* bootup setup stuff..
*/
+#undef DEBUG
+
#include <linux/config.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <asm/iommu.h>
#include <asm/machdep.h>
#include <asm/dma.h>
-#include <asm/bootx.h>
#include <asm/btext.h>
#include <asm/cputable.h>
#include <asm/pmac_feature.h>
#include "pmac.h"
+#ifdef DEBUG
+#define DBG(fmt...) udbg_printf(fmt)
+#else
+#define DBG(fmt...)
+#endif
+
+
static int current_root_goodness = -1;
#define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */
extern void udbg_init_scc(struct device_node *np);
-#ifdef CONFIG_BOOTX_TEXT
-void pmac_progress(char *s, unsigned short hex);
-#endif
-
void __pmac pmac_show_cpuinfo(struct seq_file *m)
{
struct device_node *np;
void __init pmac_setup_arch(void)
{
- struct device_node *cpu;
- int *fp;
- unsigned long pvr;
-
- pvr = PVR_VER(mfspr(PVR));
-
- /* Set loops_per_jiffy to a half-way reasonable value,
- for use until calibrate_delay gets called. */
- cpu = find_type_devices("cpu");
- if (cpu != 0) {
- fp = (int *) get_property(cpu, "clock-frequency", NULL);
- if (fp != 0) {
- if (pvr == 4 || pvr >= 8)
- /* 604, G3, G4 etc. */
- loops_per_jiffy = *fp / HZ;
- else
- /* 601, 603, etc. */
- loops_per_jiffy = *fp / (2*HZ);
- } else
- loops_per_jiffy = 50000000 / HZ;
+ /* init to some ~sane value until calibrate_delay() runs */
+ loops_per_jiffy = 50000000;
+
+ /* Probe motherboard chipset */
+ pmac_feature_init();
+#if 0
+ /* Lock-enable the SCC channel used for debug */
+ if (sccdbg) {
+ np = of_find_node_by_name(NULL, "escc");
+ if (np)
+ pmac_call_feature(PMAC_FTR_SCC_ENABLE, np,
+ PMAC_SCC_ASYNC | PMAC_SCC_FLAG_XMON, 1);
}
-
+#endif
/* We can NAP */
powersave_nap = 1;
#endif
}
-extern char *bootpath;
-extern char *bootdevice;
-void *boot_host;
-int boot_target;
-int boot_part;
-extern dev_t boot_dev;
-
#ifdef CONFIG_SCSI
-void __init note_scsi_host(struct device_node *node, void *host)
+void note_scsi_host(struct device_node *node, void *host)
{
- int l;
- char *p;
-
- l = strlen(node->full_name);
- if (bootpath != NULL && bootdevice != NULL
- && strncmp(node->full_name, bootdevice, l) == 0
- && (bootdevice[l] == '/' || bootdevice[l] == 0)) {
- boot_host = host;
- /*
- * There's a bug in OF 1.0.5. (Why am I not surprised.)
- * If you pass a path like scsi/sd@1:0 to canon, it returns
- * something like /bandit@F2000000/gc@10/53c94@10000/sd@0,0
- * That is, the scsi target number doesn't get preserved.
- * So we pick the target number out of bootpath and use that.
- */
- p = strstr(bootpath, "/sd@");
- if (p != NULL) {
- p += 4;
- boot_target = simple_strtoul(p, NULL, 10);
- p = strchr(p, ':');
- if (p != NULL)
- boot_part = simple_strtoul(p + 1, NULL, 10);
- }
- }
+ /* Obsolete */
}
#endif
-#if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
-static dev_t __init find_ide_boot(void)
-{
- char *p;
- int n;
- dev_t __init pmac_find_ide_boot(char *bootdevice, int n);
-
- if (bootdevice == NULL)
- return 0;
- p = strrchr(bootdevice, '/');
- if (p == NULL)
- return 0;
- n = p - bootdevice;
-
- return pmac_find_ide_boot(bootdevice, n);
-}
-#endif /* CONFIG_BLK_DEV_IDE && CONFIG_BLK_DEV_IDE_PMAC */
-
-void __init find_boot_device(void)
-{
-#if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
- boot_dev = find_ide_boot();
-#endif
-}
static int initializing = 1;
/* can't be __init - can be called whenever a disk is first accessed */
void __pmac note_bootable_part(dev_t dev, int part, int goodness)
{
- static int found_boot = 0;
+ extern dev_t boot_dev;
char *p;
if (!initializing)
if (p != NULL && (p == saved_command_line || p[-1] == ' '))
return;
- if (!found_boot) {
- find_boot_device();
- found_boot = 1;
- }
if (!boot_dev || dev == boot_dev) {
ROOT_DEV = dev + part;
boot_dev = 0;
}
#endif /* CONFIG_BOOTX_TEXT */
+static void __init init_boot_display(void)
+{
+ char *name;
+ struct device_node *np = NULL;
+ int rc = -ENODEV;
+
+ printk("trying to initialize btext ...\n");
+
+ name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
+ if (name != NULL) {
+ np = of_find_node_by_path(name);
+ if (np != NULL) {
+ if (strcmp(np->type, "display") != 0) {
+ printk("boot stdout isn't a display !\n");
+ of_node_put(np);
+ np = NULL;
+ }
+ }
+ }
+ if (np)
+ rc = btext_initialize(np);
+ if (rc == 0)
+ return;
+
+ for (np = NULL; (np = of_find_node_by_type(np, "display"));) {
+ if (get_property(np, "linux,opened", NULL)) {
+ printk("trying %s ...\n", np->full_name);
+ rc = btext_initialize(np);
+ printk("result: %d\n", rc);
+ }
+ if (rc == 0)
+ return;
+ }
+}
+
/*
* Early initialization.
