LoongArch inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I82GAS
--------------------------------
Signed-off-by: liuyun liuyun@loongson.cn Signed-off-by: yangyinglu yangyinglu@loongson.cn --- arch/loongarch/include/asm/addrspace.h | 1 + arch/loongarch/include/asm/efi.h | 1 + arch/loongarch/kernel/Makefile | 1 + arch/loongarch/kernel/acpi.c | 7 +- arch/loongarch/kernel/efi.c | 11 +- arch/loongarch/kernel/env.c | 6 + arch/loongarch/kernel/irq.c | 25 +- arch/loongarch/kernel/legacy_boot.c | 466 +++++++++++++++++++++++++ arch/loongarch/kernel/legacy_boot.h | 90 +++++ arch/loongarch/kernel/mem.c | 26 +- arch/loongarch/kernel/numa.c | 39 ++- arch/loongarch/kernel/reset.c | 3 +- arch/loongarch/kernel/setup.c | 18 +- arch/loongarch/kernel/smp.c | 6 +- arch/loongarch/pci/acpi.c | 147 +++++++- drivers/firmware/efi/Makefile | 1 + drivers/irqchip/irq-loongarch-cpu.c | 7 +- drivers/irqchip/irq-loongson-eiointc.c | 4 +- drivers/irqchip/irq-loongson-pch-pic.c | 5 + 19 files changed, 838 insertions(+), 26 deletions(-) create mode 100644 arch/loongarch/kernel/legacy_boot.c create mode 100644 arch/loongarch/kernel/legacy_boot.h
diff --git a/arch/loongarch/include/asm/addrspace.h b/arch/loongarch/include/asm/addrspace.h index 5c9c03bdf915..1428065d4985 100644 --- a/arch/loongarch/include/asm/addrspace.h +++ b/arch/loongarch/include/asm/addrspace.h @@ -124,6 +124,7 @@ extern unsigned long vm_map_base; #define PCI_IOSIZE SZ_32M #define ISA_IOSIZE SZ_16K #define IO_SPACE_LIMIT (PCI_IOSIZE - 1) +#define ISA_PHY_IOBASE LOONGSON_LIO_BASE
#define PHYS_LINK_KADDR PHYSADDR(VMLINUX_LOAD_ADDRESS)
diff --git a/arch/loongarch/include/asm/efi.h b/arch/loongarch/include/asm/efi.h index 091897d40b03..ca4e66dc4035 100644 --- a/arch/loongarch/include/asm/efi.h +++ b/arch/loongarch/include/asm/efi.h @@ -6,6 +6,7 @@ #define _ASM_LOONGARCH_EFI_H
#include <linux/efi.h> +#include <asm/early_ioremap.h>
void __init efi_init(void); void __init efi_runtime_init(void); diff --git a/arch/loongarch/kernel/Makefile b/arch/loongarch/kernel/Makefile index 8e279f04f9e7..855ef568b0c8 100644 --- a/arch/loongarch/kernel/Makefile +++ b/arch/loongarch/kernel/Makefile @@ -9,6 +9,7 @@ obj-y += head.o cpu-probe.o cacheinfo.o env.o setup.o entry.o genex.o \ traps.o irq.o idle.o process.o dma.o mem.o io.o reset.o switch.o \ elf.o syscall.o signal.o time.o topology.o inst.o ptrace.o vdso.o \ alternative.o unwind.o +obj-y += legacy_boot.o
obj-$(CONFIG_ACPI) += acpi.o obj-$(CONFIG_EFI) += efi.o diff --git a/arch/loongarch/kernel/acpi.c b/arch/loongarch/kernel/acpi.c index 9450e09073eb..d17b32f414c8 100644 --- a/arch/loongarch/kernel/acpi.c +++ b/arch/loongarch/kernel/acpi.c @@ -17,6 +17,7 @@ #include <asm/io.h> #include <asm/numa.h> #include <asm/loongson.h> +#include "legacy_boot.h"
int acpi_disabled; EXPORT_SYMBOL(acpi_disabled); @@ -60,7 +61,7 @@ void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size) }
#ifdef CONFIG_SMP -static int set_processor_mask(u32 id, u32 flags) +int set_processor_mask(u32 id, u32 flags) {
int cpu, cpuid = id; @@ -134,6 +135,10 @@ static void __init acpi_process_madt(void) __cpu_logical_map[i] = -1; } #endif + + if (efi_bp && bpi_version <= BPI_VERSION_V1) + legacy_madt_table_init(); + acpi_table_parse_madt(ACPI_MADT_TYPE_CORE_PIC, acpi_parse_processor, MAX_CORE_PIC);
diff --git a/arch/loongarch/kernel/efi.c b/arch/loongarch/kernel/efi.c index 0ae39546360f..8f6e34a9fd91 100644 --- a/arch/loongarch/kernel/efi.c +++ b/arch/loongarch/kernel/efi.c @@ -25,6 +25,7 @@ #include <asm/tlb.h> #include <asm/loongson.h> #include <asm/pgalloc.h> +#include "legacy_boot.h"
static unsigned long efi_nr_tables; static unsigned long efi_config_table; @@ -172,6 +173,9 @@ static int __init set_virtual_map(void) efi_set_virtual_address_map_t *svam; efi_memory_desc_t *in, runtime_map[32];
+ if (efi_bp) + return EFI_SUCCESS; + size = sizeof(efi_memory_desc_t);
for_each_efi_memory_desc(in) { @@ -254,10 +258,11 @@ void __init efi_init(void) void *config_tables; struct efi_boot_memmap *tbl;
- if (!efi_system_table) - return; + if (efi_system_table) + efi_systab = (efi_system_table_t *)early_memremap_ro(efi_system_table, sizeof(*efi_systab)); + else + efi_systab = (efi_system_table_t *)efi_bp->systemtable;
