diff options
Diffstat (limited to 'grub-core/kern/mips/loongson/init.c')
| -rw-r--r-- | grub-core/kern/mips/loongson/init.c | 320 |
1 files changed, 320 insertions, 0 deletions
diff --git a/grub-core/kern/mips/loongson/init.c b/grub-core/kern/mips/loongson/init.c new file mode 100644 index 0000000..7b96531 --- /dev/null +++ b/grub-core/kern/mips/loongson/init.c @@ -0,0 +1,320 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2009,2010 Free Software Foundation, Inc. + * + * GRUB 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 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/kernel.h> +#include <grub/misc.h> +#include <grub/env.h> +#include <grub/time.h> +#include <grub/types.h> +#include <grub/misc.h> +#include <grub/mm.h> +#include <grub/machine/time.h> +#include <grub/machine/kernel.h> +#include <grub/machine/memory.h> +#include <grub/memory.h> +#include <grub/mips/loongson.h> +#include <grub/cs5536.h> +#include <grub/term.h> +#include <grub/cpu/memory.h> +#include <grub/i18n.h> +#include <grub/video.h> +#include <grub/terminfo.h> +#include <grub/keyboard_layouts.h> +#include <grub/serial.h> +#include <grub/loader.h> +#include <grub/at_keyboard.h> + +grub_err_t +grub_machine_mmap_iterate (grub_memory_hook_t hook, void *hook_data) +{ + hook (GRUB_ARCH_LOWMEMPSTART, grub_arch_memsize << 20, + GRUB_MEMORY_AVAILABLE, hook_data); + hook (GRUB_ARCH_HIGHMEMPSTART, grub_arch_highmemsize << 20, + GRUB_MEMORY_AVAILABLE, hook_data); + return GRUB_ERR_NONE; +} + +/* Helper for init_pci. */ +static int +set_card (grub_pci_device_t dev, grub_pci_id_t pciid, + void *data __attribute__ ((unused))) +{ + grub_pci_address_t addr; + /* We could use grub_pci_assign_addresses for this but we prefer to + have exactly same memory map as on pmon. */ + switch (pciid) + { + case GRUB_LOONGSON_OHCI_PCIID: + addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0); + grub_pci_write (addr, 0x5025000); + addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND); + grub_pci_write_word (addr, GRUB_PCI_COMMAND_SERR_ENABLE + | GRUB_PCI_COMMAND_PARITY_ERROR + | GRUB_PCI_COMMAND_BUS_MASTER + | GRUB_PCI_COMMAND_MEM_ENABLED); + + addr = grub_pci_make_address (dev, GRUB_PCI_REG_STATUS); + grub_pci_write_word (addr, 0x0200 | GRUB_PCI_STATUS_CAPABILITIES); + break; + case GRUB_LOONGSON_EHCI_PCIID: + addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0); + grub_pci_write (addr, 0x5026000); + addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND); + grub_pci_write_word (addr, GRUB_PCI_COMMAND_SERR_ENABLE + | GRUB_PCI_COMMAND_PARITY_ERROR + | GRUB_PCI_COMMAND_BUS_MASTER + | GRUB_PCI_COMMAND_MEM_ENABLED); + + addr = grub_pci_make_address (dev, GRUB_PCI_REG_STATUS); + grub_pci_write_word (addr, (1 << GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT) + | GRUB_PCI_STATUS_CAPABILITIES); + break; + } + return 0; +} + +static void +init_pci (void) +{ + *((volatile grub_uint32_t *) GRUB_CPU_LOONGSON_PCI_HIT1_SEL_LO) = 0x8000000c; + *((volatile grub_uint32_t *) GRUB_CPU_LOONGSON_PCI_HIT1_SEL_HI) = 0xffffffff; + + /* Setup PCI controller. */ + *((volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER + + GRUB_PCI_REG_COMMAND)) + = GRUB_PCI_COMMAND_PARITY_ERROR | GRUB_PCI_COMMAND_BUS_MASTER + | GRUB_PCI_COMMAND_MEM_ENABLED; + *((volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER + + GRUB_PCI_REG_STATUS)) + = (1 << GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT) + | GRUB_PCI_STATUS_FAST_B2B_CAPABLE | GRUB_PCI_STATUS_66MHZ_CAPABLE + | GRUB_PCI_STATUS_CAPABILITIES; + + *((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER + + GRUB_PCI_REG_CACHELINE)) = 0xff; + *((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER + + GRUB_PCI_REG_ADDRESS_REG0)) + = 0x80000000 | GRUB_PCI_ADDR_MEM_TYPE_64 | GRUB_PCI_ADDR_MEM_PREFETCH; + *((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER + + GRUB_PCI_REG_ADDRESS_REG1)) = 0; + + grub_pci_iterate (set_card, NULL); +} + +void +grub_machine_init (void) +{ + grub_addr_t modend; + grub_uint32_t prid; + + asm volatile ("mfc0 %0, " GRUB_CPU_LOONGSON_COP0_PRID : "=r" (prid)); + + switch (prid) + { + /* Loongson 2E. */ + case 0x6302: + grub_arch_machine = GRUB_ARCH_MACHINE_FULOONG2E; + grub_bonito_type = GRUB_BONITO_2F; + break; + /* Loongson 2F. */ + case 0x6303: + if (grub_arch_machine != GRUB_ARCH_MACHINE_FULOONG2F + && grub_arch_machine != GRUB_ARCH_MACHINE_YEELOONG) + grub_arch_machine = GRUB_ARCH_MACHINE_YEELOONG; + grub_bonito_type = GRUB_BONITO_2F; + break; + /* Loongson 3A. */ + case 0x6305: + grub_arch_machine = GRUB_ARCH_MACHINE_YEELOONG_3A; + grub_bonito_type = GRUB_BONITO_3A; + break; + } + + /* FIXME: measure this. */ + if (grub_arch_busclock == 0) + { + grub_arch_busclock = 66000000; + grub_arch_cpuclock = 797000000; + } + + grub_install_get_time_ms (grub_rtc_get_time_ms); + + if (grub_arch_memsize == 0) + { + grub_port_t smbbase; + grub_err_t err; + grub_pci_device_t dev; + struct grub_smbus_spd spd; + unsigned totalmem; + int i; + + if (!grub_cs5536_find (&dev)) + grub_fatal ("No CS5536 found\n"); + + err = grub_cs5536_init_smbus (dev, 0x7ff, &smbbase); + if (err) + grub_fatal ("Couldn't init SMBus: %s\n", grub_errmsg); + + /* Yeeloong and Fuloong have only one memory slot. */ + err = grub_cs5536_read_spd (smbbase, GRUB_SMB_RAM_START_ADDR, &spd); + if (err) + grub_fatal ("Couldn't read SPD: %s\n", grub_errmsg); + for (i = 5; i < 13; i++) + if (spd.ddr2.rank_capacity & (1 << (i & 7))) + break; + /* Something is wrong. */ + if (i == 13) + totalmem = 256; + else + totalmem = ((spd.ddr2.num_of_ranks + & GRUB_SMBUS_SPD_MEMORY_NUM_OF_RANKS_MASK) + 1) << (i + 2); + + if (totalmem >= 256) + { + grub_arch_memsize = 256; + grub_arch_highmemsize = totalmem - 256; + } + else + { + grub_arch_memsize = totalmem; + grub_arch_highmemsize = 0; + } + + grub_cs5536_init_geode (dev); + + init_pci (); + } + + modend = grub_modules_get_end (); + grub_mm_init_region ((void *) modend, (grub_arch_memsize << 20) + - (modend - GRUB_ARCH_LOWMEMVSTART)); + /* FIXME: use upper memory as well. */ + + /* Initialize output terminal (can't be done earlier, as gfxterm + relies on a working heap. */ + grub_video_sm712_init (); + grub_video_sis315pro_init (); + grub_video_radeon_fuloong2e_init (); + grub_video_radeon_yeeloong3a_init (); + grub_font_init (); + grub_gfxterm_init (); + + grub_keylayouts_init (); + if (grub_arch_machine == GRUB_ARCH_MACHINE_YEELOONG + || grub_arch_machine == GRUB_ARCH_MACHINE_YEELOONG_3A) + grub_at_keyboard_init (); + + grub_terminfo_init (); + grub_serial_init (); + + grub_boot_init (); +} + +void +grub_machine_fini (int flags __attribute__ ((unused))) +{ +} + +static int +halt_via (grub_pci_device_t dev, grub_pci_id_t pciid, + void *data __attribute__ ((unused))) +{ + grub_uint16_t pm; + grub_pci_address_t addr; + + if (pciid != 0x30571106) + return 0; + + addr = grub_pci_make_address (dev, 0x40); + pm = grub_pci_read (addr) & ~1; + + if (pm == 0) + { + grub_pci_write (addr, 0x1801); + pm = 0x1800; + } + + addr = grub_pci_make_address (dev, 0x80); + grub_pci_write_byte (addr, 0xff); + + addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND); + grub_pci_write_word (addr, grub_pci_read_word (addr) | GRUB_PCI_COMMAND_IO_ENABLED); + + /* FIXME: This one is derived from qemu. Check on real hardware. */ + grub_outw (0x2000, pm + 4 + GRUB_MACHINE_PCI_IO_BASE); + grub_millisleep (5000); + + return 0; +} + +void +grub_halt (void) +{ + switch (grub_arch_machine) + { + case GRUB_ARCH_MACHINE_FULOONG2E: + grub_pci_iterate (halt_via, NULL); + break; + case GRUB_ARCH_MACHINE_FULOONG2F: + { + grub_pci_device_t dev; + grub_port_t p; + if (grub_cs5536_find (&dev)) + { + p = (grub_cs5536_read_msr (dev, GRUB_CS5536_MSR_GPIO_BAR) + & GRUB_CS5536_LBAR_ADDR_MASK) + GRUB_MACHINE_PCI_IO_BASE; + grub_outl ((1 << 13), p + 4); + grub_outl ((1 << 29), p); + grub_millisleep (5000); + } + } + break; + case GRUB_ARCH_MACHINE_YEELOONG: + grub_outb (grub_inb (GRUB_CPU_LOONGSON_GPIOCFG) + & ~GRUB_CPU_YEELOONG_SHUTDOWN_GPIO, GRUB_CPU_LOONGSON_GPIOCFG); + grub_millisleep (1500); + break; + case GRUB_ARCH_MACHINE_YEELOONG_3A: + grub_millisleep (1); + grub_outb (0x4e, GRUB_MACHINE_PCI_IO_BASE_3A | 0x66); + grub_millisleep (1); + grub_outb (2, GRUB_MACHINE_PCI_IO_BASE_3A | 0x62); + grub_millisleep (5000); + break; + } + + grub_puts_ (N_("Shutdown failed")); + grub_refresh (); + while (1); +} + +void +grub_exit (void) +{ + grub_halt (); +} + +void +grub_machine_get_bootlocation (char **device __attribute__ ((unused)), + char **path __attribute__ ((unused))) +{ +} + +extern char _end[]; +grub_addr_t grub_modbase = (grub_addr_t) _end; + |