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[IA64] hotplug/ia64: SN Hotplug Driver - new SN PROM version code

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This patch is a rewrite of the code to check the PROM version.  The current
code has some deficiences in the way PROM comparisons were made.  The minimum
value of PROM that will boot has also been changed to 4.04.

Signed-off-by: Prarit Bhargava <prarit@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Prarit Bhargava
2005-07-06 15:29:13 -07:00
committed by Tony Luck
parent e07d01e0ae
commit 283c7f6ac6
3 changed files with 19 additions and 36 deletions
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13
arch/ia64/sn/kernel/setup.c
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@@ -270,7 +270,7 @@ 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();
u32 version = sn_sal_rev();
extern void sn_cpu_init(void);
ia64_sn_plat_set_error_handling_features();
@@ -308,22 +308,21 @@ void __init sn_setup(char **cmdline_p)
* 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) {
if (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", major, minor);
printk("SGI SAL version %x.%02x\n", version >> 8, version & 0x00FF);
/*
* 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)) {
if (version < SN_SAL_MIN_VERSION) {
printk(KERN_ERR "This kernel needs SGI SAL version >= "
"%x.%02x\n", SN_SAL_MIN_MAJOR, SN_SAL_MIN_MINOR);
"%x.%02x\n", SN_SAL_MIN_VERSION >> 8,
SN_SAL_MIN_VERSION & 0x00FF);
panic("PROM version too old\n");
}