- efi_systab = (efi_system_table_t *)early_memremap_ro(efi_system_table, sizeof(*efi_systab)); if (!efi_systab) { pr_err("Can't find EFI system table.\n"); return; diff --git a/arch/loongarch/kernel/env.c b/arch/loongarch/kernel/env.c index 6b3bfb0092e6..85dbfb1256eb 100644 --- a/arch/loongarch/kernel/env.c +++ b/arch/loongarch/kernel/env.c @@ -12,6 +12,7 @@ #include <asm/bootinfo.h> #include <asm/loongson.h> #include <asm/setup.h> +#include "legacy_boot.h"
u64 efi_system_table; struct loongson_system_configuration loongson_sysconf; @@ -22,6 +23,11 @@ void __init init_environ(void) int efi_boot = fw_arg0; char *cmdline = early_memremap_ro(fw_arg1, COMMAND_LINE_SIZE);
+ legacy_boot_init(fw_arg0, fw_arg1, fw_arg2); + + if (efi_bp) + return; + if (efi_boot) set_bit(EFI_BOOT, &efi.flags); else diff --git a/arch/loongarch/kernel/irq.c b/arch/loongarch/kernel/irq.c index 883e5066ae44..22562bb6fdc4 100644 --- a/arch/loongarch/kernel/irq.c +++ b/arch/loongarch/kernel/irq.c @@ -20,6 +20,7 @@ #include <asm/irq.h> #include <asm/loongson.h> #include <asm/setup.h> +#include "legacy_boot.h"
DEFINE_PER_CPU(unsigned long, irq_stack); DEFINE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat); @@ -61,6 +62,12 @@ static int __init early_pci_mcfg_parse(struct acpi_table_header *header) if (header->length < sizeof(struct acpi_table_mcfg)) return -EINVAL;
+ for (i = 0; i < MAX_IO_PICS; i++) { + msi_group[i].pci_segment = -1; + msi_group[i].node = -1; + pch_group[i].node = -1; + } + n = (header->length - sizeof(struct acpi_table_mcfg)) / sizeof(struct acpi_mcfg_allocation); mcfg = (struct acpi_table_mcfg *)header; @@ -76,14 +83,6 @@ static int __init early_pci_mcfg_parse(struct acpi_table_header *header)
static void __init init_vec_parent_group(void) { - int i; - - for (i = 0; i < MAX_IO_PICS; i++) { - msi_group[i].pci_segment = -1; - msi_group[i].node = -1; - pch_group[i].node = -1; - } - acpi_table_parse(ACPI_SIG_MCFG, early_pci_mcfg_parse); }
@@ -99,7 +98,7 @@ static int __init get_ipi_irq(void)
void __init init_IRQ(void) { - int i; + int i, ret; #ifdef CONFIG_SMP int r, ipi_irq; static int ipi_dummy_dev; @@ -111,7 +110,13 @@ void __init init_IRQ(void) clear_csr_estat(ESTATF_IP);
init_vec_parent_group(); - irqchip_init(); + if (efi_bp && bpi_version <= BPI_VERSION_V1) { + ret = setup_legacy_IRQ(); + if (ret) + panic("IRQ domain init error!\n"); + } else { + irqchip_init(); + } #ifdef CONFIG_SMP ipi_irq = get_ipi_irq(); if (ipi_irq < 0) diff --git a/arch/loongarch/kernel/legacy_boot.c b/arch/loongarch/kernel/legacy_boot.c new file mode 100644 index 000000000000..c7ec165c8875 --- /dev/null +++ b/arch/loongarch/kernel/legacy_boot.c @@ -0,0 +1,466 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Author: Yun Liu, liuyun@loongson.cn + * Copyright (C) 2020 Loongson Technology Co., Ltd. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/acpi.h> +#include <linux/efi.h> +#include <linux/export.h> +#include <linux/memblock.h> +#include <linux/of_fdt.h> +#include <linux/initrd.h> +#include <asm/early_ioremap.h> +#include <asm/bootinfo.h> +#include <asm/loongson.h> +#include "legacy_boot.h" + +#define MAX_CORE_PIC 256 +#define PREFIX "ACPI: " + +#define MSI_MSG_ADDRESS 0x2FF00000 +#define MSI_MSG_DEFAULT_COUNT 0xC0 + +struct boot_params *efi_bp; +struct loongsonlist_mem_map *g_mmap; +struct acpi_madt_lio_pic *acpi_liointc; +struct acpi_madt_eio_pic *acpi_eiointc[MAX_IO_PICS]; + +struct acpi_madt_ht_pic *acpi_htintc; +struct acpi_madt_lpc_pic *acpi_pchlpc; +struct acpi_madt_msi_pic *acpi_pchmsi[MAX_IO_PICS]; +struct acpi_madt_bio_pic *acpi_pchpic[MAX_IO_PICS]; + +struct irq_domain *cpu_domain; +struct irq_domain *liointc_domain; +struct irq_domain *pch_lpc_domain; +struct irq_domain *pch_msi_domain[MAX_IO_PICS]; +struct irq_domain *pch_pic_domain[MAX_IO_PICS]; + +char arcs_cmdline[COMMAND_LINE_SIZE]; +int nr_io_pics; +int bpi_version; + +struct acpi_madt_lio_pic liointc_default = { + .address = LOONGSON_REG_BASE + 0x1400, + .size = 256, + .cascade = {2, 3}, + .cascade_map = {0x00FFFFFF, 0xff000000}, +}; + +struct acpi_madt_lpc_pic pchlpc_default = { + .address = LS7A_LPC_REG_BASE, + .size = SZ_4K, + .cascade = 19, +}; + +struct acpi_madt_eio_pic eiointc_default[MAX_IO_PICS]; +struct acpi_madt_msi_pic