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The patch introduces the alternative configuration of the log buffer for

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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>
This commit is contained in:
Yuri Tikhonov
2008-02-06 18:48:36 +01:00
committed by Wolfgang Denk
parent ff818b21b0
commit 2d991958b1
5 changed files with 44 additions and 6 deletions
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2
include/configs/lwmon5.h
View File

@@ -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 */
/*-----------------------------------------------------------------------

2
include/ppc440.h
View File

@@ -1434,6 +1434,8 @@
#define GPT0_COMP5 0x00000094
#define GPT0_COMP4 0x00000090
#define GPT0_COMP3 0x0000008C
#define GPT0_COMP2 0x00000088
#define GPT0_COMP1 0x00000084
#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
#define SDR0_USB2D0CR 0x0320