MIPS: Loongson: Add UEFI-like firmware interface (LEFI) support
The new UEFI-like firmware interface (LEFI, i.e. Loongson Unified Firmware Interface) has 3 advantages: 1, Firmware export a physical memory map which is similar to X86's E820 map, so prom_init_memory() will be more elegant that #ifdef clauses can be removed. 2, Firmware export a pci irq routing table, we no longer need pci irq routing fixup in kernel's code. 3, Firmware has a built-in vga bios, and its address is exported, the linux kernel no longer need an embedded blob. With the LEFI interface, Loongson-3A/2G and all their successors can use a unified kernel. All Loongson-based machines support this new interface except 2E/2F series. Signed-off-by: Huacai Chen <chenhc@lemote.com> Signed-off-by: Hongliang Tao <taohl@lemote.com> Signed-off-by: Hua Yan <yanh@lemote.com> Tested-by: Alex Smith <alex.smith@imgtec.com> Reviewed-by: Alex Smith <alex.smith@imgtec.com> Cc: John Crispin <john@phrozen.org> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: linux-mips@linux-mips.org Cc: Fuxin Zhang <zhangfx@lemote.com> Cc: Zhangjin Wu <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/6632 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Huacai Chen
Ralf Baechle
parent
5f6d693ebb
commit
1a08f1524d
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@ -0,0 +1,163 @@
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#ifndef __ASM_MACH_LOONGSON_BOOT_PARAM_H_
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#define __ASM_MACH_LOONGSON_BOOT_PARAM_H_
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#define SYSTEM_RAM_LOW 1
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#define SYSTEM_RAM_HIGH 2
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#define MEM_RESERVED 3
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#define PCI_IO 4
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#define PCI_MEM 5
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#define LOONGSON_CFG_REG 6
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#define VIDEO_ROM 7
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#define ADAPTER_ROM 8
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#define ACPI_TABLE 9
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#define MAX_MEMORY_TYPE 10
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#define LOONGSON3_BOOT_MEM_MAP_MAX 128
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struct efi_memory_map_loongson {
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u16 vers; /* version of efi_memory_map */
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u32 nr_map; /* number of memory_maps */
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u32 mem_freq; /* memory frequence */
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struct mem_map {
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u32 node_id; /* node_id which memory attached to */
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u32 mem_type; /* system memory, pci memory, pci io, etc. */
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u64 mem_start; /* memory map start address */
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u32 mem_size; /* each memory_map size, not the total size */
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} map[LOONGSON3_BOOT_MEM_MAP_MAX];
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} __packed;
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enum loongson_cpu_type {
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Loongson_2E = 0,
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Loongson_2F = 1,
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Loongson_3A = 2,
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Loongson_3B = 3,
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Loongson_1A = 4,
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Loongson_1B = 5
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};
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/*
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* Capability and feature descriptor structure for MIPS CPU
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*/
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struct efi_cpuinfo_loongson {
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u16 vers; /* version of efi_cpuinfo_loongson */
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u32 processor_id; /* PRID, e.g. 6305, 6306 */
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u32 cputype; /* Loongson_3A/3B, etc. */
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u32 total_node; /* num of total numa nodes */
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u32 cpu_startup_core_id; /* Core id */
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u32 cpu_clock_freq; /* cpu_clock */
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u32 nr_cpus;
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} __packed;
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struct system_loongson {
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u16 vers; /* version of system_loongson */
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u32 ccnuma_smp; /* 0: no numa; 1: has numa */
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u32 sing_double_channel; /* 1:single; 2:double */
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} __packed;
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struct irq_source_routing_table {
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u16 vers;
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u16 size;
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u16 rtr_bus;
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u16 rtr_devfn;
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u32 vendor;
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u32 device;
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u32 PIC_type; /* conform use HT or PCI to route to CPU-PIC */
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u64 ht_int_bit; /* 3A: 1<<24; 3B: 1<<16 */
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u64 ht_enable; /* irqs used in this PIC */
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u32 node_id; /* node id: 0x0-0; 0x1-1; 0x10-2; 0x11-3 */
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u64 pci_mem_start_addr;
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u64 pci_mem_end_addr;
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u64 pci_io_start_addr;
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u64 pci_io_end_addr;
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u64 pci_config_addr;
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u32 dma_mask_bits;
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} __packed;
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struct interface_info {
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u16 vers; /* version of the specificition */
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u16 size;
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u8 flag;
