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| author | Daniel Schwierzeck <daniel.schwierzeck@gmail.com> | 2016-02-14 18:52:57 +0100 |
|---|---|---|
| committer | Daniel Schwierzeck <daniel.schwierzeck@gmail.com> | 2016-11-30 16:07:17 +0100 |
| commit | af3971f81ac0fc344461cf86af682ecf1ebe18a8 (patch) | |
| tree | 4640b601c078899eeec23c22f66c043d09f8a2c1 /arch/mips/cpu | |
| parent | 6b29a395b62965eef6b5065d3a526a8588a92038 (diff) | |
| download | u-boot-af3971f81ac0fc344461cf86af682ecf1ebe18a8.tar.gz | |
MIPS: make inclusion of ROM exception vectors configurable
This adds a compile time option to include code for static
exception vectors. Static exception vectors are only needed,
when the U-Boot entry point is equal to the CPU reset exception
vector address. For instance this is the case when U-Boot is
used as ROM in Qemu or booted from parallel NOR flash. When
U-Boot is booted from RAM (e.g. loaded there by SPL), the
exception vectors need to be setup dynamically, which is done
in follow-up commits.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Diffstat (limited to 'arch/mips/cpu')
| -rw-r--r-- | arch/mips/cpu/start.S | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/mips/cpu/start.S b/arch/mips/cpu/start.S index 3f0fc12547..108d2df38a 100644 --- a/arch/mips/cpu/start.S +++ b/arch/mips/cpu/start.S @@ -57,7 +57,6 @@ ENTRY(_start) b reset nop - .org 0x10 #if defined(CONFIG_SYS_XWAY_EBU_BOOTCFG) /* * Almost all Lantiq XWAY SoC devices have an external bus unit (EBU) to @@ -66,16 +65,20 @@ ENTRY(_start) * initial configuration for that EBU in order to access the flash * device with correct parameters. This config option is board-specific. */ + .org 0x10 .word CONFIG_SYS_XWAY_EBU_BOOTCFG .word 0x0 -#elif defined(CONFIG_MALTA) +#endif +#if defined(CONFIG_MALTA) /* * Linux expects the Board ID here. */ + .org 0x10 .word 0x00000420 # 0x420 (Malta Board with CoreLV) .word 0x00000000 #endif +#if defined(CONFIG_ROM_EXCEPTION_VECTORS) .org 0x200 /* TLB refill, 32 bit task */ 1: b 1b @@ -106,7 +109,9 @@ ENTRY(_start) 1: b 1b nop - .align 4 + .org 0x500 +#endif + reset: #if __mips_isa_rev >= 6 mfc0 t0, CP0_CONFIG, 5 |