[U-Boot] [PATCH v2 3/6] board/ti/am335x: add support for beaglebone NOR Cape
Pekon Gupta
pekon at ti.com
Tue Jul 22 12:33:21 CEST 2014
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 at 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 */
--
1.8.5.1.163.gd7aced9
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