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>

diff --git a/README b/README
index 39e05d333c672b5183908a4016ad223641ca023a..7b5d01ba6b3a5b6f269aa117e6aae99671d474a7 100644 (file)
--- a/README
+++ b/README
@@ -3326,6 +3326,10 @@ FIT uImage format:
                Support for NAND boot using simple NAND drivers that
                expose the cmd_ctrl() interface.
 
+               CONFIG_SPL_MTD_SUPPORT
+               Support for the MTD subsystem within SPL.  Useful for
+               environment on NAND support within SPL.
+
                CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT
                Set for the SPL on PPC mpc8xxx targets, support for
                drivers/ddr/fsl/libddr.o in SPL binary.

diff --git a/drivers/mtd/nand/am335x_spl_bch.c b/drivers/mtd/nand/am335x_spl_bch.c
index c84851bab58ea193cdeff3cd51f352f76230a5c4..bd89b067d5bfe669bca3d40cadae3de45a4625c2 100644 (file)
--- a/drivers/mtd/nand/am335x_spl_bch.c
+++ b/drivers/mtd/nand/am335x_spl_bch.c
@@ -16,7 +16,7 @@
 #include <linux/mtd/nand_ecc.h>
 
 static int nand_ecc_pos[] = CONFIG_SYS_NAND_ECCPOS;
-static nand_info_t mtd;
+nand_info_t nand_info[1];
 static struct nand_chip nand_chip;
 
 #define ECCSTEPS       (CONFIG_SYS_NAND_PAGE_SIZE / \
@@ -30,12 +30,12 @@ static struct nand_chip nand_chip;
 static int nand_command(int block, int page, uint32_t offs,
        u8 cmd)
 {
-       struct nand_chip *this = mtd.priv;
+       struct nand_chip *this = nand_info[0].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;
 
-       while (!this->dev_ready(&mtd))
+       while (!this->dev_ready(&nand_info[0]))
                ;
 
        /* Emulate NAND_CMD_READOOB */
@@ -45,11 +45,11 @@ static int nand_command(int block, int page, uint32_t offs,
        }
 
        /* Begin command latch cycle */
-       hwctrl(&mtd, cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE);
+       hwctrl(&nand_info[0], cmd, NAND_CTRL_CLE | NAND_CTRL_CHANGE);
 
        if (cmd == NAND_CMD_RESET) {
-               hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
-               while (!this->dev_ready(&mtd))
+               hwctrl(&nand_info[0], NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+               while (!this->dev_ready(&nand_info[0]))
                        ;
                return 0;
        }
@@ -60,35 +60,35 @@ static int nand_command(int block, int page, uint32_t offs,
 
        /* Set ALE and clear CLE to start address cycle */
        /* Column address */
-       hwctrl(&mtd, offs & 0xff,
+       hwctrl(&nand_info[0], offs & 0xff,
                       NAND_CTRL_ALE | NAND_CTRL_CHANGE); /* A[7:0] */
-       hwctrl(&mtd, (offs >> 8) & 0xff, NAND_CTRL_ALE); /* A[11:9] */
+       hwctrl(&nand_info[0], (offs >> 8) & 0xff, NAND_CTRL_ALE); /* A[11:9] */
        /* Row address */
-       hwctrl(&mtd, (page_addr & 0xff), NAND_CTRL_ALE); /* A[19:12] */
-       hwctrl(&mtd, ((page_addr >> 8) & 0xff),
+       hwctrl(&nand_info[0], (page_addr & 0xff), NAND_CTRL_ALE); /* A[19:12] */
+       hwctrl(&nand_info[0], ((page_addr >> 8) & 0xff),
                       NAND_CTRL_ALE); /* A[27:20] */
 #ifdef CONFIG_SYS_NAND_5_ADDR_CYCLE
        /* One more address cycle for devices > 128MiB */
-       hwctrl(&mtd, (page_addr >> 16) & 0x0f,
+       hwctrl(&nand_info[0], (page_addr >> 16) & 0x0f,
                       NAND_CTRL_ALE); /* A[31:28] */
 #endif
-       hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+       hwctrl(&nand_info[0], NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
 
        if (cmd == NAND_CMD_READ0) {
                /* Latch in address */
-               hwctrl(&mtd, NAND_CMD_READSTART,
+               hwctrl(&nand_info[0], NAND_CMD_READSTART,
                           NAND_CTRL_CLE | NAND_CTRL_CHANGE);
-               hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+               hwctrl(&nand_info[0], NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
 
