2 * arch/ppc/boot/simple/misc-mv64x60.c
4 * Relocate bridge's register base and call board specific routine.
6 * Author: Mark A. Greer <source@mvista.com>
8 * 2005 (c) MontaVista Software, Inc. This file is licensed under
9 * the terms of the GNU General Public License version 2. This program
10 * is licensed "as is" without any warranty of any kind, whether express
14 #include <linux/config.h>
15 #include <linux/types.h>
17 #include <asm/mv64x60_defs.h>
19 extern struct bi_record *decompress_kernel(unsigned long load_addr,
20 int num_words, unsigned long cksum);
23 u32 size_reg[MV64x60_CPU2MEM_WINDOWS] = {
24 MV64x60_CPU2MEM_0_SIZE, MV64x60_CPU2MEM_1_SIZE,
25 MV64x60_CPU2MEM_2_SIZE, MV64x60_CPU2MEM_3_SIZE
28 /* Read mem ctlr to get the amount of mem in system */
30 mv64360_get_mem_size(void)
35 enables = in_le32((void __iomem *)CONFIG_MV64X60_NEW_BASE +
36 MV64360_CPU_BAR_ENABLE) & 0xf;
38 for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++)
39 if (!(enables & (1<<i))) {
40 v = in_le32((void __iomem *)CONFIG_MV64X60_NEW_BASE
41 + size_reg[i]) & 0xffff;
50 mv64x60_move_base(void __iomem *old_base, void __iomem *new_base)
54 if (old_base != new_base) {
58 #else /* Must be mv64[34]60 */
62 b = in_le32(old_base + MV64x60_INTERNAL_SPACE_DECODE);
64 b |= ((u32)new_base >> (32 - bits));
65 out_le32(old_base + MV64x60_INTERNAL_SPACE_DECODE, b);
67 __asm__ __volatile__("sync");
69 /* Wait for change to happen (in accordance with the manual) */
70 while (in_le32(new_base + MV64x60_INTERNAL_SPACE_DECODE) != b);
74 void __attribute__ ((weak))
75 mv64x60_board_init(void __iomem *old_base, void __iomem *new_base)
80 load_kernel(unsigned long load_addr, int num_words, unsigned long cksum,
81 void *ign1, void *ign2)
83 mv64x60_move_base((void __iomem *)CONFIG_MV64X60_BASE,
84 (void __iomem *)CONFIG_MV64X60_NEW_BASE);
85 mv64x60_board_init((void __iomem *)CONFIG_MV64X60_BASE,
86 (void __iomem *)CONFIG_MV64X60_NEW_BASE);
87 return decompress_kernel(load_addr, num_words, cksum);