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microblaze: Fix microblaze init vectors 

Microblaze vector table stores several vectors (reset, user exception,
interrupt, debug exception and hardware exception).
All these functions can be below address 0x10000. If they are, wrong
vector table is genarated because jump is not setup from two instructions
(imm upper 16bit and brai lower 16bit).
Adding specific offset prevent problem if address is below 0x10000.
For this case only brai instruction is used.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2011-03-10 10:51:27 +01:00
parent caa66ce905
commit 626afa35c1
1 changed files with 4 additions and 1 deletions
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5
arch/microblaze/kernel/entry.S
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@ -998,10 +998,13 @@ ENTRY(_reset)
/* in current MMU branch you don't care what is here - it is
* used from bootloader site - but this is correct for FS-BOOT */
brai 0x70
nop
.org 0x8
brai TOPHYS(_user_exception); /* syscall handler */
.org 0x10
brai TOPHYS(_interrupt); /* Interrupt handler */
.org 0x18
brai TOPHYS(_debug_exception); /* debug trap handler */
.org 0x20
brai TOPHYS(_hw_exception_handler); /* HW exception handler */
.section .rodata,"a"