/**
* sn_setup - SN platform setup routine
* @cmdline_p: kernel command line
*
* Handles platform setup for SN machines. This includes determining
* the RTC frequency (via a SAL call), initializing secondary CPUs, and
* setting up per-node data areas. The console is also initialized here.
*/
void __init sn_setup(char **cmdline_p)
{
long status, ticks_per_sec, drift;
u32 version = sn_sal_rev();
extern void sn_cpu_init(void);
sn2_rtc_initial = rtc_time();
ia64_sn_plat_set_error_handling_features(); // obsolete
ia64_sn_set_os_feature(OSF_MCA_SLV_TO_OS_INIT_SLV);
ia64_sn_set_os_feature(OSF_FEAT_LOG_SBES);
#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
/*
* Handle SN vga console.
*
* SN systems do not have enough ACPI table information
* being passed from prom to identify VGA adapters and the legacy
* addresses to access them. Until that is done, SN systems rely
* on the PCDP table to identify the primary VGA console if one
* exists.
*
* However, kernel PCDP support is optional, and even if it is built
* into the kernel, it will not be used if the boot cmdline contains
* console= directives.
*
* So, to work around this mess, we duplicate some of the PCDP code
* here so that the primary VGA console (as defined by PCDP) will
* work on SN systems even if a different console (e.g. serial) is
* selected on the boot line (or CONFIG_EFI_PCDP is off).
*/
if (! vga_console_membase)
sn_scan_pcdp();
if (vga_console_membase) {
/* usable vga ... make tty0 the preferred default console */
if (!strstr(*cmdline_p, "console="))
add_preferred_console("tty", 0, NULL);
} else {
printk(KERN_DEBUG "SGI: Disabling VGA console\n");
if (!strstr(*cmdline_p, "console="))
add_preferred_console("ttySG", 0, NULL);
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#else
conswitchp = NULL;
#endif /* CONFIG_DUMMY_CONSOLE */
}
#endif /* def(CONFIG_VT) && def(CONFIG_VGA_CONSOLE) */
MAX_DMA_ADDRESS = PAGE_OFFSET + MAX_PHYS_MEMORY;
/*
* Build the tables for managing cnodes.
*/
build_cnode_tables();
status =
ia64_sal_freq_base(SAL_FREQ_BASE_REALTIME_CLOCK, &ticks_per_sec,
&drift);
if (status != 0 || ticks_per_sec < 100000) {
printk(KERN_WARNING
"unable to determine platform RTC clock frequency, guessing.\n");
/* PROM gives wrong value for clock freq. so guess */
sn_rtc_cycles_per_second = 1000000000000UL / 30000UL;
} else
sn_rtc_cycles_per_second = ticks_per_sec;
platform_intr_list[ACPI_INTERRUPT_CPEI] = IA64_CPE_VECTOR;
ia64_printk_clock = ia64_sn2_printk_clock;
/*
* Old PROMs do not provide an ACPI FADT. Disable legacy keyboard
* support here so we don't have to listen to failed keyboard probe
* messages.
*/
if (is_shub1() && version <= 0x0209 && acpi_kbd_controller_present) {
printk(KERN_INFO "Disabling legacy keyboard support as prom "
"is too old and doesn't provide FADT\n");
acpi_kbd_controller_present = 0;
}
printk("SGI SAL version %x.%02x\n", version >> 8, version & 0x00FF);
/*
* we set the default root device to /dev/hda
* to make simulation easy
*/
ROOT_DEV = Root_HDA1;
/*
* Create the PDAs and NODEPDAs for all the cpus.
*/
sn_init_pdas(cmdline_p);
ia64_mark_idle = &snidle;
/*
* For the bootcpu, we do this here. All other cpus will make the
* call as part of cpu_init in slave cpu initialization.
