diff options
Diffstat (limited to 'arch/mips/loongson64/init.c')
-rw-r--r-- | arch/mips/loongson64/init.c | 197 |
1 files changed, 190 insertions, 7 deletions
diff --git a/arch/mips/loongson64/init.c b/arch/mips/loongson64/init.c index 5ac1a0f35ca4..a35dd7311795 100644 --- a/arch/mips/loongson64/init.c +++ b/arch/mips/loongson64/init.c @@ -4,7 +4,11 @@ * Author: Wu Zhangjin, wuzhangjin@gmail.com */ +#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> @@ -12,35 +16,214 @@ #include <asm/fw/fw.h> #include <loongson.h> +#include <boot_param.h> + +#define NODE_ID_OFFSET_ADDR ((void __iomem *)TO_UNCAC(0x1001041c)) + +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); + memcpy(base, except_vec_nmi, 0x80); flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); } +void ls7a_early_config(void) +{ + node_id_offset = ((readl(NODE_ID_OFFSET_ADDR) >> 8) & 0x1f) + 36; +} + +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((unsigned long) - ioremap(LOONGSON_PCIIO_BASE, LOONGSON_PCIIO_SIZE)); + set_io_port_base(PCI_IOBASE); + 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 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 -ENOMEM; + + range->fwnode = fwnode; + range->size = size = round_up(size, PAGE_SIZE); + range->hw_start = hw_start; + range->flags = LOGIC_PIO_CPU_MMIO; + + 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; + } + + vaddr = 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) { + reserve_pio_range(); + irqchip_init(); } |