am43xx_evm: Add qspiboot target

The ePOS EVM and EVM SK have QSPI as an option to boot.  Add a qspiboot
target that utilizes QSPI for env and so forth as an example of best
practices.  As QSPI is booted from directly we need to chang
CONFIG_SYS_TEXT_BASE.

Note that on ePOS EVM the QSPI and NAND are mutually exclusive choices
we need to handle that elsewhere, once NAND support is also added.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>

arch/arm/cpu/armv7/am33xx/board.c

@@ -224,7 +224,7 @@ void s_init(void)
 	set_uart_mux_conf();
 	setup_clocks_for_console();
 	uart_soft_reset();
-#ifdef CONFIG_NOR_BOOT
+#if defined(CONFIG_NOR_BOOT) || defined(CONFIG_QSPI_BOOT)
 	gd->baudrate = CONFIG_BAUDRATE;
 	serial_init();
 	gd->have_console = 1;

board/ti/am43xx/Makefile

@@ -6,7 +6,7 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-ifdef CONFIG_SPL_BUILD
+ifeq ($(CONFIG_SKIP_LOWLEVEL_INIT),)
 obj-y	:= mux.o
 endif
 

board/ti/am43xx/board.c

@@ -70,7 +70,7 @@ static int read_eeprom(struct am43xx_board_id *header)
 	return 0;
 }
 
-#ifdef CONFIG_SPL_BUILD
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
 
 #define NUM_OPPS	6
 

boards.cfg

@@ -279,6 +279,7 @@ Active  arm         armv7          am33xx      ti              am335x
 Active  arm         armv7          am33xx      ti              am335x              am335x_evm_uart5                      am335x_evm:SERIAL6,CONS_INDEX=6,NAND                                                                                              Tom Rini <trini@ti.com>
 Active  arm         armv7          am33xx      ti              am335x              am335x_evm_usbspl                     am335x_evm:SERIAL1,CONS_INDEX=1,NAND,SPL_USBETH_SUPPORT                                                                           Tom Rini <trini@ti.com>
 Active  arm         armv7          am33xx      ti              am43xx              am43xx_evm                            am43xx_evm:SERIAL1,CONS_INDEX=1                                                                                                   Lokesh Vutla <lokeshvutla@ti.com>
+Active  arm         armv7          am33xx      ti              am43xx              am43xx_evm_qspiboot                   am43xx_evm:SERIAL1,CONS_INDEX=1,QSPI,QSPI_BOOT                                                                                    Lokesh Vutla <lokeshvutla@ti.com>
 Active  arm         armv7          am33xx      ti              ti814x              ti814x_evm                            -                                                                                                                                 Matt Porter <matt.porter@linaro.org>
 Active  arm         armv7          am33xx      ti              ti816x              ti816x_evm                            -                                                                                                                                 -
 Active  arm         armv7          at91        atmel           sama5d3_xplained    sama5d3_xplained_mmc                  sama5d3_xplained:SAMA5D3,SYS_USE_MMC                                                                                              Bo Shen <voice.shen@atmel.com>

include/configs/am43xx_evm.h

@@ -48,15 +48,15 @@
  * Since SPL did pll and ddr initialization for us,
  * we don't need to do it twice.
  */
-#if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_NOR_BOOT)
+#if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_QSPI_BOOT)
 #define CONFIG_SKIP_LOWLEVEL_INIT
 #endif
 
 /* Now bring in the rest of the common code. */
 #include <configs/ti_armv7_common.h>
 
-/* Always 128 KiB env size */
-#define CONFIG_ENV_SIZE			(128 << 10)
+/* Always 64 KiB env size */
+#define CONFIG_ENV_SIZE			(64 << 10)
 
 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 
@@ -86,6 +86,30 @@
 #define CONFIG_OMAP_USB_PHY
 #define CONFIG_AM437X_USB2PHY2_HOST
 
+#ifdef CONFIG_QSPI_BOOT
+#define CONFIG_SYS_TEXT_BASE           0x30000000
+#undef CONFIG_ENV_IS_NOWHERE
+#define CONFIG_ENV_IS_IN_SPI_FLASH
+#define CONFIG_SYS_REDUNDAND_ENVIRONMENT
+#define CONFIG_ENV_SPI_MAX_HZ           CONFIG_SF_DEFAULT_SPEED
+#define CONFIG_ENV_SECT_SIZE           (64 << 10) /* 64 KB sectors */
+#define CONFIG_ENV_OFFSET              0x110000
+#define CONFIG_ENV_OFFSET_REDUND       0x120000
+#ifdef MTDIDS_DEFAULT
+#undef MTDIDS_DEFAULT
+#endif
+#ifdef MTDPARTS_DEFAULT
+#undef MTDPARTS_DEFAULT
+#endif
+#define MTDPARTS_DEFAULT		"mtdparts=qspi.0:512k(QSPI.u-boot)," \
+					"512k(QSPI.u-boot.backup)," \
+					"512k(QSPI.u-boot-spl-os)," \
+					"64k(QSPI.u-boot-env)," \
+					"64k(QSPI.u-boot-env.backup)," \
+					"8m(QSPI.kernel)," \
+					"-(QSPI.file-system)"
+#endif
+
 /* SPI */
 #undef CONFIG_OMAP3_SPI
 #define CONFIG_TI_QSPI
@@ -94,6 +118,7 @@
 #define CONFIG_CMD_SF
 #define CONFIG_CMD_SPI
 #define CONFIG_TI_SPI_MMAP
+#define CONFIG_SPI_FLASH_BAR
 #define CONFIG_QSPI_SEL_GPIO                   48
 #define CONFIG_SF_DEFAULT_SPEED                48000000
 #define CONFIG_DEFAULT_SPI_MODE                SPI_MODE_3

include/configs/ti_armv7_common.h

@@ -196,7 +196,8 @@
  * under common/spl/.  Given our generally common memory map, we set a
  * number of related defaults and sizes here.
  */
-#ifndef CONFIG_NOR_BOOT
+#if !defined(CONFIG_NOR_BOOT) && \
+	!(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX))
 #define CONFIG_SPL
 #define CONFIG_SPL_FRAMEWORK
 #define CONFIG_SPL_OS_BOOT