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NAND_CTRL_ALE | NAND_CTRL_CHANGE); /* A[7:0] */
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hwctrl(&mtd, (offs >> 8) & 0xff, NAND_CTRL_ALE); /* A[11:9] */
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hwctrl(&nand_info[0], (offs >> 8) & 0xff, NAND_CTRL_ALE); /* A[11:9] */
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/* Row address */
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hwctrl(&mtd, (page_addr & 0xff), NAND_CTRL_ALE); /* A[19:12] */
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hwctrl(&mtd, ((page_addr >> 8) & 0xff),
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hwctrl(&nand_info[0], (page_addr & 0xff), NAND_CTRL_ALE); /* A[19:12] */
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hwctrl(&nand_info[0], ((page_addr >> 8) & 0xff),
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NAND_CTRL_ALE); /* A[27:20] */
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#ifdef CONFIG_SYS_NAND_5_ADDR_CYCLE
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/* One more address cycle for devices > 128MiB */
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hwctrl(&mtd, (page_addr >> 16) & 0x0f,
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hwctrl(&nand_info[0], (page_addr >> 16) & 0x0f,
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NAND_CTRL_ALE); /* A[31:28] */
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#endif
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hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
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hwctrl(&nand_info[0], NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
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if (cmd == NAND_CMD_READ0) {
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/* Latch in address */
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hwctrl(&mtd, NAND_CMD_READSTART,
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hwctrl(&nand_info[0], NAND_CMD_READSTART,
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NAND_CTRL_CLE | NAND_CTRL_CHANGE);
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hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
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hwctrl(&nand_info[0], NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
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/*
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* Wait a while for the data to be ready
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*/
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while (!this->dev_ready(&mtd))
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while (!this->dev_ready(&nand_info[0]))
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;
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} else if (cmd == NAND_CMD_RNDOUT) {
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hwctrl(&mtd, NAND_CMD_RNDOUTSTART, NAND_CTRL_CLE |
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hwctrl(&nand_info[0], NAND_CMD_RNDOUTSTART, NAND_CTRL_CLE |
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NAND_CTRL_CHANGE);
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hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
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hwctrl(&nand_info[0], NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
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}
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return 0;
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@ -96,7 +96,7 @@ static int nand_command(int block, int page, uint32_t offs,
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static int nand_is_bad_block(int block)
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{
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struct nand_chip *this = mtd.priv;
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struct nand_chip *this = nand_info[0].priv;
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nand_command(block, 0, CONFIG_SYS_NAND_BAD_BLOCK_POS,
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NAND_CMD_READOOB);
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@ -117,7 +117,7 @@ static int nand_is_bad_block(int block)
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static int nand_read_page(int block, int page, void *dst)
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{
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struct nand_chip *this = mtd.priv;
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struct nand_chip *this = nand_info[0].priv;
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u_char ecc_calc[ECCTOTAL];
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u_char ecc_code[ECCTOTAL];
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u_char oob_data[CONFIG_SYS_NAND_OOBSIZE];
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@ -133,15 +133,15 @@ static int nand_read_page(int block, int page, void *dst)
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nand_command(block, page, 0, NAND_CMD_READ0);
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for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
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this->ecc.hwctl(&mtd, NAND_ECC_READ);
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this->ecc.hwctl(&nand_info[0], NAND_ECC_READ);
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nand_command(block, page, data_pos, NAND_CMD_RNDOUT);
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this->read_buf(&mtd, p, eccsize);
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this->read_buf(&nand_info[0], p, eccsize);
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nand_command(block, page, oob_pos, NAND_CMD_RNDOUT);
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this->read_buf(&mtd, oob, eccbytes);
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this->ecc.calculate(&mtd, p, &ecc_calc[i]);
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this->read_buf(&nand_info[0], oob, eccbytes);
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this->ecc.calculate(&nand_info[0], p, &ecc_calc[i]);
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data_pos += eccsize;
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oob_pos += eccbytes;
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@ -160,7 +160,7 @@ static int nand_read_page(int block, int page, void *dst)
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* from correct_data(). We just hope that all possible errors
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* are corrected by this routine.
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*/
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this->ecc.correct(&mtd, p, &ecc_code[i], &ecc_calc[i]);
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this->ecc.correct(&nand_info[0], p, &ecc_code[i], &ecc_calc[i]);
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}
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return 0;
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@ -206,13 +206,13 @@ void nand_init(void)
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/*
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* Init board specific nand support
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*/
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mtd.priv = &nand_chip;
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nand_info[0].priv = &nand_chip;
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nand_chip.IO_ADDR_R = nand_chip.IO_ADDR_W =
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(void __iomem *)CONFIG_SYS_NAND_BASE;
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board_nand_init(&nand_chip);
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if (nand_chip.select_chip)
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nand_chip.select_chip(&mtd, 0);
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nand_chip.select_chip(&nand_info[0], 0);
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/* NAND chip may require reset after power-on */
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nand_command(0, 0, 0, NAND_CMD_RESET);
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@ -222,5 +222,5 @@ void nand_init(void)
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void nand_deselect(void)
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{
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if (nand_chip.select_chip)
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nand_chip.select_chip(&mtd, -1);
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nand_chip.select_chip(&nand_info[0], -1);
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}
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@ -245,6 +245,7 @@
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#define CONFIG_SPL_NAND_BASE
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#define CONFIG_SPL_NAND_DRIVERS
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#define CONFIG_SPL_NAND_ECC
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#define CONFIG_SPL_MTD_SUPPORT
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#define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE
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#define CONFIG_SYS_NAND_U_BOOT_OFFS 0x80000
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#endif
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@ -104,6 +104,7 @@ libs-$(CONFIG_SPL_SPI_SUPPORT) += drivers/spi/
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libs-y += fs/
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libs-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/
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libs-$(CONFIG_SPL_POWER_SUPPORT) += drivers/power/ drivers/power/pmic/
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libs-$(CONFIG_SPL_MTD_SUPPORT) += drivers/mtd/
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libs-$(if $(CONFIG_CMD_NAND),$(CONFIG_SPL_NAND_SUPPORT)) += drivers/mtd/nand/
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libs-$(CONFIG_SPL_DRIVERS_MISC_SUPPORT) += drivers/misc/
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libs-$(CONFIG_SPL_ONENAND_SUPPORT) += drivers/mtd/onenand/
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