                /*
                 * Wait a while for the data to be ready
                 */
-               while (!this->dev_ready(&mtd))
+               while (!this->dev_ready(&nand_info[0]))
                        ;
        } else if (cmd == NAND_CMD_RNDOUT) {
-               hwctrl(&mtd, NAND_CMD_RNDOUTSTART, NAND_CTRL_CLE |
+               hwctrl(&nand_info[0], NAND_CMD_RNDOUTSTART, NAND_CTRL_CLE |
                                        NAND_CTRL_CHANGE);
-               hwctrl(&mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
+               hwctrl(&nand_info[0], NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE);
        }
 
        return 0;
@@ -96,7 +96,7 @@ static int nand_command(int block, int page, uint32_t offs,
 
 static int nand_is_bad_block(int block)
 {
-       struct nand_chip *this = mtd.priv;
+       struct nand_chip *this = nand_info[0].priv;
 
        nand_command(block, 0, CONFIG_SYS_NAND_BAD_BLOCK_POS,
                NAND_CMD_READOOB);
@@ -117,7 +117,7 @@ static int nand_is_bad_block(int block)
 
 static int nand_read_page(int block, int page, void *dst)
 {
-       struct nand_chip *this = mtd.priv;
+       struct nand_chip *this = nand_info[0].priv;
        u_char ecc_calc[ECCTOTAL];
        u_char ecc_code[ECCTOTAL];
        u_char oob_data[CONFIG_SYS_NAND_OOBSIZE];
@@ -133,15 +133,15 @@ static int nand_read_page(int block, int page, void *dst)
        nand_command(block, page, 0, NAND_CMD_READ0);
 
        for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
-               this->ecc.hwctl(&mtd, NAND_ECC_READ);
+               this->ecc.hwctl(&nand_info[0], NAND_ECC_READ);
                nand_command(block, page, data_pos, NAND_CMD_RNDOUT);
 
-               this->read_buf(&mtd, p, eccsize);
+               this->read_buf(&nand_info[0], p, eccsize);
 
                nand_command(block, page, oob_pos, NAND_CMD_RNDOUT);
 
-               this->read_buf(&mtd, oob, eccbytes);
-               this->ecc.calculate(&mtd, p, &ecc_calc[i]);
+               this->read_buf(&nand_info[0], oob, eccbytes);
+               this->ecc.calculate(&nand_info[0], p, &ecc_calc[i]);
 
                data_pos += eccsize;
                oob_pos += eccbytes;
@@ -160,7 +160,7 @@ static int nand_read_page(int block, int page, void *dst)
                 * from correct_data(). We just hope that all possible errors
                 * are corrected by this routine.
                 */
-               this->ecc.correct(&mtd, p, &ecc_code[i], &ecc_calc[i]);
+               this->ecc.correct(&nand_info[0], p, &ecc_code[i], &ecc_calc[i]);
        }
 
        return 0;
@@ -206,13 +206,13 @@ void nand_init(void)
        /*
         * Init board specific nand support
         */
-       mtd.priv = &nand_chip;
+       nand_info[0].priv = &nand_chip;
        nand_chip.IO_ADDR_R = nand_chip.IO_ADDR_W =
                (void  __iomem *)CONFIG_SYS_NAND_BASE;
        board_nand_init(&nand_chip);
 
        if (nand_chip.select_chip)
-               nand_chip.select_chip(&mtd, 0);
+               nand_chip.select_chip(&nand_info[0], 0);
 
        /* NAND chip may require reset after power-on */
        nand_command(0, 0, 0, NAND_CMD_RESET);
@@ -222,5 +222,5 @@ void nand_init(void)
 void nand_deselect(void)
 {
        if (nand_chip.select_chip)
-               nand_chip.select_chip(&mtd, -1);
+               nand_chip.select_chip(&nand_info[0], -1);
 }

diff --git a/include/configs/ti_armv7_common.h b/include/configs/ti_armv7_common.h
index 69d69a54212655ea772a46bb9f1fd5dbd5c6e6e5..1127b5b6fb172c3f5e34a484aab2139dcc564803 100644 (file)
--- a/include/configs/ti_armv7_common.h
+++ b/include/configs/ti_armv7_common.h
@@ -245,6 +245,7 @@
 #define CONFIG_SPL_NAND_BASE
 #define CONFIG_SPL_NAND_DRIVERS
 #define CONFIG_SPL_NAND_ECC
+#define CONFIG_SPL_MTD_SUPPORT
 #define CONFIG_SYS_NAND_U_BOOT_START   CONFIG_SYS_TEXT_BASE
 #define CONFIG_SYS_NAND_U_BOOT_OFFS    0x80000
 #endif

diff --git a/spl/Makefile b/spl/Makefile
index 6fec2522a8c90f3598237f46b7592a0fef8ab206..a4d973744b3210614f312281a3a45f69a76a55ff 100644 (file)
--- a/spl/Makefile
+++ b/spl/Makefile
@@ -104,6 +104,7 @@ libs-$(CONFIG_SPL_SPI_SUPPORT) += drivers/spi/
 libs-y += fs/
 libs-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/
 libs-$(CONFIG_SPL_POWER_SUPPORT) += drivers/power/ drivers/power/pmic/
+libs-$(CONFIG_SPL_MTD_SUPPORT) += drivers/mtd/
 libs-$(if $(CONFIG_CMD_NAND),$(CONFIG_SPL_NAND_SUPPORT)) += drivers/mtd/nand/
 libs-$(CONFIG_SPL_DRIVERS_MISC_SUPPORT) += drivers/misc/
 libs-$(CONFIG_SPL_ONENAND_SUPPORT) += drivers/mtd/onenand/