/**
* sn_init_pdas - setup node data areas
*
* One time setup for Node Data Area. Called by sn_setup().
*/
static void __init sn_init_pdas(char **cmdline_p)
{
cnodeid_t cnode;
memset(pda->cnodeid_to_nasid_table, -1,
sizeof(pda->cnodeid_to_nasid_table));
for_each_online_node(cnode)
pda->cnodeid_to_nasid_table[cnode] =
pxm_to_nasid(nid_to_pxm_map[cnode]);
numionodes = num_online_nodes();
scan_for_ionodes();
/*
* Allocate & initalize the nodepda for each node.
*/
for_each_online_node(cnode) {
nodepdaindr[cnode] =
alloc_bootmem_node(NODE_DATA(cnode), sizeof(nodepda_t));
memset(nodepdaindr[cnode], 0, sizeof(nodepda_t));
memset(nodepdaindr[cnode]->phys_cpuid, -1,
sizeof(nodepdaindr[cnode]->phys_cpuid));
}
/*
* Allocate & initialize nodepda for TIOs. For now, put them on node 0.
*/
for (cnode = num_online_nodes(); cnode < numionodes; cnode++) {
nodepdaindr[cnode] =
alloc_bootmem_node(NODE_DATA(0), sizeof(nodepda_t));
memset(nodepdaindr[cnode], 0, sizeof(nodepda_t));
}
/*
* Now copy the array of nodepda pointers to each nodepda.
*/
for (cnode = 0; cnode < numionodes; cnode++)
memcpy(nodepdaindr[cnode]->pernode_pdaindr, nodepdaindr,
sizeof(nodepdaindr));
/*
* Set up IO related platform-dependent nodepda fields.
* The following routine actually sets up the hubinfo struct
* in nodepda.
*/
for_each_online_node(cnode) {
bte_init_node(nodepdaindr[cnode], cnode);
}
/*
* Initialize the per node hubdev. This includes IO Nodes and
* headless/memless nodes.
*/
for (cnode = 0; cnode < numionodes; cnode++) {
hubdev_init_node(nodepdaindr[cnode], cnode);
}
}
void __init build_cnode_tables(void)
{
int nasid;
int node;
lboard_t *brd;
memset(physical_node_map, -1, sizeof(physical_node_map));
memset(sn_cnodeid_to_nasid, -1,
sizeof(__ia64_per_cpu_var(__sn_cnodeid_to_nasid)));
/*
* First populate the tables with C/M bricks. This ensures that
* cnode == node for all C & M bricks.
*/
for_each_online_node(node) {
nasid = pxm_to_nasid(node_to_pxm(node));
sn_cnodeid_to_nasid[node] = nasid;
physical_node_map[nasid] = node;
}
/*
* num_cnodes is total number of C/M/TIO bricks. Because of the 256 node
* limit on the number of nodes, we can't use the generic node numbers
* for this. Note that num_cnodes is incremented below as TIOs or
* headless/memoryless nodes are discovered.
*/
num_cnodes = num_online_nodes();
/* fakeprom does not support klgraph */
if (IS_RUNNING_ON_FAKE_PROM())
return;
/* Find TIOs & headless/memoryless nodes and add them to the tables */
for_each_online_node(node) {
kl_config_hdr_t *klgraph_header;
nasid = cnodeid_to_nasid(node);
klgraph_header = ia64_sn_get_klconfig_addr(nasid);
if (klgraph_header == NULL)
BUG();
brd = NODE_OFFSET_TO_LBOARD(nasid, klgraph_header->ch_board_info);
while (brd) {
if (board_needs_cnode(brd->brd_type) && physical_node_map[brd->brd_nasid] < 0) {
sn_cnodeid_to_nasid[num_cnodes] = brd->brd_nasid;
physical_node_map[brd->brd_nasid] = num_cnodes++;
}
brd = find_lboard_next(brd);
}
}
}
/**
* 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();
}
