aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/prom.c36
-rw-r--r--arch/powerpc/kernel/prom_init.c87
-rw-r--r--arch/powerpc/platforms/powermac/setup.c10
3 files changed, 106 insertions, 27 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index c8d288457b4..69f69c38fd2 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -309,6 +309,37 @@ static int __devinit finish_node_interrupts(struct device_node *np,
unsigned int *irq, virq;
struct device_node *ic;
+ if (num_interrupt_controllers == 0) {
+ /*
+ * Old machines just have a list of interrupt numbers
+ * and no interrupt-controller nodes.
+ */
+ ints = (unsigned int *) get_property(np, "AAPL,interrupts",
+ &intlen);
+ /* XXX old interpret_pci_props looked in parent too */
+ /* XXX old interpret_macio_props looked for interrupts
+ before AAPL,interrupts */
+ if (ints == NULL)
+ ints = (unsigned int *) get_property(np, "interrupts",
+ &intlen);
+ if (ints == NULL)
+ return 0;
+
+ np->n_intrs = intlen / sizeof(unsigned int);
+ np->intrs = prom_alloc(np->n_intrs * sizeof(np->intrs[0]),
+ mem_start);
+ if (!np->intrs)
+ return -ENOMEM;
+ if (measure_only)
+ return 0;
+
+ for (i = 0; i < np->n_intrs; ++i) {
+ np->intrs[i].line = *ints++;
+ np->intrs[i].sense = 1;
+ }
+ return 0;
+ }
+
ints = (unsigned int *) get_property(np, "interrupts", &intlen);
if (ints == NULL)
return 0;
@@ -1024,6 +1055,8 @@ void __init unflatten_device_tree(void)
/* Get pointer to OF "/chosen" node for use everywhere */
of_chosen = of_find_node_by_path("/chosen");
+ if (of_chosen == NULL)
+ of_chosen = of_find_node_by_path("/chosen@0");
/* Retreive command line */
if (of_chosen != NULL) {
@@ -1123,7 +1156,8 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
DBG("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
- if (depth != 1 || strcmp(uname, "chosen") != 0)
+ if (depth != 1 ||
+ (strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0))
return 0;
/* get platform type */
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 095659d51b4..18d266d8935 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -132,6 +132,7 @@ struct prom_t {
ihandle chosen;
int cpu;
ihandle stdout;
+ ihandle mmumap;
};
struct mem_map_entry {
@@ -274,14 +275,6 @@ static int __init call_prom_ret(const char *service, int nargs, int nret,
}
-static unsigned int __init prom_claim(unsigned long virt, unsigned long size,
- unsigned long align)
-{
- return (unsigned int)call_prom("claim", 3, 1,
- (prom_arg_t)virt, (prom_arg_t)size,
- (prom_arg_t)align);
-}
-
static void __init prom_print(const char *msg)
{
const char *p, *q;
@@ -363,6 +356,21 @@ static void __init prom_printf(const char *format, ...)
}
+static unsigned int __init prom_claim(unsigned long virt, unsigned long size,
+ unsigned long align)
+{
+ int ret;
+ struct prom_t *_prom = &RELOC(prom);
+
+ ret = call_prom("claim", 3, 1, (prom_arg_t)virt, (prom_arg_t)size,
+ (prom_arg_t)align);
+ if (ret != -1 && _prom->mmumap != 0)
+ /* old pmacs need us to map as well */
+ call_prom("call-method", 6, 1,
+ ADDR("map"), _prom->mmumap, 0, size, virt, virt);
+ return ret;
+}
+
static void __init __attribute__((noreturn)) prom_panic(const char *reason)
{
#ifdef CONFIG_PPC64
@@ -1323,7 +1331,37 @@ static void __init prom_init_client_services(unsigned long pp)
_prom->root = call_prom("finddevice", 1, 1, ADDR("/"));
if (!PHANDLE_VALID(_prom->root))
prom_panic("cannot find device tree root"); /* msg won't be printed :( */
+
+ _prom->mmumap = 0;
+}
+
+#ifdef CONFIG_PPC32
+/*
+ * For really old powermacs, we need to map things we claim.