pchmsi_default[MAX_IO_PICS]; +struct acpi_madt_bio_pic pchpic_default[MAX_IO_PICS]; + +static int +acpi_parse_lapic(union acpi_subtable_headers *header, const unsigned long end) +{ + struct acpi_madt_local_apic *processor = NULL; + + processor = (struct acpi_madt_local_apic *)header; + if (BAD_MADT_ENTRY(processor, end)) + return -EINVAL; + + acpi_table_print_madt_entry(&header->common); + set_processor_mask(processor->id, processor->lapic_flags); + + return 0; +} + +static int bad_pch_pic(unsigned long address) +{ + if (nr_io_pics >= MAX_IO_PICS) { + pr_warn("WARNING: Max # of I/O PCH_PICs (%d) exceeded (found %d), skipping\n", + MAX_IO_PICS, nr_io_pics); + return 1; + } + if (!address) { + pr_warn("WARNING: Bogus (zero) I/O PCH_PIC address found in table, skipping!\n"); + return 1; + } + return 0; +} + +void register_default_pic(int id, u32 address, u32 irq_base) +{ + int idx, entries; + unsigned long addr; + + if (bad_pch_pic(address)) + return; + + idx = nr_io_pics; + + pchpic_default[idx].address = address; + if (idx) + pchpic_default[idx].address |= nid_to_addrbase(id) | HT1LO_OFFSET; + pchpic_default[idx].id = id; + pchpic_default[idx].version = 0; + pchpic_default[idx].size = 0x1000; + pchpic_default[idx].gsi_base = irq_base; + + msi_group[nr_io_pics].pci_segment = nr_io_pics; + pch_group[nr_io_pics].node = msi_group[nr_io_pics].node = id; + + addr = pchpic_default[idx].address; + /* Read INT_ID.int_num */ + entries = (((unsigned long)ls7a_readq(addr) >> 48) & 0xff) + 1; + pchmsi_default[idx].msg_address = MSI_MSG_ADDRESS; + pchmsi_default[idx].start = entries; + pchmsi_default[idx].count = MSI_MSG_DEFAULT_COUNT; + + eiointc_default[idx].cascade = 3; + eiointc_default[idx].node = id; + eiointc_default[idx].node_map = 1; + + if (idx) { + eiointc_default[idx].cascade = 0x4; + eiointc_default[0].node_map = 0x1DF; + eiointc_default[idx].node_map = 0xFE20; + } + + acpi_pchpic[idx] = &pchpic_default[idx]; + acpi_pchmsi[idx] = &pchmsi_default[idx]; + acpi_eiointc[idx] = &eiointc_default[idx]; + + nr_io_pics++; +} + +static int +acpi_parse_legacy_pch_pic(union acpi_subtable_headers *header, const unsigned long end) +{ + struct acpi_madt_io_apic *pch_pic = NULL; + + pch_pic = (struct acpi_madt_io_apic *)header; + + if (BAD_MADT_ENTRY(pch_pic, end)) + return -EINVAL; + + acpi_table_print_madt_entry(&header->common); + + register_default_pic(pch_pic->id, pch_pic->address, + pch_pic->global_irq_base); + + return 0; +} + +__init int legacy_madt_table_init(void) +{ + /* Parse MADT LAPIC entries */ + acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, acpi_parse_lapic, MAX_CORE_PIC); + acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_legacy_pch_pic, MAX_IO_PICS); + + acpi_liointc = &liointc_default; + acpi_pchlpc = &pchlpc_default; + + return 0; +} + +int setup_legacy_IRQ(void) +{ + int i, ret; + struct irq_domain *pic_domain; + + if (!acpi_eiointc[0]) + cpu_data[0].options &= ~LOONGARCH_CPU_EXTIOI; + + ret = cpuintc_acpi_init(NULL, 0); + if (ret) { + printk("CPU domain init error!\n"); + return -1; + } + cpu_domain = get_cpudomain(); + ret = liointc_acpi_init(cpu_domain, acpi_liointc); + if (ret) { + printk("Liointc domain init error!\n"); + return -1; + } + liointc_domain = irq_find_matching_fwnode(liointc_handle, DOMAIN_BUS_ANY); + if (cpu_has_extioi) { + pr_info("Using EIOINTC interrupt mode\n"); + for (i = 0; i < nr_io_pics; i++) { + ret = eiointc_acpi_init(cpu_domain, acpi_eiointc[i]); + if (ret) { + printk("Eiointc domain init error!\n"); + return -1; + } + + pch_pic_parse_madt((union acpi_subtable_headers *)acpi_pchpic[i], 0); + pch_msi_parse_madt((union acpi_subtable_headers *)acpi_pchmsi[i], 0); + } + /* HTVECINTC maybe not use */ + } else { + pr_info("Using HTVECINTC interrupt mode\n"); + ret = htvec_acpi_init(liointc_domain, acpi_htintc); + if (ret) { + printk("HTVECintc domain init error!