diff options
Diffstat (limited to 'arch/mips/loongson64/init.c')
| -rw-r--r-- | arch/mips/loongson64/init.c | 190 |
1 files changed, 156 insertions, 34 deletions
diff --git a/arch/mips/loongson64/init.c b/arch/mips/loongson64/init.c index 59ddadace83f..b9f90f33fc9a 100644 --- a/arch/mips/loongson64/init.c +++ b/arch/mips/loongson64/init.c @@ -7,6 +7,8 @@ #include <linux/irqchip.h> #include <linux/logic_pio.h> #include <linux/memblock.h> +#include <linux/of.h> +#include <linux/of_address.h> #include <asm/bootinfo.h> #include <asm/traps.h> #include <asm/smp-ops.h> @@ -23,7 +25,6 @@ u32 node_id_offset; static void __init mips_nmi_setup(void) { void *base; - extern char except_vec_nmi[]; base = (void *)(CAC_BASE + 0x380); memcpy(base, except_vec_nmi, 0x80); @@ -40,64 +41,185 @@ void rs780e_early_config(void) node_id_offset = 37; } +void virtual_early_config(void) +{ + node_id_offset = 44; +} + +void __init szmem(unsigned int node) +{ + u32 i, mem_type; + phys_addr_t node_id, mem_start, mem_size; + + /* Otherwise come from DTB */ + if (loongson_sysconf.fw_interface != LOONGSON_LEFI) + return; + + /* Parse memory information and activate */ + for (i = 0; i < loongson_memmap->nr_map; i++) { + node_id = loongson_memmap->map[i].node_id; + if (node_id != node) + continue; + + mem_type = loongson_memmap->map[i].mem_type; + mem_size = loongson_memmap->map[i].mem_size; + + /* Memory size comes in MB if MEM_SIZE_IS_IN_BYTES not set */ + if (mem_size & MEM_SIZE_IS_IN_BYTES) + mem_size &= ~MEM_SIZE_IS_IN_BYTES; + else + mem_size = mem_size << 20; + + mem_start = (node_id << 44) | loongson_memmap->map[i].mem_start; + + switch (mem_type) { + case SYSTEM_RAM_LOW: + case SYSTEM_RAM_HIGH: + case UMA_VIDEO_RAM: + pr_info("Node %d, mem_type:%d\t[%pa], %pa bytes usable\n", + (u32)node_id, mem_type, &mem_start, &mem_size); + memblock_add_node(mem_start, mem_size, node, + MEMBLOCK_NONE); + break; + case SYSTEM_RAM_RESERVED: + case VIDEO_ROM: + case ADAPTER_ROM: + case ACPI_TABLE: + case SMBIOS_TABLE: + pr_info("Node %d, mem_type:%d\t[%pa], %pa bytes reserved\n", + (u32)node_id, mem_type, &mem_start, &mem_size); + memblock_reserve(mem_start, mem_size); + break; + /* We should not reserve VUMA_VIDEO_RAM as it overlaps with MMIO */ + case VUMA_VIDEO_RAM: + default: + pr_info("Node %d, mem_type:%d\t[%pa], %pa bytes unhandled\n", + (u32)node_id, mem_type, &mem_start, &mem_size); + break; + } + } + + /* Reserve vgabios if it comes from firmware */ + if (loongson_sysconf.vgabios_addr) + memblock_reserve(virt_to_phys((void *)loongson_sysconf.vgabios_addr), + SZ_256K); + /* set nid for reserved memory */ + memblock_set_node((u64)node << 44, (u64)(node + 1) << 44, + &memblock.reserved, node); +} + +#ifndef CONFIG_NUMA +static void __init prom_init_memory(void) +{ + szmem(0); +} +#endif + void __init prom_init(void) { fw_init_cmdline(); - prom_init_env(); + + if (fw_arg2 == 0 || (fdt_magic(fw_arg2) == FDT_MAGIC)) { + loongson_sysconf.fw_interface = LOONGSON_DTB; + prom_dtb_init_env(); + } else { + loongson_sysconf.fw_interface = LOONGSON_LEFI; + prom_lefi_init_env(); + } /* init base address of io space */ - set_io_port_base(PCI_IOBASE); + set_io_port_base((unsigned