#include <asm/sal.h>
#include <asm/sections.h>
#include <asm/serial.h>
+#include <asm/setup.h>
#include <asm/smp.h>
#include <asm/system.h>
#include <asm/unistd.h>
unsigned long ia64_max_iommu_merge_mask = ~0UL;
EXPORT_SYMBOL(ia64_max_iommu_merge_mask);
-#define COMMAND_LINE_SIZE 512
-
-char saved_command_line[COMMAND_LINE_SIZE]; /* used in proc filesystem */
-
/*
* We use a special marker for the end of memory and it uses the extra (+1) slot
*/
}
#endif
+/**
+ * early_console_setup - setup debugging console
+ *
+ * Consoles started here require little enough setup that we can start using
+ * them very early in the boot process, either right after the machine
+ * vector initialization, or even before if the drivers can detect their hw.
+ *
+ * Returns non-zero if a console couldn't be setup.
+ */
+static inline int __init
+early_console_setup (void)
+{
+#ifdef CONFIG_SERIAL_SGI_L1_CONSOLE
+ {
+ extern int sn_serial_console_early_setup(void);
+ if(!sn_serial_console_early_setup())
+ return 0;
+ }
+#endif
+
+ return -1;
+}
+
void __init
setup_arch (char **cmdline_p)
{
ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist);
*cmdline_p = __va(ia64_boot_param->command_line);
- strlcpy(saved_command_line, *cmdline_p, sizeof(saved_command_line));
+ strlcpy(saved_command_line, *cmdline_p, COMMAND_LINE_SIZE);
efi_init();
io_port_init();
machvec_init(acpi_get_sysname());
#endif
+#ifdef CONFIG_SMP
+ /* If we register an early console, allow CPU 0 to printk */
+ if (!early_console_setup())
+ cpu_set(smp_processor_id(), cpu_online_map);
+#endif
+
#ifdef CONFIG_ACPI_BOOT
/* Initialize the ACPI boot-time table parser */
acpi_table_init();
#ifdef CONFIG_ACPI_BOOT
acpi_boot_init();
#endif
-#ifdef CONFIG_SERIAL_8250_CONSOLE
-#ifdef CONFIG_SERIAL_8250_HCDP
- if (efi.hcdp) {
- void setup_serial_hcdp(void *);
- setup_serial_hcdp(efi.hcdp);
- }
+#ifdef CONFIG_EFI_PCDP
+ efi_setup_pcdp_console(*cmdline_p);
#endif
- /*
- * Without HCDP, we won't discover any serial ports until the serial driver looks
- * in the ACPI namespace. If ACPI claims there are some legacy devices, register
- * the legacy COM ports so serial console works earlier. This is slightly dangerous
- * because we don't *really* know whether there's anything there, but we hope that
- * all new boxes will implement HCDP.
- */
- {
- extern unsigned char acpi_legacy_devices;
- if (!efi.hcdp && acpi_legacy_devices)
- setup_serial_legacy();
- }
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+ if (!efi.hcdp)
+ setup_serial_legacy();
#endif
#ifdef CONFIG_VT
+ if (!conswitchp) {
# if defined(CONFIG_DUMMY_CONSOLE)
- conswitchp = &dummy_con;
+ conswitchp = &dummy_con;
# endif
# if defined(CONFIG_VGA_CONSOLE)
- /*
- * Non-legacy systems may route legacy VGA MMIO range to system
- * memory. vga_con probes the MMIO hole, so memory looks like
- * a VGA device to it. The EFI memory map can tell us if it's
- * memory so we can avoid this problem.
- */
- if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY)
- conswitchp = &vga_con;
+ /*
+ * Non-legacy systems may route legacy VGA MMIO range to system
+ * memory. vga_con probes the MMIO hole, so memory looks like
+ * a VGA device to it. The EFI memory map can tell us if it's
+ * memory so we can avoid this problem.
+ */
+ if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY)
+ conswitchp = &vga_con;
# endif
+ }
#endif
- /* enable IA-64 Machine Check Abort Handling */
- ia64_mca_init();
-
+ /* enable IA-64 Machine Check Abort Handling unless disabled */
+ if (!strstr(saved_command_line, "nomca"))
+ ia64_mca_init();
+
platform_setup(cmdline_p);
paging_init();
}
void
cpu_init (void)
{
- extern void __init ia64_mmu_init (void *);
+ extern void __devinit ia64_mmu_init (void *);
unsigned long num_phys_stacked;
pal_vm_info_2_u_t vmi;
unsigned int max_ctx;
ia32_cpu_init();
#endif
+ /* Clear ITC to eliminiate sched_clock() overflows in human time. */
+ ia64_set_itc(0);
+
/* disable all local interrupt sources: */
ia64_set_itv(1 << 16);
ia64_set_lrr0(1 << 16);