leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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).

Browse Source 
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 0f009f781b
commit 3d61018643
5 changed files with 44 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
common/cmd_bootm.c
View File

@ -545,11 +545,15 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
}
#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
/*

38
common/cmd_log.c
View File

@ -59,14 +59,25 @@ static char buf[1024];
static unsigned console_loglevel = 3;
static unsigned default_message_loglevel = 4;
static unsigned log_version = 1;
#ifdef CONFIG_ALT_LB_ADDR
static volatile logbuff_t *log;
#else
static logbuff_t *log;
#endif
static char *lbuf;
void logbuff_init_ptrs (void)
{
unsigned long tag, post_word;
char *s;
#ifdef CONFIG_ALT_LB_ADDR
log = (logbuff_t *)CONFIG_ALT_LH_ADDR;
lbuf = (char *)CONFIG_ALT_LB_ADDR;
#else
log = (logbuff_t *)(gd->bd->bi_memsize-LOGBUFF_LEN) - 1;
lbuf = log->buf;
#endif
/* Set up log version */
if ((s = getenv ("logversion")) != NULL)
@ -101,11 +112,26 @@ void logbuff_init_ptrs (void)
void logbuff_reset (void)
{
#ifndef CONFIG_ALT_LB_ADDR
memset (log, 0, sizeof (logbuff_t));
if (log_version == 2)
#endif
if (log_version == 2) {
log->v2.tag = LOGBUFF_MAGIC;
else
#ifdef CONFIG_ALT_LB_ADDR
log->v2.start = 0;
log->v2.con = 0;
log->v2.end = 0;
log->v2.chars = 0;
#endif
} else {
log->v1.tag = LOGBUFF_MAGIC;
#ifdef CONFIG_ALT_LB_ADDR
log->v1.dummy = 0;
log->v1.start = 0;
log->v1.size = 0;
log->v1.chars = 0;
#endif
}
}
int drv_logbuff_init (void)
@ -188,7 +214,7 @@ int do_log (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
size = log->v1.size;
}
for (i=0; i < (size&LOGBUFF_MASK); i++) {
s = (char *)log->buf+((start+i)&LOGBUFF_MASK);
s = lbuf+((start+i)&LOGBUFF_MASK);
putc (*s);
}
return 0;
@ -196,7 +222,7 @@ int do_log (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
logbuff_reset ();
return 0;
} else if (strcmp(argv[1],"info") == 0) {
printf ("Logbuffer at %08lx\n", (unsigned long)log->buf);
printf ("Logbuffer at %08lx\n", (unsigned long)lbuf);
if (log_version == 2) {
printf ("log_start = %08lx\n", log->v2.start);
printf ("log_end = %08lx\n", log->v2.end);
@ -257,14 +283,14 @@ static int logbuff_printk(const char *line)
line_feed = 0;
for (; p < buf_end; p++) {
if (log_version == 2) {
log->buf[log->v2.end & LOGBUFF_MASK] = *p;
lbuf[log->v2.end & LOGBUFF_MASK] = *p;
log->v2.end++;
if (log->v2.end - log->v2.start > LOGBUFF_LEN)
log->v2.start++;
log->v2.chars++;
}
else {
log->buf[(log->v1.start + log->v1.size) &
lbuf[(log->v1.start + log->v1.size) &
LOGBUFF_MASK] = *p;
if (log->v1.size < LOGBUFF_LEN)
log->v1.size++;

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

4
lib_ppc/board.c
View File

@ -436,10 +436,12 @@ void board_init_f (ulong bootflag)
addr = CFG_SDRAM_BASE + get_effective_memsize();
#ifdef CONFIG_LOGBUFFER
#ifndef CONFIG_ALT_LB_ADDR
/* reserve kernel log buffer */
addr -= (LOGBUFF_RESERVE);
debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
#endif
#endif
#ifdef CONFIG_PRAM
/*
@ -1126,8 +1128,10 @@ void board_init_r (gd_t *id, ulong dest_addr)
pram=0;
#endif
#ifdef CONFIG_LOGBUFFER
#ifndef CONFIG_ALT_LB_ADDR
/* Also take the logbuffer into account (pram is in kB) */
pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
#endif
#endif
sprintf ((char *)memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
setenv ("mem", (char *)memsz);