This patch adds support of NOR cape[1] for both Beaglebone (white) and Beaglebone(Black) boards. NOR Flash on this cape is connected to GPMC chip-select[0] and accesses as external memory-mapped device. This cape has 128Mbits(16MBytes), x16, CFI compatible NOR Flash device.
As GPMC chip-select[0] can be shared by multiple capes so NOR profile is not enabled by default in boards.cfg. Following changes are required to enable NOR cape detection when building am335x_boneblack board profile. diff --git a/boards.cfg b/boards.cfg -Active arm armv7 am33xx ti am335x am335x_boneblack am335x_evm:SERIAL1,CO +Active arm armv7 am33xx ti am335x am335x_boneblack am335x_evm:SERIAL1,CO
[1] http://elinux.org/Beagleboardtoys:BeagleBone_128Mb_16-Bit_NOR_Module http://elinux.org/CircuitCo:BeagleBone_Memory_Expansion
Signed-off-by: Pekon Gupta pekon@ti.com --- board/ti/am335x/mux.c | 95 ++++++++++++++++---------------------------- doc/README.cfi | 13 ++++++ include/configs/am335x_evm.h | 2 + 3 files changed, 50 insertions(+), 60 deletions(-)
diff --git a/board/ti/am335x/mux.c b/board/ti/am335x/mux.c index 439da4b..2a18ccb 100644 --- a/board/ti/am335x/mux.c +++ b/board/ti/am335x/mux.c @@ -200,73 +200,46 @@ static struct module_pin_mux nand_pin_mux[] = { {OFFSET(gpmc_be0n_cle), (MODE(0) | PULLDOWN_EN)}, /* BE_CLE */ {-1}, }; -#endif -#if defined(CONFIG_NOR) && !defined(CONFIG_NOR_BOOT) +#elif defined(CONFIG_NOR) static struct module_pin_mux bone_norcape_pin_mux[] = { - {OFFSET(lcd_data0), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A0 */ - {OFFSET(lcd_data1), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A1 */ - {OFFSET(lcd_data2), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A2 */ - {OFFSET(lcd_data3), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A3 */ - {OFFSET(lcd_data4), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A4 */ - {OFFSET(lcd_data5), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A5 */ - {OFFSET(lcd_data6), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A6 */ - {OFFSET(lcd_data7), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A7 */ - {OFFSET(lcd_vsync), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A8 */ - {OFFSET(lcd_hsync), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A9 */ - {OFFSET(lcd_pclk), MODE(1)| PULLUDEN | RXACTIVE}, /* NOR_A10 */ - {OFFSET(lcd_ac_bias_en), MODE(1)| PULLUDEN | RXACTIVE}, /* NOR_A11 */ - {OFFSET(lcd_data8), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A12 */ - {OFFSET(lcd_data9), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A13 */ - {OFFSET(lcd_data10), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A14 */ - {OFFSET(lcd_data11), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A15 */ - {OFFSET(lcd_data12), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A16 */ - {OFFSET(lcd_data13), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A17 */ - {OFFSET(lcd_data14), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A18 */ - {OFFSET(lcd_data15), MODE(1) | PULLUDEN | RXACTIVE}, /* NOR_A19 */ - {OFFSET(gpmc_ad0), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD0 */ - {OFFSET(gpmc_ad1), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD1 */ - {OFFSET(gpmc_ad2), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD2 */ - {OFFSET(gpmc_ad3), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD3 */ - {OFFSET(gpmc_ad4), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD4 */ - {OFFSET(gpmc_ad5), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD5 */ - {OFFSET(gpmc_ad6), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD6 */ - {OFFSET(gpmc_ad7), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD7 */ - {OFFSET(gpmc_ad8), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD8 */ - {OFFSET(gpmc_ad9), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD9 */ - {OFFSET(gpmc_ad10), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD10 */ - {OFFSET(gpmc_ad11), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD11 */ - {OFFSET(gpmc_ad12), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD12 */ - {OFFSET(gpmc_ad13), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD13 */ - {OFFSET(gpmc_ad14), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD14 */ - {OFFSET(gpmc_ad15), MODE(0) | PULLUDEN | RXACTIVE}, /* NOR_AD15 */ - - {OFFSET(gpmc_csn0), (MODE(0) | PULLUDEN) | RXACTIVE}, /* NOR_CE */ - {OFFSET(gpmc_advn_ale), (MODE(0) | PULLUDEN) | RXACTIVE}, /* NOR_ADVN_ALE */ - {OFFSET(gpmc_oen_ren), (MODE(0) | PULLUDEN | RXACTIVE)},/* NOR_OE */ - {OFFSET(gpmc_be0n_cle), (MODE(0) | PULLUDEN | RXACTIVE)},/* NOR_BE0N_CLE */ - {OFFSET(gpmc_wen), (MODE(0) | PULLUDEN | RXACTIVE)}, /* NOR_WEN */ - {OFFSET(gpmc_wait0), (MODE(0) | RXACTIVE | PULLUDEN)}, /* NOR WAIT */ + {OFFSET(gpmc_a0), MODE(0) | PULLUDDIS}, /* NOR_A0 */ + {OFFSET(gpmc_a1), MODE(0) | PULLUDDIS}, /* NOR_A1 */ + {OFFSET(gpmc_a2), MODE(0) | PULLUDDIS}, /* NOR_A2 */ + {OFFSET(gpmc_a3), MODE(0) | PULLUDDIS}, /* NOR_A3 */ + {OFFSET(gpmc_a4), MODE(0) | PULLUDDIS}, /* NOR_A4 */ + {OFFSET(gpmc_a5), MODE(0) | PULLUDDIS}, /* NOR_A5 */ + {OFFSET(gpmc_a6), MODE(0) | PULLUDDIS}, /* NOR_A6 */ + {OFFSET(gpmc_a7), MODE(0) | PULLUDDIS}, /* NOR_A7 */ + {OFFSET(gpmc_ad0), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD0 */ + {OFFSET(gpmc_ad1), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD1 */ + {OFFSET(gpmc_ad2), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD2 */ + {OFFSET(gpmc_ad3), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD3 */ + {OFFSET(gpmc_ad4), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD4 */ + {OFFSET(gpmc_ad5), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD5 */ + {OFFSET(gpmc_ad6), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD6 */ + {OFFSET(gpmc_ad7), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD7 */ + {OFFSET(gpmc_ad8), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD8 */ + {OFFSET(gpmc_ad9), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD9 */ + {OFFSET(gpmc_ad10), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD10 */ + {OFFSET(gpmc_ad11), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD11 */ + {OFFSET(gpmc_ad12), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD12 */ + {OFFSET(gpmc_ad13), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD13 */ + {OFFSET(gpmc_ad14), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD14 */ + {OFFSET(gpmc_ad15), MODE(0) | PULLUDDIS | RXACTIVE}, /* NOR_AD15 */ + {OFFSET(gpmc_csn0), MODE(0) | PULLUDEN | PULLUP_EN}, /* CE */ + {OFFSET(gpmc_advn_ale), MODE(0) | PULLUDEN | PULLDOWN_EN}, /* ALE */ + {OFFSET(gpmc_oen_ren), MODE(0) | PULLUDEN | PULLDOWN_EN},/* OEn_REN */ + {OFFSET(gpmc_be0n_cle), MODE(0) | PULLUDEN | PULLDOWN_EN},/* unused */ + {OFFSET(gpmc_wen), MODE(0) | PULLUDEN | PULLDOWN_EN}, /* WEN */ + {OFFSET(gpmc_wait0), MODE(0) | PULLUDEN | PULLUP_EN | RXACTIVE},/*WAIT*/ {-1}, }; #endif
#if defined(CONFIG_NOR_BOOT) -static struct module_pin_mux norboot_pin_mux[] = { - {OFFSET(lcd_data1), MODE(1) | PULLUDDIS}, - {OFFSET(lcd_data2), MODE(1) | PULLUDDIS}, - {OFFSET(lcd_data3), MODE(1) | PULLUDDIS}, - {OFFSET(lcd_data4), MODE(1) | PULLUDDIS}, - {OFFSET(lcd_data5), MODE(1) | PULLUDDIS}, - {OFFSET(lcd_data6), MODE(1) | PULLUDDIS}, - {OFFSET(lcd_data7), MODE(1) | PULLUDDIS}, - {OFFSET(lcd_data8), MODE(1) | PULLUDDIS}, - {OFFSET(lcd_data9), MODE(1) | PULLUDDIS}, - {-1}, -}; - void enable_norboot_pin_mux(void) { - configure_module_pin_mux(norboot_pin_mux); + configure_module_pin_mux(bone_norcape_pin_mux); } #endif
@@ -349,7 +322,7 @@ void enable_board_pin_mux(struct am335x_baseboard_id *header) configure_module_pin_mux(mmc0_pin_mux); #if defined(CONFIG_NAND) configure_module_pin_mux(nand_pin_mux); -#elif defined(CONFIG_NOR) && !defined(CONFIG_NOR_BOOT) +#elif defined(CONFIG_NOR) configure_module_pin_mux(bone_norcape_pin_mux); #else configure_module_pin_mux(mmc1_pin_mux); @@ -393,6 +366,8 @@ void enable_board_pin_mux(struct am335x_baseboard_id *header) configure_module_pin_mux(mmc0_pin_mux); #if defined(CONFIG_NAND) configure_module_pin_mux(nand_pin_mux); +#elif defined(CONFIG_NOR) + configure_module_pin_mux(bone_norcape_pin_mux); #else configure_module_pin_mux(mmc1_pin_mux); #endif diff --git a/doc/README.cfi b/doc/README.cfi index d087ff0..81e7cf1 100644 --- a/doc/README.cfi +++ b/doc/README.cfi @@ -27,3 +27,16 @@ void flash_cmd_reset(flash_info_t *info)
see also: http://www.mail-archive.com/u-boot@lists.denx.de/msg24368.html + + +Config Option + + CONFIG_SYS_MAX_FLASH_SECT: Number of sectors available on Flash device + + CONFIG_SYS_FLASH_CFI_WIDTH: Data-width of the flash device + + CONFIG_CMD_FLASH: Enables Flash command library + + CONFIG_FLASH_CFI_DRIVER: Enables CFI Flash driver + + CONFIG_FLASH_CFI_MTD: Enables MTD frame work for NOR Flash devices diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h index 790f1f9..2103239 100644 --- a/include/configs/am335x_evm.h +++ b/include/configs/am335x_evm.h @@ -465,8 +465,10 @@ #define CONFIG_SYS_FLASH_CFI_WIDTH FLASH_CFI_16BIT #define CONFIG_SYS_FLASH_SIZE 0x01000000 #define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_FLASH_BASE +#define CONFIG_ENV_IS_NOWHERE /* Reduce SPL size by removing unlikey targets */ #ifdef CONFIG_NOR_BOOT +#undef CONFIG_ENV_IS_NOWHERE #define CONFIG_ENV_IS_IN_FLASH #define CONFIG_ENV_SECT_SIZE (128 << 10) /* 128 KiB */ #define CONFIG_ENV_OFFSET (512 << 10) /* 512 KiB */