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x86 I/O APIC: Dump I/O APIC regs in ioapic.c

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Some southbridges have code in their `lpc.c` files to dump the
I/O APIC registers.

    printk(BIOS_SPEW, "Dumping IOAPIC registers\n");
    for (i=0; i<3; i++) {
            *ioapic_index = i;
            printk(BIOS_SPEW, "  reg 0x%04x:", i);
            reg32 = *ioapic_data;
            printk(BIOS_SPEW, " 0x%08x\n", reg32);
    }

Add similar code to `src/arch/x86/lib/ioapic.c` so all boards using
the function `set_ioapic_id()` get the debug feature and the other
boards can be more easily adapted in follow-up patches.

Change-Id: Ic59c4c2213ed97bdf3798b3dc6e7cecc30e135d8
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/3184
Reviewed-by: Aaron Durbin <adurbin@google.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
Paul Menzel
2013-04-23 14:49:41 +02:00
committed by Aaron Durbin
parent ac75bc682b
commit 1b3e176468
1 changed files with 7 additions and 0 deletions
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7
src/arch/x86/lib/ioapic.c
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@@ -77,6 +77,7 @@ void clear_ioapic(u32 ioapic_base)
void set_ioapic_id(u32 ioapic_base, u8 ioapic_id) void set_ioapic_id(u32 ioapic_base, u8 ioapic_id)
{ {
u32 bsp_lapicid = lapicid(); u32 bsp_lapicid = lapicid();
int i;
printk(BIOS_DEBUG, "IOAPIC: Initializing IOAPIC at 0x%08x\n", printk(BIOS_DEBUG, "IOAPIC: Initializing IOAPIC at 0x%08x\n",
ioapic_base); ioapic_base);
@@ -90,6 +91,12 @@ void set_ioapic_id(u32 ioapic_base, u8 ioapic_id)
(io_apic_read(ioapic_base, 0x00) & 0xf0ffffff) | (io_apic_read(ioapic_base, 0x00) & 0xf0ffffff) |
(ioapic_id << 24)); (ioapic_id << 24));
} }
printk(BIOS_SPEW, "IOAPIC: Dumping registers\n");
for (i = 0; i < 3; i++)
printk(BIOS_SPEW, " reg 0x%04x: 0x%08x\n", i,
io_apic_read(ioapic_base, i));
} }
static void load_vectors(u32 ioapic_base) static void load_vectors(u32 ioapic_base)