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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2005-11-23 17:57:25 +1100
committerPaul Mackerras <paulus@samba.org>2006-01-09 14:49:54 +1100
commit51d3082fe6e55aecfa17113dbe98077c749f724c (patch)
tree9a1e2355d5988d8cc1ca511d53c1bb24b0baa17f /arch/powerpc/platforms/powermac/setup.c
parent463ce0e103f419f51b1769111e73fe8bb305d0ec (diff)
downloadlinux-51d3082fe6e55aecfa17113dbe98077c749f724c.tar.gz
[PATCH] powerpc: Unify udbg (#2)
This patch unifies udbg for both ppc32 and ppc64 when building the merged achitecture. xmon now has a single "back end". The powermac udbg stuff gets enriched with some ADB capabilities and btext output. In addition, the early_init callback is now called on ppc32 as well, approx. in the same order as ppc64 regarding device-tree manipulations. The init sequences of ppc32 and ppc64 are getting closer, I'll unify them in a later patch. For now, you can force udbg to the scc using "sccdbg" or to btext using "btextdbg" on powermacs. I'll implement a cleaner way of forcing udbg output to something else than the autodetected OF output device in a later patch. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/powermac/setup.c')
-rw-r--r--arch/powerpc/platforms/powermac/setup.c52
1 files changed, 23 insertions, 29 deletions
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 3b7a492d9b68..6ee620fe5195 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -77,6 +77,7 @@
#include <asm/pmc.h>
#include <asm/mpic.h>
#include <asm/lmb.h>
+#include <asm/udbg.h>
#include "pmac.h"
@@ -322,16 +323,6 @@ void __init pmac_setup_arch(void)
l2cr_init();
#endif /* CONFIG_PPC32 */
-#ifdef CONFIG_PPC64
- /* Probe motherboard chipset */
- /* this is done earlier in setup_arch for 32-bit */
- pmac_feature_init();
-
- /* We can NAP */
- powersave_nap = 1;
- printk(KERN_INFO "Using native/NAP idle loop\n");
-#endif
-
#ifdef CONFIG_KGDB
zs_kgdb_hook(0);
#endif
@@ -622,13 +613,26 @@ static void __init pmac_init_early(void)
* and call ioremap
*/
hpte_init_native();
+#endif
- /* Init SCC */
- if (strstr(cmd_line, "sccdbg")) {
- sccdbg = 1;
- udbg_init_scc(NULL);
+ /* Enable early btext debug if requested */
+ if (strstr(cmd_line, "btextdbg")) {
+ udbg_adb_init_early();
+ register_early_udbg_console();
}
+ /* Probe motherboard chipset */
+ pmac_feature_init();
+
+ /* We can NAP */
+ powersave_nap = 1;
+ printk(KERN_INFO "Using native/NAP idle loop\n");
+
+ /* Initialize debug stuff */
+ udbg_scc_init(!!strstr(cmd_line, "sccdbg"));
+ udbg_adb_init(!!strstr(cmd_line, "btextdbg"));
+
+#ifdef CONFIG_PPC64
/* Setup interrupt mapping options */
ppc64_interrupt_controller = IC_OPEN_PIC;
@@ -638,19 +642,8 @@ static void __init pmac_init_early(void)
static void __init pmac_progress(char *s, unsigned short hex)
{
-#ifdef CONFIG_PPC64
- if (sccdbg) {
- udbg_puts(s);
- udbg_puts("\n");
- return;
- }
-#endif
-#ifdef CONFIG_BOOTX_TEXT
- if (boot_text_mapped) {
- btext_drawstring(s);
- btext_drawchar('\n');
- }
-#endif /* CONFIG_BOOTX_TEXT */
+ udbg_puts(s);
+ udbg_puts("\n");
}
/*
@@ -735,7 +728,8 @@ static int __init pmac_probe(int platform)
}
#ifdef CONFIG_PPC64
-static int pmac_probe_mode(struct pci_bus *bus)
+/* Move that to pci.c */
+static int pmac_pci_probe_mode(struct pci_bus *bus)
{
struct device_node *node = bus->sysdata;
@@ -771,7 +765,7 @@ struct machdep_calls __initdata pmac_md = {
.check_legacy_ioport = pmac_check_legacy_ioport,
.progress = pmac_progress,
#ifdef CONFIG_PPC64
- .pci_probe_mode = pmac_probe_mode,
+ .pci_probe_mode = pmac_pci_probe_mode,
.idle_loop = native_idle,
.enable_pmcs = power4_enable_pmcs,
#ifdef CONFIG_KEXEC