\n"); + return -1; + } + pch_pic_parse_madt((union acpi_subtable_headers *)acpi_pchpic[0], 0); + pch_msi_parse_madt((union acpi_subtable_headers *)acpi_pchmsi[0], 0); + } + + pic_domain = get_pchpic_irq_domain(); + if (pic_domain) + pch_lpc_acpi_init(pic_domain, acpi_pchlpc); + + return 0; +} + +/* + * Manage initrd + */ +#ifdef CONFIG_BLK_DEV_INITRD +static __init int rd_start_early(char *p) +{ + phys_initrd_start = __pa(memparse(p, NULL)); + + return 0; +} +early_param("rd_start", rd_start_early); + +static __init int rd_size_early(char *p) +{ + phys_initrd_size = memparse(p, NULL); + + return 0; +} +early_param("rd_size", rd_size_early); + +#endif + +__init void fw_init_cmdline(unsigned long argc, unsigned long cmdp) +{ + int i; + char **_fw_argv; + + _fw_argv = (char **)cmdp; + + arcs_cmdline[0] = '\0'; + for (i = 1; i < argc; i++) { + strlcat(arcs_cmdline, _fw_argv[i], COMMAND_LINE_SIZE); + if (i < (argc - 1)) + strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE); + } + strscpy(boot_command_line, arcs_cmdline, COMMAND_LINE_SIZE); +} + +static u8 ext_listhdr_checksum(u8 *buffer, u32 length) +{ + u8 sum = 0; + u8 *end = buffer + length; + + while (buffer < end) { + sum = (u8)(sum + *(buffer++)); + } + + return (sum); +} + +static int parse_mem(struct _extention_list_hdr *head) +{ + g_mmap = (struct loongsonlist_mem_map *)head; + if (ext_listhdr_checksum((u8 *)g_mmap, head->length)) { + printk("mem checksum error\n"); + return -EPERM; + } + return 0; +} + +/* legacy firmware passed, add use this info if need vbios */ +static int parse_vbios(struct _extention_list_hdr *head) +{ + struct loongsonlist_vbios *pvbios; + pvbios = (struct loongsonlist_vbios *)head; + + if (ext_listhdr_checksum((u8 *)pvbios, head->length)) { + printk("vbios_addr checksum error\n"); + return -EPERM; + } + return 0; +} + +/* legacy firmware passed, add use this info if need screeninfo KVM? */ +static int parse_screeninfo(struct _extention_list_hdr *head) +{ + struct loongsonlist_screeninfo *pscreeninfo; + + pscreeninfo = (struct loongsonlist_screeninfo *)head; + if (ext_listhdr_checksum((u8 *)pscreeninfo, head->length)) { + printk("screeninfo_addr checksum error\n"); + return -EPERM; + } + + memcpy(&screen_info, &pscreeninfo->si, sizeof(screen_info)); + return 0; +} + +static int list_find(struct boot_params *bp) +{ + struct _extention_list_hdr *fhead = NULL; + unsigned long index; + + fhead = bp->extlist; + if (!fhead) { + printk("the bp ext struct empty!\n"); + return -1; + } + do { + if (memcmp(&(fhead->signature), LOONGSON_MEM_SIGNATURE, 3) == 0) { + if (parse_mem(fhead) != 0) { + printk("parse mem failed\n"); + return -EPERM; + } + } else if (memcmp(&(fhead->signature), LOONGSON_VBIOS_SIGNATURE, 5) == 0) { + if (parse_vbios(fhead) != 0) { + printk("parse vbios failed\n"); + return -EPERM; + } + } else if (memcmp(&(fhead->signature), LOONGSON_SCREENINFO_SIGNATURE, 5) == 0) { + if (parse_screeninfo(fhead) != 0) { + printk("parse screeninfo failed\n"); + return -EPERM; + } + } + fhead = (struct _extention_list_hdr *)fhead->next; + index = (unsigned long)fhead; + } while (index); + return 0; +} + +unsigned int bpi_init(void) +{ + return list_find(efi_bp); +} + +static int get_bpi_version(u64 *signature) +{ + u8 data[9]; + int version = BPI_VERSION_NONE; + data[8] = 0; + memcpy(data, signature, sizeof(*signature)); + if (kstrtoint(&data[3], 10, &version)) + return BPI_VERSION_NONE; + return version; +} + +static void __init parse_bpi_flags(void) +{ + if (efi_bp->flags & BPI_FLAGS_UEFI_SUPPORTED) { + set_bit(EFI_BOOT, &efi.flags); + } else { + clear_bit(EFI_BOOT, &efi.flags); + } +} + +__init unsigned long legacy_boot_init(unsigned long argc, unsigned long cmdptr, unsigned long bpi) +{ + int ret; + + if (!bpi || argc < 2) + return -1; + efi_bp = (struct boot_params *)bpi; + bpi_version = get_bpi_version(&efi_bp->signature); + pr_info("BPI%d with boot flags %llx.\n", bpi_version, efi_bp->flags); + if (bpi_version == BPI_VERSION_NONE) + panic("Fatal error, bpi ver BONE!\n"); + else if (bpi_version == BPI_VERSION_V2) + parse_bpi_flags(); + + fw_init_cmdline(argc, cmdptr); + ret = bpi_init(); + if (ret) { + pr_err("init legacy firmware error!