long)PCI_IOBASE); - loongson_sysconf.early_config(); + if (loongson_sysconf.early_config) + loongson_sysconf.early_config(); +#ifdef CONFIG_NUMA prom_init_numa_memory(); +#else + prom_init_memory(); +#endif /* Hardcode to CPU UART 0 */ - setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + 0x1e0), 0, 1024); + if ((read_c0_prid() & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64R) + setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE), 0, 1024); + else + setup_8250_early_printk_port(TO_UNCAC(LOONGSON_REG_BASE + 0x1e0), 0, 1024); register_smp_ops(&loongson3_smp_ops); board_nmi_handler_setup = mips_nmi_setup; } -void __init prom_free_prom_memory(void) -{ -} - -static __init void reserve_pio_range(void) +static int __init add_legacy_isa_io(struct fwnode_handle *fwnode, resource_size_t hw_start, + resource_size_t size) { + int ret = 0; struct logic_pio_hwaddr *range; + unsigned long vaddr; range = kzalloc(sizeof(*range), GFP_ATOMIC); if (!range) - return; + return -ENOMEM; - range->fwnode = &of_root->fwnode; - range->size = MMIO_LOWER_RESERVED; - range->hw_start = LOONGSON_PCIIO_BASE; + range->fwnode = fwnode; + range->size = size = round_up(size, PAGE_SIZE); + range->hw_start = hw_start; range->flags = LOGIC_PIO_CPU_MMIO; - if (logic_pio_register_range(range)) { - pr_err("Failed to reserve PIO range for legacy ISA\n"); - goto free_range; + ret = logic_pio_register_range(range); + if (ret) { + kfree(range); + return ret; + } + + /* Legacy ISA must placed at the start of PCI_IOBASE */ + if (range->io_start != 0) { + logic_pio_unregister_range(range); + kfree(range); + return -EINVAL; } - if (WARN(range->io_start != 0, - "Reserved PIO range does not start from 0\n")) - goto unregister; - - /* - * i8259 would access I/O space, so mapping must be done here. - * Please remove it when all drivers can be managed by logic_pio. - */ - ioremap_page_range(PCI_IOBASE, PCI_IOBASE + MMIO_LOWER_RESERVED, - LOONGSON_PCIIO_BASE, - pgprot_device(PAGE_KERNEL)); - - return; -unregister: - logic_pio_unregister_range(range); -free_range: - kfree(range); + vaddr = (unsigned long)PCI_IOBASE + range->io_start; + + vmap_page_range(vaddr, vaddr + size, hw_start, pgprot_device(PAGE_KERNEL)); + + return 0; +} + +static __init void reserve_pio_range(void) +{ + struct device_node *np; + + for_each_node_by_name(np, "isa") { + struct of_range range; + struct of_range_parser parser; + + pr_info("ISA Bridge: %pOF\n", np); + + if (of_range_parser_init(&parser, np)) { + pr_info("Failed to parse resources.\n"); + of_node_put(np); + break; + } + + for_each_of_range(&parser, &range) { + switch (range.flags & IORESOURCE_TYPE_BITS) { + case IORESOURCE_IO: + pr_info(" IO 0x%016llx..0x%016llx -> 0x%016llx\n", + range.cpu_addr, + range.cpu_addr + range.size - 1, + range.bus_addr); + if (add_legacy_isa_io(&np->fwnode, range.cpu_addr, range.size)) + pr_warn("Failed to reserve legacy IO in Logic PIO\n"); + break; + case IORESOURCE_MEM: + pr_info(" MEM 0x%016llx..0x%016llx -> 0x%016llx\n", + range.cpu_addr, + range.cpu_addr + range.size - 1, + range.bus_addr); + break; + } + } + } } void __init arch_init_irq(void) |