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powerpc: Simplify and clean up the xmon terminal I/O

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This factors out the common bits of arch/powerpc/xmon/start_*.c into
a new nonstdio.c, and removes some stuff that was supposed to make
xmon's I/O routines somewhat stdio-like but was never used.

It also makes the parsing of the xmon= command line option common,
so that ppc32 can now use xmon={off,on,early} also.

Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Paul Mackerras
2005-11-08 22:55:08 +11:00
parent 3825ac0ee6
commit fca5dcd483
12 changed files with 238 additions and 731 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
arch/powerpc/kernel/setup-common.c
View File

@ -51,6 +51,7 @@
#include <asm/page.h>
#include <asm/mmu.h>
#include <asm/lmb.h>
#include <asm/xmon.h>
#undef DEBUG
@ -559,3 +560,23 @@ void __init smp_setup_cpu_maps(void)
#endif /* CONFIG_PPC64 */
}
#endif /* CONFIG_SMP */
#ifdef CONFIG_XMON
static int __init early_xmon(char *p)
{
/* ensure xmon is enabled */
if (p) {
if (strncmp(p, "on", 2) == 0)
xmon_init(1);
if (strncmp(p, "off", 3) == 0)
xmon_init(0);
if (strncmp(p, "early", 5) != 0)
return 0;
}
xmon_init(1);
debugger(NULL);
return 0;
}
early_param("xmon", early_xmon);
#endif

11
arch/powerpc/kernel/setup_32.c
View File

@ -303,14 +303,9 @@ void __init setup_arch(char **cmdline_p)
pmac_feature_init(); /* New cool way */
#endif
#ifdef CONFIG_XMON
xmon_map_scc();
if (strstr(cmd_line, "xmon")) {
xmon_init(1);
debugger(NULL);
}
#endif /* CONFIG_XMON */
if ( ppc_md.progress ) ppc_md.progress("setup_arch: enter", 0x3eab);
#ifdef CONFIG_XMON_DEFAULT
xmon_init(1);
#endif
#if defined(CONFIG_KGDB)
if (ppc_md.kgdb_map_scc)

20
arch/powerpc/kernel/setup_64.c
View File

@ -858,26 +858,6 @@ int check_legacy_ioport(unsigned long base_port)
}
EXPORT_SYMBOL(check_legacy_ioport);
#ifdef CONFIG_XMON
static int __init early_xmon(char *p)
{
/* ensure xmon is enabled */
if (p) {
if (strncmp(p, "on", 2) == 0)
xmon_init(1);
if (strncmp(p, "off", 3) == 0)
xmon_init(0);
if (strncmp(p, "early", 5) != 0)
return 0;
}
xmon_init(1);
debugger(NULL);
return 0;
}
early_param("xmon", early_xmon);
#endif
void cpu_die(void)
{
if (ppc_md.cpu_die)