dra7xx_evm: Add QSPI_4 support, qspiboot build target

We previously only supported QSPI_1 (single) support.  Add QSPI_4 (quad)
read support as well.  This means we can be given one of two boot device
values, but don't care which it is, so perform a fixup on the QSPI_4
value.  We add a qspiboot build target to better show how you would use
QSPI as a boot device in deployment.  When we boot from QSPI, we can
check the environment for 'boot_os' to control Falcon Mode.

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

arch/arm/cpu/armv7/omap-common/boot-common.c

@@ -56,6 +56,17 @@ void save_omap_boot_params(void)
 					*((u32 *)(dev_data + BOOT_MODE_OFFSET));
 		}
 	}
+
+#ifdef CONFIG_DRA7XX
+	/*
+	 * We get different values for QSPI_1 and QSPI_4 being used, but
+	 * don't actually care about this difference.  Rather than
+	 * mangle the later code, if we're coming in as QSPI_4 just
+	 * change to the QSPI_1 value.
+	 */
+	if (gd->arch.omap_boot_params.omap_bootdevice == 11)
+		gd->arch.omap_boot_params.omap_bootdevice = BOOT_DEVICE_SPI;
+#endif
 }
 
 #ifdef CONFIG_SPL_BUILD

board/ti/dra7xx/evm.c

@@ -16,6 +16,7 @@
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/mmc_host_def.h>
 #include <asm/arch/sata.h>
+#include <environment.h>
 
 #include "mux_data.h"
 
@@ -124,6 +125,24 @@ int board_mmc_init(bd_t *bis)
 }
 #endif
 
+#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_OS_BOOT)
+int spl_start_uboot(void)
+{
+	/* break into full u-boot on 'c' */
+	if (serial_tstc() && serial_getc() == 'c')
+		return 1;
+
+#ifdef CONFIG_SPL_ENV_SUPPORT
+	env_init();
+	env_relocate_spec();
+	if (getenv_yesno("boot_os") != 1)
+		return 1;
+#endif
+
+	return 0;
+}
+#endif
+
 #ifdef CONFIG_DRIVER_TI_CPSW
 
 /* Delay value to add to calibrated value */

boards.cfg

@@ -361,6 +361,7 @@ Active  arm         armv7          omap4       ti              panda
 Active  arm         armv7          omap4       ti              sdp4430             omap4_sdp4430                        -                                                                                                                                 Sricharan R <r.sricharan@ti.com>
 Active  arm         armv7          omap5       ti              dra7xx              dra7xx_evm                           dra7xx_evm:CONS_INDEX=1                                                                                                           Lokesh Vutla <lokeshvutla@ti.com>
 Active  arm         armv7          omap5       ti              dra7xx              dra7xx_evm_uart3                     dra7xx_evm:CONS_INDEX=3,SPL_YMODEM_SUPPORT                                                                                        Lokesh Vutla <lokeshvutla@ti.com>
+Active  arm         armv7          omap5       ti              dra7xx              dra7xx_evm_qspiboot                  dra7xx_evm:CONS_INDEX=1,QSPI_BOOT                                                                                                 Lokesh Vutla <lokeshvutla@ti.com>
 Active  arm         armv7          omap5       ti              omap5_uevm          omap5_uevm                           -                                                                                                                                 -
 Active  arm         armv7          rmobile     atmark-techno   armadillo-800eva    armadillo-800eva                     -                                                                                                                                 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
 Active  arm         armv7          rmobile     kmc             kzm9g               kzm9g                                -                                                                                                                                 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>:Tetsuyuki Kobayashi <koba@kmckk.co.jp>

include/configs/dra7xx_evm.h

@@ -14,6 +14,7 @@
 
 #define CONFIG_DRA7XX
 
+#ifndef CONFIG_QSPI_BOOT
 /* MMC ENV related defines */
 #define CONFIG_ENV_IS_IN_MMC
 #define CONFIG_SYS_MMC_ENV_DEV		1	/* SLOT2: eMMC(1) */
@@ -21,6 +22,7 @@
 #define CONFIG_ENV_OFFSET		0xE0000
 #define CONFIG_ENV_OFFSET_REDUND	(CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)
 #define CONFIG_SYS_REDUNDAND_ENVIRONMENT
+#endif
 #define CONFIG_CMD_SAVEENV
 
 #if (CONFIG_CONS_INDEX == 1)
@@ -76,13 +78,46 @@
 #define CONFIG_SF_DEFAULT_SPEED                48000000
 #define CONFIG_DEFAULT_SPI_MODE                SPI_MODE_3
 
+/*
+ * Default to using SPI for environment, etc.
+ * 0x000000 - 0x010000 : QSPI.SPL (64KiB)
+ * 0x010000 - 0x020000 : QSPI.SPL.backup1 (64KiB)
+ * 0x020000 - 0x030000 : QSPI.SPL.backup2 (64KiB)
+ * 0x030000 - 0x040000 : QSPI.SPL.backup3 (64KiB)
+ * 0x040000 - 0x140000 : QSPI.u-boot (1MiB)
+ * 0x140000 - 0x1C0000 : QSPI.u-boot-spl-os (512KiB)
+ * 0x1C0000 - 0x1D0000 : QSPI.u-boot-env (64KiB)
+ * 0x1D0000 - 0x1E0000 : QSPI.u-boot-env.backup1 (64KiB)
+ * 0x1E0000 - 0x9E0000 : QSPI.kernel (8MiB)
+ * 0x9E0000 - 0x2000000 : USERLAND
+ */
+#define CONFIG_SYS_SPI_KERNEL_OFFS	0x1E0000
+#define CONFIG_SYS_SPI_ARGS_OFFS	0x140000
+#define CONFIG_SYS_SPI_ARGS_SIZE	0x80000
+#if defined(CONFIG_QSPI_BOOT)
+/* In SPL, use the environment and discard MMC support for space. */
+#ifdef CONFIG_SPL_BUILD
+#undef CONFIG_SPL_MMC_SUPPORT
+#undef CONFIG_SPL_MAX_SIZE
+#define CONFIG_SPL_MAX_SIZE             (64 << 10) /* 64 KiB */
+#endif
+#define CONFIG_SPL_ENV_SUPPORT
+#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_SIZE			(64 << 10)
+#define CONFIG_ENV_SECT_SIZE		(64 << 10) /* 64 KB sectors */
+#define CONFIG_ENV_OFFSET		0x1C0000
+#define CONFIG_ENV_OFFSET_REDUND	0x1D0000
+#endif
+
 /* SPI SPL */
 #define CONFIG_SPL_SPI_SUPPORT
 #define CONFIG_SPL_SPI_LOAD
 #define CONFIG_SPL_SPI_FLASH_SUPPORT
 #define CONFIG_SPL_SPI_BUS             0
 #define CONFIG_SPL_SPI_CS              0
-#define CONFIG_SYS_SPI_U_BOOT_OFFS     0x20000
+#define CONFIG_SYS_SPI_U_BOOT_OFFS     0x40000
 
 #define CONFIG_SUPPORT_EMMC_BOOT