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char description[64];
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} __packed;
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#define MAX_RESOURCE_NUMBER 128
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struct resource_loongson {
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u64 start; /* resource start address */
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u64 end; /* resource end address */
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char name[64];
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u32 flags;
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};
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struct archdev_data {}; /* arch specific additions */
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struct board_devices {
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char name[64]; /* hold the device name */
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u32 num_resources; /* number of device_resource */
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/* for each device's resource */
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struct resource_loongson resource[MAX_RESOURCE_NUMBER];
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/* arch specific additions */
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struct archdev_data archdata;
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};
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struct loongson_special_attribute {
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u16 vers; /* version of this special */
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char special_name[64]; /* special_atribute_name */
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u32 loongson_special_type; /* type of special device */
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/* for each device's resource */
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struct resource_loongson resource[MAX_RESOURCE_NUMBER];
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};
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struct loongson_params {
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u64 memory_offset; /* efi_memory_map_loongson struct offset */
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u64 cpu_offset; /* efi_cpuinfo_loongson struct offset */
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u64 system_offset; /* system_loongson struct offset */
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u64 irq_offset; /* irq_source_routing_table struct offset */
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u64 interface_offset; /* interface_info struct offset */
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u64 special_offset; /* loongson_special_attribute struct offset */
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u64 boarddev_table_offset; /* board_devices offset */
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};
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struct smbios_tables {
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u16 vers; /* version of smbios */
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u64 vga_bios; /* vga_bios address */
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struct loongson_params lp;
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};
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struct efi_reset_system_t {
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u64 ResetCold;
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u64 ResetWarm;
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u64 ResetType;
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u64 Shutdown;
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u64 DoSuspend; /* NULL if not support */
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};
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struct efi_loongson {
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u64 mps; /* MPS table */
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u64 acpi; /* ACPI table (IA64 ext 0.71) */
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u64 acpi20; /* ACPI table (ACPI 2.0) */
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struct smbios_tables smbios; /* SM BIOS table */
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u64 sal_systab; /* SAL system table */
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u64 boot_info; /* boot info table */
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};
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struct boot_params {
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struct efi_loongson efi;
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struct efi_reset_system_t reset_system;
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};
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struct loongson_system_configuration {
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u32 nr_cpus;
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enum loongson_cpu_type cputype;
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u64 ht_control_base;
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u64 pci_mem_start_addr;
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u64 pci_mem_end_addr;
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u64 pci_io_base;
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u64 restart_addr;
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u64 poweroff_addr;
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u64 suspend_addr;
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u64 vgabios_addr;
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u32 dma_mask_bits;
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};
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extern struct efi_memory_map_loongson *loongson_memmap;
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extern struct loongson_system_configuration loongson_sysconf;
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#endif
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@ -24,8 +24,8 @@ extern void mach_prepare_reboot(void);
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extern void mach_prepare_shutdown(void);
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/* environment arguments from bootloader */
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extern unsigned long cpu_clock_freq;
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extern unsigned long memsize, highmemsize;
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extern u32 cpu_clock_freq;
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extern u32 memsize, highmemsize;
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/* loongson-specific command line, env and memory initialization */
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extern void __init prom_init_memory(void);
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@ -18,29 +18,30 @@
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* option) any later version.