+ * For that, we need the ihandle of the mmu.
+ */
+static void __init prom_find_mmu(void)
+{
+ struct prom_t *_prom = &RELOC(prom);
+ phandle oprom;
+ char version[64];
+
+ oprom = call_prom("finddevice", 1, 1, ADDR("/openprom"));
+ if (!PHANDLE_VALID(oprom))
+ return;
+ if (prom_getprop(oprom, "model", version, sizeof(version)) <= 0)
+ return;
+ version[sizeof(version) - 1] = 0;
+ prom_printf("OF version is '%s'\n", version);
+ /* XXX might need to add other versions here */
+ if (strcmp(version, "Open Firmware, 1.0.5") != 0)
+ return;
+ prom_getprop(_prom->chosen, "mmu", &_prom->mmumap,
+ sizeof(_prom->mmumap));
}
+#else
+#define prom_find_mmu()
+#endif
static void __init prom_init_stdout(void)
{
@@ -1379,7 +1417,7 @@ static int __init prom_find_machine_type(void)
if (sl == 0)
break;
if (strstr(p, RELOC("Power Macintosh")) ||
- strstr(p, RELOC("MacRISC4")))
+ strstr(p, RELOC("MacRISC")))
return PLATFORM_POWERMAC;
#ifdef CONFIG_PPC64
if (strstr(p, RELOC("Momentum,Maple")))
@@ -1618,22 +1656,17 @@ static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
namep[l] = '\0';
/* Fixup an Apple bug where they have bogus \0 chars in the
- * middle of the path in some properties
+ * middle of the path in some properties, and extract
+ * the unit name (everything after the last '/').
*/
- for (p = namep, ep = namep + l; p < ep; p++)
- if (*p == '\0') {
- memmove(p, p+1, ep - p);
- ep--; l--; p--;
- }
-
- /* now try to extract the unit name in that mess */
- for (p = namep, lp = NULL; *p; p++)
+ for (lp = p = namep, ep = namep + l; p < ep; p++) {
if (*p == '/')
- lp = p + 1;
- if (lp != NULL)
- memmove(namep, lp, strlen(lp) + 1);
- *mem_start = _ALIGN(((unsigned long) namep) +
- strlen(namep) + 1, 4);
+ lp = namep;
+ else if (*p != 0)
+ *lp++ = *p;
+ }
+ *lp = 0;
+ *mem_start = _ALIGN((unsigned long)lp + 1, 4);
}
/* get it again for debugging */
@@ -1858,8 +1891,9 @@ static void __init prom_find_boot_cpu(void)
ihandle prom_cpu;
phandle cpu_pkg;
+ _prom->cpu = 0;
if (prom_getprop(_prom->chosen, "cpu", &prom_cpu, sizeof(prom_cpu)) <= 0)
- prom_panic("cannot find boot cpu");
+ return;
cpu_pkg = call_prom("instance-to-package", 1, 1, prom_cpu);
@@ -1934,6 +1968,11 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4,
prom_init_stdout();
/*
+ * See if this OF is old enough that we need to do explicit maps
+ */
+ prom_find_mmu();
+
+ /*
* Check for an initrd
*/
prom_check_initrd(r3, r4);
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 50f5dd78790..908e4921bac 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -225,7 +225,7 @@ int find_via_pmu(void)
return 0;
printk("WARNING ! Your machine is PMU-based but your kernel\n");
printk(" wasn't compiled with CONFIG_ADB_PMU option !\n");
- return;
+ return 0;
}
#endif
@@ -293,7 +293,7 @@ static void __init l2cr_init(void)
void __init pmac_setup_arch(void)
{
- struct device_node *cpu;
+ struct device_node *cpu, *ic;
int *fp;
unsigned long pvr;
@@ -319,6 +319,12 @@ void __init pmac_setup_arch(void)
of_node_put(cpu);
}
+ /* See if newworld or oldworld */
+ ic = of_find_node_by_name(NULL, "interrupt-controller");
+ pmac_newworld = (ic != NULL);
+ if (ic)
+ of_node_put(ic);
+
/* Lookup PCI hosts */
pmac_pci_init();
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 14:29:14 +0000