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am33xx: Correct and expand comments on CONFIG_SPL_MAX_SIZE

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We had been allowing the max size to be larger than actually allowed by
the ROM.  Expand the commentary here to explain why we set these
locations.

Signed-off-by: Tom Rini <trini@ti.com>
This commit is contained in:
Tom Rini 2013-08-20 08:53:43 -04:00
parent 372d7fa1bf
commit c27efde68d
2 changed files with 9 additions and 3 deletions
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2
arch/arm/include/asm/arch-am33xx/omap.h
View File

@ -18,7 +18,7 @@
#ifdef CONFIG_AM33XX
#define NON_SECURE_SRAM_START 0x402F0400
#define NON_SECURE_SRAM_END 0x40310000
#define SRAM_SCRATCH_SPACE_ADDR 0x4030C000
#define SRAM_SCRATCH_SPACE_ADDR 0x4030B800
#elif defined(CONFIG_TI81XX)
#define NON_SECURE_SRAM_START 0x40300000
#define NON_SECURE_SRAM_END 0x40320000

10
include/configs/ti_am335x_common.h
View File

@ -41,9 +41,15 @@
#define CONFIG_BOOTP_SUBNETMASK
#define CONFIG_NET_RETRY_COUNT 10
/* SPL defines. */
/*
* SPL related defines. The Public RAM memory map the ROM defines the
* area between 0x402F0400 and 0x4030B800 as a download area and
* 0x4030B800 to 0x4030CE00 as a public stack area. The ROM also
* supports X-MODEM loading via UART, and we leverage this and then use
* Y-MODEM to load u-boot.img, when booted over UART.
*/
#define CONFIG_SPL_TEXT_BASE 0x402F0400
#define CONFIG_SPL_MAX_SIZE (0x4030C000 - CONFIG_SPL_TEXT_BASE)
#define CONFIG_SPL_MAX_SIZE (0x4030B800 - CONFIG_SPL_TEXT_BASE)
#define CONFIG_SPL_YMODEM_SUPPORT
/*