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*/
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#include <linux/module.h>
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#include <asm/bootinfo.h>
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#include <loongson.h>
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#include <boot_param.h>
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unsigned long cpu_clock_freq;
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u32 cpu_clock_freq;
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EXPORT_SYMBOL(cpu_clock_freq);
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unsigned long memsize, highmemsize;
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struct efi_memory_map_loongson *loongson_memmap;
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struct loongson_system_configuration loongson_sysconf;
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#define parse_even_earlier(res, option, p) \
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do { \
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unsigned int tmp __maybe_unused; \
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\
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if (strncmp(option, (char *)p, strlen(option)) == 0) \
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tmp = strict_strtol((char *)p + strlen(option"="), 10, &res); \
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tmp = kstrtou32((char *)p + strlen(option"="), 10, &res); \
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} while (0)
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void __init prom_init_env(void)
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{
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/* pmon passes arguments in 32bit pointers */
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int *_prom_envp;
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unsigned long bus_clock;
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unsigned int processor_id;
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#ifndef CONFIG_LEFI_FIRMWARE_INTERFACE
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int *_prom_envp;
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long l;
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/* firmware arguments are initialized in head.S */
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@ -48,7 +49,6 @@ void __init prom_init_env(void)
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l = (long)*_prom_envp;
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while (l != 0) {
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parse_even_earlier(bus_clock, "busclock", l);
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parse_even_earlier(cpu_clock_freq, "cpuclock", l);
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parse_even_earlier(memsize, "memsize", l);
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parse_even_earlier(highmemsize, "highmemsize", l);
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@ -57,8 +57,48 @@ void __init prom_init_env(void)
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}
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if (memsize == 0)
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memsize = 256;
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if (bus_clock == 0)
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bus_clock = 66000000;
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pr_info("memsize=%u, highmemsize=%u\n", memsize, highmemsize);
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#else
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struct boot_params *boot_p;
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struct loongson_params *loongson_p;
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struct efi_cpuinfo_loongson *ecpu;
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struct irq_source_routing_table *eirq_source;
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/* firmware arguments are initialized in head.S */
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boot_p = (struct boot_params *)fw_arg2;
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loongson_p = &(boot_p->efi.smbios.lp);
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ecpu = (struct efi_cpuinfo_loongson *)
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((u64)loongson_p + loongson_p->cpu_offset);
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eirq_source = (struct irq_source_routing_table *)
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((u64)loongson_p + loongson_p->irq_offset);
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loongson_memmap = (struct efi_memory_map_loongson *)
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((u64)loongson_p + loongson_p->memory_offset);
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cpu_clock_freq = ecpu->cpu_clock_freq;
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loongson_sysconf.cputype = ecpu->cputype;
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loongson_sysconf.nr_cpus = ecpu->nr_cpus;
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if (ecpu->nr_cpus > NR_CPUS || ecpu->nr_cpus == 0)
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loongson_sysconf.nr_cpus = NR_CPUS;
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loongson_sysconf.pci_mem_start_addr = eirq_source->pci_mem_start_addr;
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loongson_sysconf.pci_mem_end_addr = eirq_source->pci_mem_end_addr;
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loongson_sysconf.pci_io_base = eirq_source->pci_io_start_addr;
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loongson_sysconf.dma_mask_bits = eirq_source->dma_mask_bits;
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if (loongson_sysconf.dma_mask_bits < 32 ||
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loongson_sysconf.dma_mask_bits > 64)
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loongson_sysconf.dma_mask_bits = 32;
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loongson_sysconf.restart_addr = boot_p->reset_system.ResetWarm;
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loongson_sysconf.poweroff_addr = boot_p->reset_system.Shutdown;
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loongson_sysconf.suspend_addr = boot_p->reset_system.DoSuspend;
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loongson_sysconf.ht_control_base = 0x90000EFDFB000000;
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loongson_sysconf.vgabios_addr = boot_p->efi.smbios.vga_bios;
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pr_debug("Shutdown Addr: %llx, Restart Addr: %llx, VBIOS Addr: %llx\n",
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loongson_sysconf.poweroff_addr, loongson_sysconf.restart_addr,
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loongson_sysconf.vgabios_addr);
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#endif
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if (cpu_clock_freq == 0) {
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processor_id = (¤t_cpu_data)->processor_id;
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switch (processor_id & PRID_REV_MASK) {
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@ -68,12 +108,13 @@ void __init prom_init_env(void)
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case PRID_REV_LOONGSON2F:
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cpu_clock_freq = 797000000;
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break;
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case PRID_REV_LOONGSON3A:
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cpu_clock_freq = 900000000;
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break;
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default:
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cpu_clock_freq = 100000000;
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break;
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}
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}
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pr_info("busclock=%ld, cpuclock=%ld, memsize=%ld, highmemsize=%ld\n",
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bus_clock, cpu_clock_freq, memsize, highmemsize);
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pr_info("CpuClock = %u\n", cpu_clock_freq);
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}