\n"); + return -1; + } + + return 0; +} + +static int __init add_legacy_isa_io(struct fwnode_handle *fwnode, unsigned long isa_base) +{ + int ret = 0; + unsigned long vaddr; + struct logic_pio_hwaddr *range; + + range = kzalloc(sizeof(*range), GFP_ATOMIC); + if (!range) + return -ENOMEM; + + range->fwnode = fwnode; + range->size = ISA_IOSIZE; + range->hw_start = isa_base; + range->flags = LOGIC_PIO_CPU_MMIO; + + ret = logic_pio_register_range(range); + if (ret) { + kfree(range); + return ret; + } + + if (range->io_start != 0) { + logic_pio_unregister_range(range); + kfree(range); + return -EINVAL; + } + + vaddr = (unsigned long)(PCI_IOBASE + range->io_start); + ret = ioremap_page_range(vaddr, vaddr + range->size, range->hw_start, pgprot_device(PAGE_KERNEL)); + return ret; +} + +static struct fwnode_handle * __init parse_isa_base(u64 *cpu_addr) +{ + struct device_node *np; + const __be32 *ranges = NULL; + int len; + struct device_node *node; + + for_each_node_by_name(np, "isa") { + node = of_node_get(np); + + if (!node) + break; + + ranges = of_get_property(node, "ranges", &len); + + if (!ranges || (ranges && len > 0)) + break; + } + if (ranges) { + ranges += 2; + *cpu_addr = of_translate_address(np, ranges); + return &np->fwnode; + } + + return NULL; +} + +static int __init register_legacy_isa_io(void) +{ + struct fwnode_handle *fwnode; + u64 cpu_addr; + + if (!acpi_disabled) { + cpu_addr = ISA_PHY_IOBASE; + fwnode = kzalloc(sizeof(*fwnode), GFP_ATOMIC); + } else { + fwnode = parse_isa_base(&cpu_addr); + } + + if (fwnode) + add_legacy_isa_io(fwnode, cpu_addr); + + return 0; +} +arch_initcall(register_legacy_isa_io); diff --git a/arch/loongarch/kernel/legacy_boot.h b/arch/loongarch/kernel/legacy_boot.h new file mode 100644 index 000000000000..1d6b42a26460 --- /dev/null +++ b/arch/loongarch/kernel/legacy_boot.h @@ -0,0 +1,90 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LEGACY_BOOT_H_ +#define __LEGACY_BOOT_H_ +#include <linux/screen_info.h> +#include <linux/of_address.h> +#define ADDRESS_TYPE_SYSRAM 1 +#define ADDRESS_TYPE_RESERVED 2 +#define ADDRESS_TYPE_ACPI 3 +#define ADDRESS_TYPE_NVS 4 +#define ADDRESS_TYPE_PMEM 5 + +#define LOONGSON3_BOOT_MEM_MAP_MAX 128 +#define RT_MAP_START 100 +#define FIX_MAP_ENTRY 32 + +/* mask of the flags in bootparamsinterface */ +#define BPI_FLAGS_UEFI_SUPPORTED BIT(0) +#define BPI_FLAGS_SOC_CPU BIT(1) + +#define LOONGSON_DMA_MASK_BIT 64 +#define LOONGSON_MEM_SIGNATURE "MEM" +#define LOONGSON_VBIOS_SIGNATURE "VBIOS" +#define LOONGSON_EFIBOOT_SIGNATURE "BPI" +#define LOONGSON_SCREENINFO_SIGNATURE "SINFO" +#define LOONGSON_EFIBOOT_VERSION 1000 + +/* Values for Version firmware */ + +enum bpi_vers { + BPI_VERSION_NONE = 0, + BPI_VERSION_V1 = 1000, + BPI_VERSION_V2 = 1001, +}; + +struct boot_params { + u64 signature; /* {"BPIXXXXX"} */ + void *systemtable; + struct _extention_list_hdr *extlist; + u64 flags; +} __attribute__((packed)); + +struct _extention_list_hdr { + u64 signature; + u32 length; + u8 revision; + u8 checksum; + struct _extention_list_hdr *next; +} __attribute__((packed)); + +struct loongsonlist_mem_map { + struct _extention_list_hdr header; /*{"M", "E", "M"}*/ + u8 map_count; + struct _loongson_mem_map { + u32 mem_type; + u64 mem_start; + u64 mem_size; + } __attribute__((packed))map[LOONGSON3_BOOT_MEM_MAP_MAX]; +} __attribute__((packed)); + +struct loongsonlist_vbios { + struct _extention_list_hdr header; /* {VBIOS} */ + u64 vbios_addr; +} __attribute__((packed)); + +struct loongsonlist_screeninfo{ + struct _extention_list_hdr header; + struct screen_info si; +}; +unsigned long legacy_boot_init(unsigned long argc, + unsigned long cmdptr, unsigned long bpi); +extern int bpi_version; +extern struct boot_params *efi_bp; +extern struct loongsonlist_mem_map *g_mmap; +extern int set_processor_mask(u32 id, u32 flags); +extern int __init setup_legacy_IRQ(void); +extern struct loongson_system_configuration loongson_sysconf; +extern unsigned long long smp_group[MAX_PACKAGES]; +extern int legacy_madt_table_init(void); +extern struct pch_pic *pch_pic_priv[MAX_IO_PICS]; +extern struct irq_domain *get_cpudomain(void); +extern int __init cpuintc_acpi_init(union acpi_subtable_headers *header, + const unsigned long end); +extern int __init +pch_pic_parse_madt(union acpi_subtable_headers *header, + const unsigned long end); +extern int __init +pch_msi_parse_madt(union acpi_subtable_headers *header, + const unsigned long end); +extern struct irq_domain *get_pchpic_irq_domain(void); +#endif diff --git a/arch/loongarch/kernel/mem.c b/arch/loongarch/kernel/mem.c index 4a4107a6a965..617e6fef3502 100644 --- a/arch/loongarch/kernel/mem.c +++ b/arch/loongarch/kernel/mem.c @@ -9,13 +9,35 @@ #include <asm/bootinfo.h> #include <asm/loongson.h> #include <asm/sections.h> - +#include "legacy_boot.h" void __init memblock_init(void) { - u32 mem_type; + u32 i, mem_type; u64 mem_start, mem_end, mem_size; efi_memory_desc_t *md; + if (g_mmap) { + /* parse memory information */ + for (i = 0; i < g_mmap->map_count; i++) { + mem_type = g_mmap->map[i].mem_type; + mem_start = g_mmap->map[i].mem_start; + mem_size = g_mmap->map[i].mem_size; + mem_end = mem_start + mem_size; + + switch (mem_type) { + case ADDRESS_TYPE_SYSRAM: + pr_info("add memory region memblock - base: 0x%llx size: 0x%llx\n", mem_start, mem_size); + memblock_add(mem_start, mem_size); + if (max_low_pfn < (mem_end >> PAGE_SHIFT)) + max_low_pfn = mem_end >> PAGE_SHIFT; + break; + } + } + memblock_set_current_limit(PFN_PHYS(max_low_pfn));
+ memblock_reserve(__pa_symbol(&_text), + __pa_symbol(&_end) - __pa_symbol(&_text)); + return; + } /* Parse memory information */ for_each_efi_memory_desc(md) { mem_type = md->type; diff --git a/arch/loongarch/kernel/numa.c b/arch/loongarch/kernel/numa.c index 708665895b47..8a3cc40ce2c0 100644 --- a/arch/loongarch/kernel/numa.c +++ b/arch/loongarch/kernel/numa.c @@ -25,6 +25,7 @@ #include <asm/pgalloc.h> #include <asm/sections.h> #include <asm/time.h> +#include "legacy_boot.h"
int numa_off; struct pglist_data *node_data[MAX_NUMNODES]; @@ -37,7 +38,6 @@ static struct numa_meminfo numa_meminfo; cpumask_t cpus_on_node[MAX_NUMNODES]; cpumask_t phys_cpus_on_node[MAX_NUMNODES]; EXPORT_SYMBOL(cpus_on_node); - /* * apicid, cpu, node mappings */ @@ -333,10 +333,45 @@ static void __init add_numamem_region(u64 start, u64 end, u32 type)
static void __init init_node_memblock(void) { - u32 mem_type; + u32 i, mem_type; u64 mem_end, mem_start, mem_size; efi_memory_desc_t *md;
+ if (g_mmap) { + for (i = 0; i < g_mmap->map_count; i++) { + mem_type = g_mmap->map[i].mem_type; + mem_start = g_mmap->map[i].mem_start; + mem_size = g_mmap->map[i].mem_size; + mem_end = g_mmap->map[i].mem_start + mem_size; + + switch (mem_type) { + case ADDRESS_TYPE_SYSRAM: + mem_start = PFN_ALIGN(mem_start); + mem_end = PFN_ALIGN(mem_end - PAGE_SIZE + 1); + if (mem_start >= mem_end) + break; + add_numamem_region(mem_start, mem_end, EFI_PERSISTENT_MEMORY); + break; + + case ADDRESS_TYPE_ACPI: + mem_start = PFN_ALIGN(mem_start - PAGE_SIZE + 1); + mem_end = PFN_ALIGN(mem_end); + mem_size = mem_end - mem_start; + memblock_add(mem_start, mem_size); + memblock_mark_nomap(mem_start, mem_size); + memblock_set_node(mem_start, mem_size, + &memblock.memory, 0); + memblock_reserve(mem_start, mem_size); + break; + + case ADDRESS_TYPE_RESERVED: + memblock_reserve(mem_start, mem_size); + break; + } + } + return; + } + /* Parse memory information and activate */ for_each_efi_memory_desc(md) { mem_type = md->type; diff --git a/arch/loongarch/kernel/reset.c b/arch/loongarch/kernel/reset.c index 1ef8c6383535..e7282e8de1cd 100644 --- a/arch/loongarch/kernel/reset.c +++ b/arch/loongarch/kernel/reset.c @@ -49,7 +49,8 @@ void machine_power_off(void) #endif do_kernel_power_off(); #ifdef CONFIG_EFI - efi.reset_system(EFI_RESET_SHUTDOWN, EFI_SUCCESS, 0, NULL); + if (efi.reset_system) + efi.reset_system(EFI_RESET_SHUTDOWN, EFI_SUCCESS, 0, NULL); #endif
while (true) { diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c index 4444b13418f0..0b7397f6afa6 100644 --- a/arch/loongarch/kernel/setup.c +++ b/arch/loongarch/kernel/setup.c @@ -48,6 +48,7 @@ #include <asm/sections.h> #include <asm/setup.h> #include <asm/time.h> +#include "legacy_boot.h"
#define SMBIOS_BIOSSIZE_OFFSET 0x09 #define SMBIOS_BIOSEXTERN_OFFSET 0x13 @@ -134,9 +135,22 @@ static void __init parse_cpu_table(const struct dmi_header *dm)
static void __init parse_bios_table(const struct dmi_header *dm) { + int bios_extern; char *dmi_data = (char *)dm;
+ bios_extern = *(dmi_data + SMBIOS_BIOSEXTERN_OFFSET); b_info.bios_size = (*(dmi_data + SMBIOS_BIOSSIZE_OFFSET) + 1) << 6; + + if (bpi_version == BPI_VERSION_V2) { + if ((!!(efi_bp->flags & BPI_FLAGS_UEFI_SUPPORTED)) != (!!(bios_extern & LOONGSON_EFI_ENABLE))) + pr_err("There is a conflict of definitions between efi_bp->flags and smbios\n"); + return ; + } + + if (bios_extern & LOONGSON_EFI_ENABLE) + set_bit(EFI_BOOT, &efi.flags); + else + clear_bit(EFI_BOOT, &efi.flags); }
