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sunxi: Update sunxi-common.h to deal with different A1-SRAM base addr on sun9i

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The A1 SRAM Base differs between sun9i and the others, update sunxi-common.h
to deal with this, so that we do not set the initial stack pointer to point
to the BROM.

This avoids the need for the weird undocumented register write I previously
took from the allwiner u-boot sources and which needed #ifdef-ery in start.S
as it needed to be done really early on.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Hans de Goede 2015-05-20 15:27:16 +02:00
parent e049fe2826
commit 77fe98870b
1 changed files with 12 additions and 0 deletions
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12
include/configs/sunxi-common.h
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@ -97,8 +97,20 @@
#define CONFIG_SPL_BSS_MAX_SIZE 0x00080000 /* 512 KiB */
#define CONFIG_SYS_SPL_MALLOC_SIZE 0x00080000 /* 512 KiB */
#ifdef CONFIG_MACH_SUN9I
/*
* The A80's A1 sram starts at 0x00010000 rather then at 0x00000000 and is
* slightly bigger. Note that it is possible to map the first 32 KiB of the
* A1 at 0x00000000 like with older SoCs by writing 0x16aa0001 to the
* undocumented 0x008000e0 SYS_CTRL register. Where the 16aa is a key and
* the 1 actually activates the mapping of the first 32 KiB to 0x00000000.
*/
#define CONFIG_SYS_INIT_RAM_ADDR 0x10000
#define CONFIG_SYS_INIT_RAM_SIZE 0x0a000 /* 40 KiB */
#else
#define CONFIG_SYS_INIT_RAM_ADDR 0x0
#define CONFIG_SYS_INIT_RAM_SIZE 0x8000 /* 32 KiB */
#endif
#define CONFIG_SYS_INIT_SP_OFFSET \
(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)