projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 3d232878 BM |
2 | /* |
| 3 | * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com> | |
| 3d232878 BM |
4 | */ |
| 5 | ||
| 6 | #include <common.h> | |
| 7 | #include <asm/io.h> | |
| 8 | #include <asm/ioapic.h> | |
| 1cb1611f | 9 | #include <asm/lapic.h> |
| 3d232878 BM |
10 | |
| 11 | u32 io_apic_read(u32 reg) | |
| 12 | { | |
| 13 | writel(reg, IO_APIC_INDEX); | |
| 14 | return readl(IO_APIC_DATA); | |
| 15 | } | |
| 16 | ||
| 17 | void io_apic_write(u32 reg, u32 val) | |
| 18 | { | |
| 19 | writel(reg, IO_APIC_INDEX); | |
| 20 | writel(val, IO_APIC_DATA); | |
| 21 | } | |
| 1cb1611f SG |
22 | |
| 23 | void io_apic_set_id(int ioapic_id) | |
| 24 | { | |
| 25 | int bsp_lapicid = lapicid(); | |
| 26 | ||
| 27 | debug("IOAPIC: Initialising IOAPIC at %08x\n", IO_APIC_ADDR); | |
| 28 | debug("IOAPIC: Bootstrap Processor Local APIC = %#02x\n", bsp_lapicid); | |
| 29 | ||
| 30 | if (ioapic_id) { | |
| 31 | debug("IOAPIC: ID = 0x%02x\n", ioapic_id); | |
| 32 | /* Set IOAPIC ID if it has been specified */ | |
| 33 | io_apic_write(0x00, (io_apic_read(0x00) & 0xf0ffffff) | | |
| 34 | (ioapic_id << 24)); | |
| 35 | } | |
| 36 | } |