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microblaze: Do not copy reset vectors/manual reset vector setup

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Reset vector can be setup by bootloader and kernel doens't need
to touch it. If you require to setup reset vector, please use
CONFIG_MANUAL_RESET_VECTOR throught menuconfig.
It is not possible to setup address 0x0 as reset address because
make no sense to set it up at all.

Signed-off-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: John Williams <john.williams@petalogix.com>
This commit is contained in:
Michal Simek
2010-11-08 12:37:40 +01:00
parent 7574349cee
commit 0b9b0200b0
3 changed files with 24 additions and 6 deletions
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12
arch/microblaze/kernel/setup.c
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@@ -95,7 +95,8 @@ inline unsigned get_romfs_len(unsigned *addr)
void __init machine_early_init(const char *cmdline, unsigned int ram,
unsigned int fdt, unsigned int msr)
{
unsigned long *src, *dst = (unsigned long *)0x0;
unsigned long *src, *dst;
unsigned int offset = 0;
/* If CONFIG_MTD_UCLINUX is defined, assume ROMFS is at the
* end of kernel. There are two position which we want to check.
@@ -168,7 +169,14 @@ void __init machine_early_init(const char *cmdline, unsigned int ram,
"CPU have it %x\n", msr);
#endif
for (src = __ivt_start; src < __ivt_end; src++, dst++)
/* Do not copy reset vectors. offset = 0x2 means skip the first
* two instructions. dst is pointer to MB vectors which are placed
* in block ram. If you want to copy reset vector setup offset to 0x0 */
#if !CONFIG_MANUAL_RESET_VECTOR
offset = 0x2;
#endif
dst = (unsigned long *) (offset * sizeof(u32));
for (src = __ivt_start + offset; src < __ivt_end; src++, dst++)
*dst = *src;
/* Initialize global data */