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@ -17,10 +17,6 @@ unsigned long __maybe_unused _loongson_addrwincfg_base;
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void __init prom_init(void)
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{
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/* init base address of io space */
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set_io_port_base((unsigned long)
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ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE));
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#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
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_loongson_addrwincfg_base = (unsigned long)
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ioremap(LOONGSON_ADDRWINCFG_BASE, LOONGSON_ADDRWINCFG_SIZE);
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@ -28,6 +24,11 @@ void __init prom_init(void)
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prom_init_cmdline();
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prom_init_env();
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/* init base address of io space */
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set_io_port_base((unsigned long)
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ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE));
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prom_init_memory();
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/*init the uart base address */
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@ -11,9 +11,14 @@
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#include <asm/bootinfo.h>
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#include <loongson.h>
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#include <boot_param.h>
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#include <mem.h>
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#include <pci.h>
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#ifndef CONFIG_LEFI_FIRMWARE_INTERFACE
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u32 memsize, highmemsize;
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void __init prom_init_memory(void)
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{
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add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
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@ -49,6 +54,43 @@ void __init prom_init_memory(void)
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#endif /* !CONFIG_64BIT */
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}
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#else /* CONFIG_LEFI_FIRMWARE_INTERFACE */
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void __init prom_init_memory(void)
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{
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int i;
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u32 node_id;
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u32 mem_type;
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/* parse memory information */
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for (i = 0; i < loongson_memmap->nr_map; i++) {
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node_id = loongson_memmap->map[i].node_id;
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mem_type = loongson_memmap->map[i].mem_type;
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if (node_id == 0) {
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switch (mem_type) {
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case SYSTEM_RAM_LOW:
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add_memory_region(loongson_memmap->map[i].mem_start,
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(u64)loongson_memmap->map[i].mem_size << 20,
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BOOT_MEM_RAM);
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break;
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case SYSTEM_RAM_HIGH:
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add_memory_region(loongson_memmap->map[i].mem_start,
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(u64)loongson_memmap->map[i].mem_size << 20,
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BOOT_MEM_RAM);
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break;
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case MEM_RESERVED:
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add_memory_region(loongson_memmap->map[i].mem_start,
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(u64)loongson_memmap->map[i].mem_size << 20,
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BOOT_MEM_RESERVED);
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break;
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}
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}
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}
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}
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#endif /* CONFIG_LEFI_FIRMWARE_INTERFACE */
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/* override of arch/mips/mm/cache.c: __uncached_access */
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int __uncached_access(struct file *file, unsigned long addr)
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{
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@ -11,6 +11,7 @@
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#include <pci.h>
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#include <loongson.h>
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#include <boot_param.h>
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static struct resource loongson_pci_mem_resource = {
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.name = "pci memory space",
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@ -82,7 +83,10 @@ static int __init pcibios_init(void)
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setup_pcimap();
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loongson_pci_controller.io_map_base = mips_io_port_base;
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#ifdef CONFIG_LEFI_FIRMWARE_INTERFACE
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loongson_pci_mem_resource.start = loongson_sysconf.pci_mem_start_addr;
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loongson_pci_mem_resource.end = loongson_sysconf.pci_mem_end_addr;
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#endif
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register_pci_controller(&loongson_pci_controller);
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return 0;
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@ -16,6 +16,7 @@
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#include <asm/reboot.h>
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#include <loongson.h>
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#include <boot_param.h>
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static inline void loongson_reboot(void)
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{
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@ -37,17 +38,37 @@ static inline void loongson_reboot(void)
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static void loongson_restart(char *command)
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{
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#ifndef CONFIG_LEFI_FIRMWARE_INTERFACE
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/* do preparation for reboot */
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mach_prepare_reboot();
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/* reboot via jumping to boot base address */
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loongson_reboot();
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#else
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void (*fw_restart)(void) = (void *)loongson_sysconf.restart_addr;
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||||
|
||||
fw_restart();
|
||||
while (1) {
|
||||
if (cpu_wait)
|
||||
cpu_wait();
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
static void loongson_poweroff(void)
|
||||
{
|
||||
#ifndef CONFIG_LEFI_FIRMWARE_INTERFACE
|
||||
mach_prepare_shutdown();
|
||||
unreachable();
|
||||
#else
|
||||
void (*fw_poweroff)(void) = (void *)loongson_sysconf.poweroff_addr;
|
||||
|
||||
fw_poweroff();
|
||||
while (1) {
|
||||
if (cpu_wait)
|
||||
cpu_wait();
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
static void loongson_halt(void)
|
||||
|
|
|
|||
Loading…
Reference in New Issue