Add NAND support for Compulab CM-FX6 CoM.
Cc: Igor Grinberg grinberg@compulab.co.il Cc: Stefano Babic sbabic@denx.de Cc: Tom Rini trini@ti.com Acked-by: Igor Grinberg grinberg@compulab.co.il Signed-off-by: Nikita Kiryanov nikita@compulab.co.il --- Changes in V4: - Introduce nand environment variables and nand boot command here - Initialize usdhc3 clock in spl here
Changes in V3: - No changes
Changes in V2: - No changes
board/compulab/cm_fx6/cm_fx6.c | 37 +++++++++++++++++++++++++++++++++++++ board/compulab/cm_fx6/spl.c | 11 +++++++++++ include/configs/cm_fx6.h | 31 ++++++++++++++++++++++++++++++- 3 files changed, 78 insertions(+), 1 deletion(-)
diff --git a/board/compulab/cm_fx6/cm_fx6.c b/board/compulab/cm_fx6/cm_fx6.c index b589581..17c3ee5 100644 --- a/board/compulab/cm_fx6/cm_fx6.c +++ b/board/compulab/cm_fx6/cm_fx6.c @@ -10,11 +10,46 @@
#include <common.h> #include <fsl_esdhc.h> +#include <asm/arch/crm_regs.h> #include <asm/arch/sys_proto.h> +#include <asm/io.h> #include "common.h"
DECLARE_GLOBAL_DATA_PTR;
+#ifdef CONFIG_NAND_MXS +static iomux_v3_cfg_t const nand_pads[] = { + IOMUX_PADS(PAD_NANDF_CLE__NAND_CLE | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_ALE__NAND_ALE | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_CS0__NAND_CE0_B | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_RB0__NAND_READY_B | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_D0__NAND_DATA00 | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_D1__NAND_DATA01 | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_D2__NAND_DATA02 | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_D3__NAND_DATA03 | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_D4__NAND_DATA04 | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_D5__NAND_DATA05 | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_D6__NAND_DATA06 | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_NANDF_D7__NAND_DATA07 | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_SD4_CMD__NAND_RE_B | MUX_PAD_CTRL(NO_PAD_CTRL)), + IOMUX_PADS(PAD_SD4_CLK__NAND_WE_B | MUX_PAD_CTRL(NO_PAD_CTRL)), +}; + +static void cm_fx6_setup_gpmi_nand(void) +{ + SETUP_IOMUX_PADS(nand_pads); + /* Enable clock roots */ + enable_usdhc_clk(1, 3); + enable_usdhc_clk(1, 4); + + setup_gpmi_io_clk(MXC_CCM_CS2CDR_ENFC_CLK_PODF(0xf) | + MXC_CCM_CS2CDR_ENFC_CLK_PRED(1) | + MXC_CCM_CS2CDR_ENFC_CLK_SEL(0)); +} +#else +static void cm_fx6_setup_gpmi_nand(void) {} +#endif + #ifdef CONFIG_FSL_ESDHC static struct fsl_esdhc_cfg usdhc_cfg[3] = { {USDHC1_BASE_ADDR}, @@ -47,6 +82,8 @@ int board_mmc_init(bd_t *bis) int board_init(void) { gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100; + cm_fx6_setup_gpmi_nand(); + return 0; }
diff --git a/board/compulab/cm_fx6/spl.c b/board/compulab/cm_fx6/spl.c index a3abc7b..3948ba2 100644 --- a/board/compulab/cm_fx6/spl.c +++ b/board/compulab/cm_fx6/spl.c @@ -15,6 +15,7 @@ #include <asm/arch/mx6-ddr.h> #include <asm/arch/clock.h> #include <asm/arch/sys_proto.h> +#include <asm/arch/crm_regs.h> #include <asm/imx-common/iomux-v3.h> #include <fsl_esdhc.h> #include "common.h" @@ -309,7 +310,17 @@ static void cm_fx6_setup_ecspi(void) { }
void board_init_f(ulong dummy) { + struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + gd = &gdata; + /* + * We don't use DMA in SPL, but we do need it in U-Boot. U-Boot + * initializes DMA very early (before all board code), so the only + * opportunity we have to initialize APBHDMA clocks is in SPL. + */ + setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK); + enable_usdhc_clk(1, 2); + arch_cpu_init(); timer_init(); cm_fx6_setup_ecspi(); diff --git a/include/configs/cm_fx6.h b/include/configs/cm_fx6.h index 15c55be..4c1bcb9 100644 --- a/include/configs/cm_fx6.h +++ b/include/configs/cm_fx6.h @@ -130,6 +130,20 @@ "mmcboot=echo Booting from mmc ...; " \ "run mmcargs; " \ "run doboot\0" \ + "nandroot=/dev/mtdblock4 rw\0" \ + "nandrootfstype=ubifs\0" \ + "nandargs=setenv bootargs console=${console} " \ + "root=${nandroot} " \ + "rootfstype=${nandrootfstype} " \ + "${video}\0" \ + "nandloadfdt=nand read ${fdtaddr} 780000 80000;\0" \ + "nandboot=echo Booting from nand ...; " \ + "run nandargs; " \ + "nand read ${loadaddr} 0 780000; " \ + "if ${loadfdt}; then " \ + "run nandloadfdt;" \ + "fi; " \ + "run doboot\0" \ "boot=mmc dev ${mmcdev}; " \ "if mmc rescan; then " \ "if run loadmmcbootscript; then " \ @@ -142,7 +156,8 @@ "run mmcboot;" \ "fi;" \ "fi;" \ - "fi;\0" + "fi;" \ + "run nandboot\0"
#define CONFIG_BOOTCOMMAND \ "run setboottypem; run boot" @@ -160,6 +175,20 @@ #define CONFIG_SPI_FLASH_SST #define CONFIG_SPI_FLASH_WINBOND
+/* NAND */ +#ifndef CONFIG_SPL_BUILD +#define CONFIG_CMD_NAND +#define CONFIG_SYS_NAND_BASE 0x40000000 +#define CONFIG_SYS_NAND_MAX_CHIPS 1 +#define CONFIG_SYS_MAX_NAND_DEVICE 1 +#define CONFIG_NAND_MXS +#define CONFIG_SYS_NAND_ONFI_DETECTION +/* APBH DMA is required for NAND support */ +#define CONFIG_APBH_DMA +#define CONFIG_APBH_DMA_BURST +#define CONFIG_APBH_DMA_BURST8 +#endif + /* GPIO */ #define CONFIG_MXC_GPIO