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 removes the need for the weird undocumented register write I 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 <hdego...@redhat.com>
---
include/configs/sunxi-common.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index 2b90681..76f42f5 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -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)
--
2.4.1
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