- * Relocation is on but do not reference unbolted pages
- * Also, device-tree hasn't been "finished", so don't muck with
- * it too much
*/
void __init pmac_init_early(void)
{
- hpte_init_pSeries();
+ DBG(" -> pmac_init_early\n");
+
+ /* Initialize hash table, from now on, we can take hash faults
+ * and call ioremap
+ */
+ hpte_init_native();
+ /* Init SCC */
+ if (strstr(cmd_line, "sccdbg")) {
+ sccdbg = 1;
+ udbg_init_scc(NULL);
+ }
+
+ else {
#ifdef CONFIG_BOOTX_TEXT
- ppc_md.udbg_putc = btext_putc;
- ppc_md.udbg_getc = dummy_getc;
- ppc_md.udbg_getc_poll = dummy_getc_poll;
+ init_boot_display();
+
+ ppc_md.udbg_putc = btext_putc;
+ ppc_md.udbg_getc = dummy_getc;
+ ppc_md.udbg_getc_poll = dummy_getc_poll;
#endif /* CONFIG_BOOTX_TEXT */
+ }
+
+ /* Setup interrupt mapping options */
+ naca->interrupt_controller = IC_OPEN_PIC;
+
+ DBG(" <- pmac_init_early\n");
}
extern void* OpenPIC_Addr;
core_initcall(pmac_irq_cascade_init);
-void __init pmac_init(unsigned long r3, unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7)
-{
- /* Probe motherboard chipset */
- pmac_feature_init();
-
- /* Init SCC */
- if (strstr(cmd_line, "sccdbg")) {
- sccdbg = 1;
- udbg_init_scc(NULL);
- }
-
- /* Fill up the machine description */
- ppc_md.setup_arch = pmac_setup_arch;
- ppc_md.get_cpuinfo = pmac_show_cpuinfo;
-
- ppc_md.init_IRQ = pmac_init_IRQ;
- ppc_md.get_irq = openpic_get_irq;
-
- ppc_md.pcibios_fixup = pmac_pcibios_fixup;
-
- ppc_md.restart = pmac_restart;
- ppc_md.power_off = pmac_power_off;
- ppc_md.halt = pmac_halt;
-
- ppc_md.get_boot_time = pmac_get_boot_time;
- ppc_md.set_rtc_time = pmac_set_rtc_time;
- ppc_md.get_rtc_time = pmac_get_rtc_time;
- ppc_md.calibrate_decr = pmac_calibrate_decr;
-
- ppc_md.feature_call = pmac_do_feature_call;
-
-
-#ifdef CONFIG_BOOTX_TEXT
- ppc_md.progress = pmac_progress;
-#endif /* CONFIG_BOOTX_TEXT */
-
- if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0);
-
-}
-
-#ifdef CONFIG_BOOTX_TEXT
-void __init pmac_progress(char *s, unsigned short hex)
+static void __init pmac_progress(char *s, unsigned short hex)
{
if (sccdbg) {
udbg_puts(s);
- udbg_putc('\n');
+ udbg_puts("\n");
}
+#ifdef CONFIG_BOOTX_TEXT
else if (boot_text_mapped) {
btext_drawstring(s);
- btext_drawchar('\n');
+ btext_drawstring("\n");
}
-}
#endif /* CONFIG_BOOTX_TEXT */
+}
static int __init pmac_declare_of_platform_devices(void)
{
}
device_initcall(pmac_declare_of_platform_devices);
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init pmac_probe(int platform)
+{
+ if (platform != PLATFORM_POWERMAC)
+ return 0;
+
+ /*
+ * On U3, the DART (iommu) must be allocated now since it
+ * has an impact on htab_initialize (due to the large page it
+ * occupies having to be broken up so the DART itself is not
+ * part of the cacheable linar mapping
+ */
+ alloc_u3_dart_table();
+
+ return 1;
+}
+
+struct machdep_calls __initdata pmac_md = {
+ .probe = pmac_probe,
+ .setup_arch = pmac_setup_arch,
+ .init_early = pmac_init_early,
+ .get_cpuinfo = pmac_show_cpuinfo,
+ .init_IRQ = pmac_init_IRQ,
+ .get_irq = openpic_get_irq,
+ .pcibios_fixup = pmac_pcibios_fixup,
+ .restart = pmac_restart,
+ .power_off = pmac_power_off,
+ .halt = pmac_halt,
+ .get_boot_time = pmac_get_boot_time,
+ .set_rtc_time = pmac_set_rtc_time,
+ .get_rtc_time = pmac_get_rtc_time,
+ .calibrate_decr = pmac_calibrate_decr,
+ .feature_call = pmac_do_feature_call,
+ .progress = pmac_progress,
+};
git://git.onelab.eu / linux-2.6.git / blobdiff