diff options
| -rw-r--r-- | plat/sun50iw1p1/sunxi_def.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/plat/sun50iw1p1/sunxi_def.h b/plat/sun50iw1p1/sunxi_def.h index 024d6d8..e8825c5 100644 --- a/plat/sun50iw1p1/sunxi_def.h +++ b/plat/sun50iw1p1/sunxi_def.h @@ -62,13 +62,15 @@ #define SUNXI_MAX_DRAM_SIZE (2ull<<30) /*2G*/ /* - * This puts ATF into SRAM C. The first 32KB (@0x18000) are used by FEL to - * hold the FEL stack backups, so leave this free and start after that. - * On my board some memory later in SRAM C was unreliable, so having it - * compiled with DEBUG=1 showed weird errors. It should be checked if this - * just a faulty SoC I have, and if, how wide spread this bug is. + * This puts ATF into SRAM A2. The first 16KB (@0x40000) are used by the + * OpenRISC exception vectors and are actually only sparsely implemented + * to match the OpenRISC vector table layout (one word every 256 Bytes). + * According to the manual SRAM A2 should be hardwired to be secure only, + * but this is apparently not true. + * This SRAM is tightly coupled to the OpenRISC controller, so it's not the + * ideal place to put ATF into, but worked better than SRAM C for me. */ -#define SUNXI_TRUSTED_MONITOR_BASE 0x00020000 /* 32KB into SRAM C */ +#define SUNXI_TRUSTED_MONITOR_BASE 0x00044000 /* 16KB into SRAM A2 */ #define SUNXI_TRUSTED_MONITOR_SIZE (64 << 10) /* 64 KByte */ //sec os area |