static void __init find_tokens(const struct dmi_header *dm, void *dummy) @@ -598,7 +612,9 @@ void __init setup_arch(char **cmdline_p) pagetable_init(); bootcmdline_init(cmdline_p); parse_early_param(); - reserve_initrd_mem(); + /* The small fdt method should be skipped directly to avoid two reserved operations. */ + if (fw_arg2) + reserve_initrd_mem();
platform_init(); arch_mem_init(cmdline_p); diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c index 8ea1bbcf13a7..cd3e2df91e24 100644 --- a/arch/loongarch/kernel/smp.c +++ b/arch/loongarch/kernel/smp.c @@ -31,6 +31,7 @@ #include <asm/processor.h> #include <asm/setup.h> #include <asm/time.h> +#include "legacy_boot.h"
int __cpu_number_map[NR_CPUS]; /* Map physical to logical */ EXPORT_SYMBOL(__cpu_number_map); @@ -242,11 +243,12 @@ void __init loongson_prepare_cpus(unsigned int max_cpus) */ void loongson_boot_secondary(int cpu, struct task_struct *idle) { - unsigned long entry; + unsigned long entry = (unsigned long)&smpboot_entry;
pr_info("Booting CPU#%d...\n", cpu);
- entry = __pa_symbol((unsigned long)&smpboot_entry); + if (!efi_bp) + entry = __pa_symbol((unsigned long)&smpboot_entry); cpuboot_data.stack = (unsigned long)__KSTK_TOS(idle); cpuboot_data.thread_info = (unsigned long)task_thread_info(idle);
diff --git a/arch/loongarch/pci/acpi.c b/arch/loongarch/pci/acpi.c index 365f7de771cb..4d36179fdef0 100644 --- a/arch/loongarch/pci/acpi.c +++ b/arch/loongarch/pci/acpi.c @@ -58,13 +58,158 @@ static void acpi_release_root_info(struct acpi_pci_root_info *ci) kfree(info); }
+static void arch_pci_root_validate_resources(struct device *dev, + struct list_head *resources, + unsigned long type) +{ + LIST_HEAD(list); + struct resource *res1, *res2, *root = NULL; + struct resource_entry *tmp, *entry, *entry2; + + BUG_ON((type & (IORESOURCE_MEM | IORESOURCE_IO)) == 0); + root = (type & IORESOURCE_MEM) ? &iomem_resource : &ioport_resource; + + list_splice_init(resources, &list); + resource_list_for_each_entry_safe(entry, tmp, &list) { + bool free = false; + resource_size_t end; + + res1 = entry->res; + if (!(res1->flags & type)) + goto next; + + /* Exclude non-addressable range or non-addressable portion */ + end = min(res1->end, root->end); + if (end <= res1->start) { + dev_info(dev, "host bridge window %pR (ignored, not CPU addressable)\n", + res1); + free = true; + goto next; + } else if (res1->end != end) { + dev_info(dev, "host bridge window %pR ([%#llx-%#llx] ignored, not CPU addressable)\n", + res1, (unsigned long long)end + 1, + (unsigned long long)res1->end); + res1->end = end; + } + + resource_list_for_each_entry(entry2, resources) { + res2 = entry2->res; + if (!(res2->flags & type)) + continue; + + /* + * I don't like throwing away windows because then + * our resources no longer match the ACPI _CRS, but + * the kernel resource tree doesn't allow overlaps. + */ + if (resource_overlaps(res1, res2)) { + res2->start = min(res1->start, res2->start); + res2->end = max(res1->end, res2->end); + dev_info(dev, "host bridge window expanded to %pR; %pR ignored\n", + res2, res1); + free = true; + goto next; + } + } + +next: + resource_list_del(entry); + if (free) + resource_list_free_entry(entry); + else + resource_list_add_tail(entry, resources); + } +} +static void arch_pci_root_remap_iospace(struct fwnode_handle *fwnode, + struct resource_entry *entry) +{ + struct resource *res = entry->res; + resource_size_t cpu_addr = res->start; + resource_size_t pci_addr = cpu_addr - entry->offset; + resource_size_t length = resource_size(res); + unsigned long port; + if (pci_register_io_range(fwnode, cpu_addr, length)) { + res->start += ISA_IOSIZE; + cpu_addr = res->start; + pci_addr = cpu_addr - entry->offset; + length = resource_size(res); + if (pci_register_io_range(fwnode, cpu_addr, length)) + goto err; + } + + port = pci_address_to_pio(cpu_addr); + if (port == (unsigned long)-1) + goto err; + + res->start = port; + res->end = port + length - 1; + entry->offset = port - pci_addr; + + if (pci_remap_iospace(res, cpu_addr) < 0) + goto err; + + pr_info("Remapped I/O %pa to %pR\n", &cpu_addr, res); + return; +err: + res->flags |= IORESOURCE_DISABLED; +} + +static int arch_pci_probe_root_resources(struct acpi_pci_root_info *info) +{ + int ret; + struct list_head *list = &info->resources; + struct acpi_device *device = info->bridge; + struct resource_entry *entry, *tmp; + unsigned long flags; + struct resource *res; + + flags = IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT; + ret = acpi_dev_get_resources(device, list, + acpi_dev_filter_resource_type_cb, + (void *)flags); + if (ret < 0) + dev_warn(&device->dev, + "failed to parse _CRS method, error code %d\n", ret); + else if (ret == 0) + dev_dbg(&device->dev, + "no IO and memory resources present in _CRS\n"); + else { + resource_list_for_each_entry_safe(entry, tmp, list) { + if (entry->res->flags & IORESOURCE_IO) { + res = entry->res; + res->start = PFN_ALIGN(res->start); + res->end += 1; + res->end = PFN_ALIGN(res->end); + res->end -= 1; + if (!entry->offset) { + entry->offset = LOONGSON_LIO_BASE; + res->start |= LOONGSON_LIO_BASE; + res->end |= LOONGSON_LIO_BASE; + } + arch_pci_root_remap_iospace(&device->fwnode, + entry); + } + if (entry->res->flags & IORESOURCE_DISABLED) + resource_list_destroy_entry(entry); + else + entry->res->name = info->name; + } + arch_pci_root_validate_resources(&device->dev, list, + IORESOURCE_MEM); + arch_pci_root_validate_resources(&device->dev, list, + IORESOURCE_IO); + } + + return ret; +} + static int acpi_prepare_root_resources(struct acpi_pci_root_info *ci) { int status; struct resource_entry *entry, *tmp; struct acpi_device *device = ci->bridge;
- status = acpi_pci_probe_root_resources(ci); + status = arch_pci_probe_root_resources(ci); if (status > 0) { resource_list_for_each_entry_safe(entry, tmp, &ci->resources) { if (entry->res->flags & IORESOURCE_MEM) { diff --git a/drivers/firmware/efi/Makefile b/drivers/firmware/efi/Makefile index b51f2a4c821e..e89ec4e4992d 100644 --- a/drivers/firmware/efi/Makefile +++ b/drivers/firmware/efi/Makefile @@ -37,6 +37,7 @@ obj-$(CONFIG_ARM) += $(arm-obj-y) obj-$(CONFIG_ARM64) += $(arm-obj-y) riscv-obj-$(CONFIG_EFI) := efi-init.o riscv-runtime.o obj-$(CONFIG_RISCV) += $(riscv-obj-y) +#obj-$(CONFIG_LOONGARCH) += efi-init.o obj-$(CONFIG_EFI_CAPSULE_LOADER) += capsule-loader.o obj-$(CONFIG_EFI_EARLYCON) += earlycon.o obj-$(CONFIG_UEFI_CPER_ARM) += cper-arm.o diff --git a/drivers/irqchip/irq-loongarch-cpu.c b/drivers/irqchip/irq-loongarch-cpu.c index 9d8f2c406043..e174963dc7b9 100644 --- a/drivers/irqchip/irq-loongarch-cpu.c +++ b/drivers/irqchip/irq-loongarch-cpu.c @@ -141,7 +141,12 @@ static int __init acpi_cascade_irqdomain_init(void) return 0; }
-static int __init cpuintc_acpi_init(union acpi_subtable_headers *header, +struct irq_domain *get_cpudomain(void) +{ + return irq_domain; +} + +int __init cpuintc_acpi_init(union acpi_subtable_headers *header, const unsigned long end) { int ret; diff --git a/drivers/irqchip/irq-loongson-eiointc.c b/drivers/irqchip/irq-loongson-eiointc.c index 71ef19f77a5a..4bda50674d0d 100644 --- a/drivers/irqchip/irq-loongson-eiointc.c +++ b/drivers/irqchip/irq-loongson-eiointc.c @@ -327,7 +327,7 @@ static struct syscore_ops eiointc_syscore_ops = { .resume = eiointc_resume, };
-static int __init pch_pic_parse_madt(union acpi_subtable_headers *header, +int __init pch_pic_parse_madt(union acpi_subtable_headers *header, const unsigned long end) { struct acpi_madt_bio_pic *pchpic_entry = (struct acpi_madt_bio_pic *)header; @@ -340,7 +340,7 @@ static int __init pch_pic_parse_madt(union acpi_subtable_headers *header, return 0; }
-static int __init pch_msi_parse_madt(union acpi_subtable_headers *header, +int __init pch_msi_parse_madt(union acpi_subtable_headers *header, const unsigned long end) { struct irq_domain *parent; diff --git a/drivers/irqchip/irq-loongson-pch-pic.c b/drivers/irqchip/irq-loongson-pch-pic.c index e5fe4d50be05..01de22bb4f0c 100644 --- a/drivers/irqchip/irq-loongson-pch-pic.c +++ b/drivers/irqchip/irq-loongson-pch-pic.c @@ -52,6 +52,11 @@ static struct pch_pic *pch_pic_priv[MAX_IO_PICS];
struct fwnode_handle *pch_pic_handle[MAX_IO_PICS];
+struct irq_domain *get_pchpic_irq_domain(void) +{ + return pch_pic_priv[0]->pic_domain; +} + static void pch_pic_bitset(struct pch_pic *priv, int offset, int bit) { u32 reg;