*/
sn_cpu_init();
#ifdef CONFIG_SMP
init_smp_config();
#endif
screen_info = sn_screen_info;
sn_timer_init();
/*
* set pm_power_off to a SAL call to allow
* sn machines to power off. The SAL call can be replaced
* by an ACPI interface call when ACPI is fully implemented
* for sn.
*/
pm_power_off = ia64_sn_power_down;
current->thread.flags |= IA64_THREAD_MIGRATION;
}
/**
* sn_setup - SN platform setup routine
* @cmdline_p: kernel command line
*
* Handles platform setup for SN machines. This includes determining
* the RTC frequency (via a SAL call), initializing secondary CPUs, and
* setting up per-node data areas. The console is also initialized here.
*/
void __init sn_setup(char **cmdline_p)
{
long status, ticks_per_sec, drift;
int pxm;
int major = sn_sal_rev_major(), minor = sn_sal_rev_minor();
extern void sn_cpu_init(void);
/*
* If the generic code has enabled vga console support - lets
* get rid of it again. This is a kludge for the fact that ACPI
* currtently has no way of informing us if legacy VGA is available
* or not.
*/
#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
if (conswitchp == &vga_con) {
printk(KERN_DEBUG "SGI: Disabling VGA console\n");
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#else
conswitchp = NULL;
#endif /* CONFIG_DUMMY_CONSOLE */
}
#endif /* def(CONFIG_VT) && def(CONFIG_VGA_CONSOLE) */
MAX_DMA_ADDRESS = PAGE_OFFSET + MAX_PHYS_MEMORY;
memset(physical_node_map, -1, sizeof(physical_node_map));
for (pxm = 0; pxm < MAX_PXM_DOMAINS; pxm++)
if (pxm_to_nid_map[pxm] != -1)
physical_node_map[pxm_to_nasid(pxm)] =
pxm_to_nid_map[pxm];
/*
* Old PROMs do not provide an ACPI FADT. Disable legacy keyboard
* support here so we don't have to listen to failed keyboard probe
* messages.
*/
if ((major < 2 || (major == 2 && minor <= 9)) &&
acpi_kbd_controller_present) {
printk(KERN_INFO "Disabling legacy keyboard support as prom "
"is too old and doesn't provide FADT\n");
acpi_kbd_controller_present = 0;
}
printk("SGI SAL version %x.%02x\n", major, minor);
/*
* Confirm the SAL we're running on is recent enough...
*/
if ((major < SN_SAL_MIN_MAJOR) || (major == SN_SAL_MIN_MAJOR &&
minor < SN_SAL_MIN_MINOR)) {
printk(KERN_ERR "This kernel needs SGI SAL version >= "
"%x.%02x\n", SN_SAL_MIN_MAJOR, SN_SAL_MIN_MINOR);
panic("PROM version too old\n");
}
master_nasid = boot_get_nasid();
status =
ia64_sal_freq_base(SAL_FREQ_BASE_REALTIME_CLOCK, &ticks_per_sec,
&drift);
if (status != 0 || ticks_per_sec < 100000) {
printk(KERN_WARNING
"unable to determine platform RTC clock frequency, guessing.\n");
/* PROM gives wrong value for clock freq. so guess */
sn_rtc_cycles_per_second = 1000000000000UL / 30000UL;
} else
sn_rtc_cycles_per_second = ticks_per_sec;
platform_intr_list[ACPI_INTERRUPT_CPEI] = IA64_CPE_VECTOR;
/*
* we set the default root device to /dev/hda
* to make simulation easy
*/
ROOT_DEV = Root_HDA1;
/*
* Create the PDAs and NODEPDAs for all the cpus.
*/
sn_init_pdas(cmdline_p);
ia64_mark_idle = &snidle;
/*
* For the bootcpu, we do this here. All other cpus will make the
* call as part of cpu_init in slave cpu initialization.
*/
sn_cpu_init();
#ifdef CONFIG_SMP
init_smp_config();
#endif
screen_info = sn_screen_info;
sn_timer_init();
}
