The patch introduces the alternative configuration of the log buffer for the lwmon5 board: the storage for the log-buffer itself is OCM(on-chip memory), the log-buffer header is moved to six GPT registers (PPC440EPX_GPT0_COMP1, ..., PPC440EPX_GPT0_COMP5).
To enable this, alternative, configuration the U-Boot board configuration
file for lwmon5 includes the definitions of alternative addresses for header
(CONFIG_ALT_LH_ADDR) and buffer (CONFIG_ALT_LB_ADDR).
The Linux shall be configured with the CONFIG_ALT_LB_LOCATION option set,
and has the BOARD_ALT_LH_ADDR and BOARD_ALT_LB_ADDR constants defined in the
lwmon5 board-specific header (arch/ppc/platforms/4xx/lwmon5.h).
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 9546729..9deb781 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -545,11 +545,15 @@
}
#ifdef CONFIG_LOGBUFFER
+#ifndef CONFIG_ALT_LB_ADDR
kbd=gd->bd;
/* Prevent initrd from overwriting logbuffer */
if (initrd_high < (kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD))
initrd_high = kbd->bi_memsize-LOGBUFF_LEN-LOGBUFF_OVERHEAD;
debug ("## Logbuffer at 0x%08lX ", kbd->bi_memsize-LOGBUFF_LEN);
+#else
+ debug ("## Logbuffer at 0x%08lX ", CONFIG_ALT_LB_ADDR);
+#endif
#endif
/*