This patch adds support for NAND device connected to GPMC chip-select on following AM43xx EVM boards.
am437x-gp-evm: On this board, NAND Flash signals are muxed with eMMC, thus at a time either eMMC or NAND can be enabled. Selection between eMMC and NAND is controlled by: (a) Statically using Jumper on connecter (J89) present on board. (a) If Jumper on J89 is NOT used, then selection can be dynamically controlled by driving SPI2_CS0[MUX_MODE=GPIO] pin via software: SPI2_CS0 == 0: NAND (default) SPI2_CS0 == 1: eMMC
am43x-epos-evm: On this board, NAND Flash control lines are muxed with QSPI, Thus only one of the two can be used at a time. Selection is controlled by: (a) Dynamically driving following GPIO pin from software GPMC_A0(GPIO) == 0 NAND is selected (default)
NAND device (MT29F4G08AB) on these boards has: - data-width=8bits - blocksize=256KB - pagesize=4KB - oobsize=224 bytes For above NAND device, ROM code expects the boot-loader to be flashed in BCH16 ECC scheme for NAND boot, So by default BCH16 ECC is enabled for AM43xx EVMs.
Signed-off-by: Pekon Gupta pekon@ti.com --- board/ti/am43xx/board.c | 1 + board/ti/am43xx/mux.c | 43 ++++++++++++++++++++++++++++- include/configs/am43xx_evm.h | 64 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 107 insertions(+), 1 deletion(-)
diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c index 7e239f1..d9f401c 100644 --- a/board/ti/am43xx/board.c +++ b/board/ti/am43xx/board.c @@ -612,6 +612,7 @@ int board_init(void) modena_init0_bw_integer, modena_init0_watermark_0;
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; + gpmc_init();
/* Clear all important bits for DSS errata that may need to be tweaked*/ mreqprio_0 = readl(&cdev->mreqprio_0) & MREQPRIO_0_SAB_INIT1_MASK & diff --git a/board/ti/am43xx/mux.c b/board/ti/am43xx/mux.c index 50967e1..a670b0b 100644 --- a/board/ti/am43xx/mux.c +++ b/board/ti/am43xx/mux.c @@ -73,7 +73,38 @@ static struct module_pin_mux gpio5_7_pin_mux[] = { {-1}, };
-static struct module_pin_mux qspi_pin_mux[] = { +#ifdef CONFIG_NAND +static struct module_pin_mux nand_pin_mux[] = { + {OFFSET(gpmc_ad0), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD0 */ + {OFFSET(gpmc_ad1), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD1 */ + {OFFSET(gpmc_ad2), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD2 */ + {OFFSET(gpmc_ad3), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD3 */ + {OFFSET(gpmc_ad4), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD4 */ + {OFFSET(gpmc_ad5), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD5 */ + {OFFSET(gpmc_ad6), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD6 */ + {OFFSET(gpmc_ad7), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD7 */ +#ifdef CONFIG_SYS_NAND_BUSWIDTH_16BIT + {OFFSET(gpmc_ad8), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD8 */ + {OFFSET(gpmc_ad9), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD9 */ + {OFFSET(gpmc_ad10), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD10 */ + {OFFSET(gpmc_ad11), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD11 */ + {OFFSET(gpmc_ad12), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD12 */ + {OFFSET(gpmc_ad13), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD13 */ + {OFFSET(gpmc_ad14), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD14 */ + {OFFSET(gpmc_ad15), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD15 */ +#endif + {OFFSET(gpmc_wait0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* Wait */ + {OFFSET(gpmc_wpn), (MODE(7) | PULLUP_EN)}, /* Write Protect */ + {OFFSET(gpmc_csn0), (MODE(0) | PULLUP_EN)}, /* Chip-Select */ + {OFFSET(gpmc_wen), (MODE(0) | PULLDOWN_EN)}, /* Write Enable */ + {OFFSET(gpmc_oen_ren), (MODE(0) | PULLDOWN_EN)}, /* Read Enable */ + {OFFSET(gpmc_advn_ale), (MODE(0) | PULLDOWN_EN)}, /* Addr Latch Enable*/ + {OFFSET(gpmc_be0n_cle), (MODE(0) | PULLDOWN_EN)}, /* Byte Enable */ + {-1}, +}; +#endif + +static __maybe_unused struct module_pin_mux qspi_pin_mux[] = { {OFFSET(gpmc_csn0), (MODE(3) | PULLUP_EN | RXACTIVE)}, /* QSPI_CS0 */ {OFFSET(gpmc_csn3), (MODE(2) | PULLUP_EN | RXACTIVE)}, /* QSPI_CLK */ {OFFSET(gpmc_advn_ale), (MODE(3) | PULLUP_EN | RXACTIVE)}, /* QSPI_D0 */ @@ -97,12 +128,22 @@ void enable_board_pin_mux(void) if (board_is_gpevm()) { configure_module_pin_mux(gpio5_7_pin_mux); configure_module_pin_mux(rgmii1_pin_mux); +#if defined(CONFIG_NAND) + configure_module_pin_mux(nand_pin_mux); +#endif } else if (board_is_sk()) { configure_module_pin_mux(rgmii1_pin_mux); +#if defined(CONFIG_NAND) + printf("Error: NAND flash not present on this board\n"); +#endif configure_module_pin_mux(qspi_pin_mux); } else if (board_is_eposevm()) { configure_module_pin_mux(rmii1_pin_mux); +#if defined(CONFIG_NAND) + configure_module_pin_mux(nand_pin_mux); +#else configure_module_pin_mux(qspi_pin_mux); +#endif } }
diff --git a/include/configs/am43xx_evm.h b/include/configs/am43xx_evm.h index 974ce98..35eeb3d 100644 --- a/include/configs/am43xx_evm.h +++ b/include/configs/am43xx_evm.h @@ -263,4 +263,68 @@ #define CONFIG_SPL_NET_SUPPORT #define CONFIG_SYS_RX_ETH_BUFFER 64
+/* NAND support */ +#ifdef CONFIG_NAND +/* NAND: device related configs */ +#define CONFIG_SYS_NAND_PAGE_SIZE 4096 +#define CONFIG_SYS_NAND_OOBSIZE 224 +#define CONFIG_SYS_NAND_BLOCK_SIZE (256*1024) +#define CONFIG_SYS_NAND_PAGE_COUNT (CONFIG_SYS_NAND_BLOCK_SIZE / \ + CONFIG_SYS_NAND_PAGE_SIZE) +#define CONFIG_SYS_NAND_5_ADDR_CYCLE +/* NAND: driver related configs */ +#define CONFIG_NAND_OMAP_GPMC +#define CONFIG_NAND_OMAP_ELM +#define CONFIG_SYS_NAND_ONFI_DETECTION +#define CONFIG_NAND_OMAP_ECCSCHEME OMAP_ECC_BCH16_CODE_HW +#define CONFIG_SYS_NAND_BAD_BLOCK_POS NAND_LARGE_BADBLOCK_POS +#define CONFIG_SYS_NAND_ECCPOS { 2, 3, 4, 5, 6, 7, 8, 9, \ + 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, \ + 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, \ + 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, \ + 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, \ + 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, \ + 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, \ + 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, \ + 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, \ + 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, \ + 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, \ + 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, \ + 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, \ + 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, \ + 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, \ + 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, \ + 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, \ + 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, \ + 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, \ + 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, \ + 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, \ + } +#define CONFIG_SYS_NAND_ECCSIZE 512 +#define CONFIG_SYS_NAND_ECCBYTES 26 +#define MTDIDS_DEFAULT "nand0=nand.0" +#define MTDPARTS_DEFAULT "mtdparts=nand.0:" \ + "256k(NAND.SPL)," \ + "256k(NAND.SPL.backup1)," \ + "256k(NAND.SPL.backup2)," \ + "256k(NAND.SPL.backup3)," \ + "512k(NAND.u-boot-spl-os)," \ + "1m(NAND.u-boot)," \ + "256k(NAND.u-boot-env)," \ + "256k(NAND.u-boot-env.backup1)," \ + "7m(NAND.kernel)," \ + "-(NAND.rootfs)" +#define CONFIG_SYS_NAND_U_BOOT_OFFS 0x00180000 +/* NAND: SPL related configs */ +#ifdef CONFIG_SPL_NAND_SUPPORT +#define CONFIG_SPL_NAND_AM33XX_BCH +#endif +/* NAND: SPL falcon mode configs */ +#ifdef CONFIG_SPL_OS_BOOT +#define CONFIG_CMD_SPL_NAND_OFS 0x00100000 /* os parameters */ +#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS 0x00300000 /* kernel offset */ +#define CONFIG_CMD_SPL_WRITE_SIZE CONFIG_SYS_NAND_BLOCK_SIZE +#endif +#endif /* !CONFIG_NAND */ + #endif /* __CONFIG_AM43XX_EVM_H */