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am335x evm: Add am335x_evm_spiboot target

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This target will move the environment into SPI flash and documents
the expected layout.  We correct the SPL define for where U-Boot is
and remove an unused define.

Signed-off-by: Tom Rini <trini@ti.com>
This commit is contained in:
Tom Rini 2013-02-08 11:20:15 +00:00
parent 427ac8cca3
commit 4adfcd68cc
2 changed files with 24 additions and 2 deletions
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1
boards.cfg
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@ -233,6 +233,7 @@ integratorap_cm946es arm arm946es integrator armltd
integratorcp_cm946es arm arm946es integrator armltd - integratorcp:CM946ES
ca9x4_ct_vxp arm armv7 vexpress armltd
am335x_evm arm armv7 am335x ti am33xx am335x_evm:SERIAL1,CONS_INDEX=1
am335x_evm_spiboot arm armv7 am335x ti am33xx am335x_evm:SERIAL1,CONS_INDEX=1,SPI_BOOT
am335x_evm_uart1 arm armv7 am335x ti am33xx am335x_evm:SERIAL2,CONS_INDEX=2
am335x_evm_uart2 arm armv7 am335x ti am33xx am335x_evm:SERIAL3,CONS_INDEX=3
am335x_evm_uart3 arm armv7 am335x ti am33xx am335x_evm:SERIAL4,CONS_INDEX=4

25
include/configs/am335x_evm.h
View file

@ -280,8 +280,7 @@
#define CONFIG_SPL_SPI_LOAD
#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_SIZE 0x40000
#define CONFIG_SYS_SPI_U_BOOT_OFFS 0x80000
#define CONFIG_SPL_MUSB_NEW_SUPPORT
#define CONFIG_SPL_LDSCRIPT "$(CPUDIR)/omap-common/u-boot-spl.lds"
@ -371,6 +370,26 @@
#undef CONFIG_EXTRA_ENV_SETTINGS
#endif
/*
* Default to using SPI for environment, etc. We have multiple copies
* of SPL as the ROM will check these locations.
* 0x0 - 0x20000 : First copy of SPL
* 0x20000 - 0x40000 : Second copy of SPL
* 0x40000 - 0x60000 : Third copy of SPL
* 0x60000 - 0x80000 : Fourth copy of SPL
* 0x80000 - 0xDF000 : U-Boot
* 0xDF000 - 0xE0000 : U-Boot Environment
* 0xE0000 - 0x442000 : Linux Kernel
* 0x442000 - 0x800000 : Userland
*/
#if defined(CONFIG_SPI_BOOT)
# undef CONFIG_ENV_IS_NOWHERE
# define CONFIG_ENV_IS_IN_SPI_FLASH
# define CONFIG_ENV_SPI_MAX_HZ CONFIG_SF_DEFAULT_SPEED
# define CONFIG_ENV_OFFSET (892 << 10) /* 892 KiB in */
# define CONFIG_ENV_SECT_SIZE (4 << 10) /* 4 KB sectors */
#endif /* SPI support */
/* Unsupported features */
#undef CONFIG_USE_IRQ
@ -403,10 +422,12 @@
/* CS0 */
#define CONFIG_SYS_MAX_NAND_DEVICE 1 /* Max number of NAND
devices */
#if !defined(CONFIG_SPI_BOOT)
#undef CONFIG_ENV_IS_NOWHERE
#define CONFIG_ENV_IS_IN_NAND
#define CONFIG_ENV_OFFSET 0x260000 /* environment starts here */
#define CONFIG_SYS_ENV_SECT_SIZE (128 << 10) /* 128 KiB */
#endif
#endif
#endif /* ! __CONFIG_AM335X_EVM_H */