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/include/configs/lwmon5.h b/include/configs/lwmon5.h
index e179e4f..ced7ba6 100644
--- a/include/configs/lwmon5.h
+++ b/include/configs/lwmon5.h
@@ -244,6 +244,8 @@
#define CFG_POST_CACHE_ADDR 0x7fff0000 /* free virtual address */
#define CONFIG_LOGBUFFER
+#define CONFIG_ALT_LH_ADDR (CFG_PERIPHERAL_BASE + GPT0_COMP1)
+#define CONFIG_ALT_LB_ADDR (CFG_OCM_BASE)
#define CFG_CONSOLE_IS_IN_ENV /* Otherwise it catches logbuffer as output */
/*-----------------------------------------------------------------------