diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ppc/boot/simple/misc-mv64x60.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/ppc/boot/simple/misc-mv64x60.c')
-rw-r--r-- | arch/ppc/boot/simple/misc-mv64x60.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/ppc/boot/simple/misc-mv64x60.c b/arch/ppc/boot/simple/misc-mv64x60.c new file mode 100644 index 000000000000..7e88fc6d207d --- /dev/null +++ b/arch/ppc/boot/simple/misc-mv64x60.c @@ -0,0 +1,61 @@ +/* + * arch/ppc/boot/simple/misc-mv64x60.c + * + * Relocate bridge's register base and call board specific routine. + * + * Author: Mark A. Greer <source@mvista.com> + * + * 2005 (c) MontaVista Software, Inc. This file is licensed under + * the terms of the GNU General Public License version 2. This program + * is licensed "as is" without any warranty of any kind, whether express + * or implied. + */ + +#include <linux/config.h> +#include <linux/types.h> +#include <asm/io.h> +#include <asm/mv64x60_defs.h> + +extern struct bi_record *decompress_kernel(unsigned long load_addr, + int num_words, unsigned long cksum); + +void +mv64x60_move_base(void __iomem *old_base, void __iomem *new_base) +{ + u32 bits, mask, b; + + if (old_base != new_base) { +#ifdef CONFIG_GT64260 + bits = 12; + mask = 0x07000000; +#else /* Must be mv64[34]60 */ + bits = 16; + mask = 0x03000000; +#endif + b = in_le32(old_base + MV64x60_INTERNAL_SPACE_DECODE); + b &= mask; + b |= ((u32)new_base >> (32 - bits)); + out_le32(old_base + MV64x60_INTERNAL_SPACE_DECODE, b); + + __asm__ __volatile__("sync"); + + /* Wait for change to happen (in accordance with the manual) */ + while (in_le32(new_base + MV64x60_INTERNAL_SPACE_DECODE) != b); + } +} + +void __attribute__ ((weak)) +mv64x60_board_init(void __iomem *old_base, void __iomem *new_base) +{ +} + +void * +load_kernel(unsigned long load_addr, int num_words, unsigned long cksum, + void *ign1, void *ign2) +{ + mv64x60_move_base((void __iomem *)CONFIG_MV64X60_BASE, + (void __iomem *)CONFIG_MV64X60_NEW_BASE); + mv64x60_board_init((void __iomem *)CONFIG_MV64X60_BASE, + (void __iomem *)CONFIG_MV64X60_NEW_BASE); + return decompress_kernel(load_addr, num_words, cksum); +} |