diff options
Diffstat (limited to 'grub-core/kern/mips/yeeloong/init.c')
| -rw-r--r-- | grub-core/kern/mips/yeeloong/init.c | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/grub-core/kern/mips/yeeloong/init.c b/grub-core/kern/mips/yeeloong/init.c new file mode 100644 index 0000000..7a48d69 --- /dev/null +++ b/grub-core/kern/mips/yeeloong/init.c @@ -0,0 +1,253 @@ +/* + * 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/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/machine/ec.h> + +extern void grub_video_sm712_init (void); +extern void grub_video_init (void); +extern void grub_bitmap_init (void); +extern void grub_font_init (void); +extern void grub_gfxterm_init (void); +extern void grub_at_keyboard_init (void); +extern void grub_serial_init (void); +extern void grub_terminfo_init (void); +extern void grub_keylayouts_init (void); +extern void grub_boot_init (void); + +/* FIXME: use interrupt to count high. */ +grub_uint64_t +grub_get_rtc (void) +{ + static grub_uint32_t high = 0; + static grub_uint32_t last = 0; + grub_uint32_t low; + + asm volatile ("mfc0 %0, " GRUB_CPU_LOONGSON_COP0_TIMER_COUNT : "=r" (low)); + if (low < last) + high++; + last = low; + + return (((grub_uint64_t) high) << 32) | low; +} + +grub_err_t +grub_machine_mmap_iterate (grub_memory_hook_t hook) +{ + hook (GRUB_ARCH_LOWMEMPSTART, grub_arch_memsize << 20, + GRUB_MEMORY_AVAILABLE); + hook (GRUB_ARCH_HIGHMEMPSTART, grub_arch_highmemsize << 20, + GRUB_MEMORY_AVAILABLE); + return GRUB_ERR_NONE; +} + +static void +init_pci (void) +{ + auto int NESTED_FUNC_ATTR set_card (grub_pci_device_t dev, grub_pci_id_t pciid); + int NESTED_FUNC_ATTR set_card (grub_pci_device_t dev, grub_pci_id_t pciid) + { + grub_pci_address_t addr; + /* FIXME: autoscan for BARs and devices. */ + switch (pciid) + { + case GRUB_YEELOONG_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_YEELOONG_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; + } + + *((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); +} + +void +grub_machine_init (void) +{ + grub_addr_t modend; + + /* 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 has 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 >> 20); + 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_init (); + grub_video_sm712_init (); + grub_bitmap_init (); + grub_font_init (); + grub_gfxterm_init (); + + grub_keylayouts_init (); + grub_at_keyboard_init (); + + grub_terminfo_init (); + grub_serial_init (); + + grub_boot_init (); +} + +void +grub_machine_fini (void) +{ +} + +void +grub_halt (void) +{ + grub_outb (grub_inb (GRUB_CPU_LOONGSON_GPIOCFG) + & ~GRUB_CPU_LOONGSON_SHUTDOWN_GPIO, GRUB_CPU_LOONGSON_GPIOCFG); + + grub_millisleep (1500); + + grub_printf ("Shutdown failed\n"); + grub_refresh (); + while (1); +} + +void +grub_exit (void) +{ + grub_halt (); +} + +void +grub_reboot (void) +{ + grub_write_ec (GRUB_MACHINE_EC_COMMAND_REBOOT); + + grub_millisleep (1500); + + grub_printf ("Reboot failed\n"); + grub_refresh (); + while (1); +} + |