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Commit 1cb1611f authored by Simon Glass's avatar Simon Glass Committed by Bin Meng
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x86: Add a function to set the IOAPIC ID


Add a function to set the ID in the IOAPIC.

Signed-off-by: default avatarSimon Glass <sjg@chromium.org>
Reviewed-by: default avatarBin Meng <bmeng.cn@gmail.com>
parent f21069ff
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......@@ -7,6 +7,7 @@
#include <common.h>
#include <asm/io.h>
#include <asm/ioapic.h>
#include <asm/lapic.h>
u32 io_apic_read(u32 reg)
{
......@@ -19,3 +20,18 @@ void io_apic_write(u32 reg, u32 val)
writel(reg, IO_APIC_INDEX);
writel(val, IO_APIC_DATA);
}
void io_apic_set_id(int ioapic_id)
{
int bsp_lapicid = lapicid();
debug("IOAPIC: Initialising IOAPIC at %08x\n", IO_APIC_ADDR);
debug("IOAPIC: Bootstrap Processor Local APIC = %#02x\n", bsp_lapicid);
if (ioapic_id) {
debug("IOAPIC: ID = 0x%02x\n", ioapic_id);
/* Set IOAPIC ID if it has been specified */
io_apic_write(0x00, (io_apic_read(0x00) & 0xf0ffffff) |
(ioapic_id << 24));
}
}
......@@ -39,4 +39,6 @@ u32 io_apic_read(u32 reg);
*/
void io_apic_write(u32 reg, u32 val);
void io_apic_set_id(int ioapic_id);
#endif
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