245 lines
6.7 KiB
C
245 lines
6.7 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2009,2010 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/kernel.h>
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#include <grub/misc.h>
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#include <grub/env.h>
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#include <grub/time.h>
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#include <grub/types.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/time.h>
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#include <grub/machine/kernel.h>
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#include <grub/machine/memory.h>
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#include <grub/mips/loongson.h>
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#include <grub/cs5536.h>
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#include <grub/term.h>
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#include <grub/machine/ec.h>
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extern void grub_video_sm712_init (void);
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extern void grub_video_init (void);
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extern void grub_bitmap_init (void);
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extern void grub_font_init (void);
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extern void grub_gfxterm_init (void);
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extern void grub_at_keyboard_init (void);
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extern void grub_serial_init (void);
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extern void grub_terminfo_init (void);
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/* FIXME: use interrupt to count high. */
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grub_uint64_t
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grub_get_rtc (void)
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{
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static grub_uint32_t high = 0;
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static grub_uint32_t last = 0;
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grub_uint32_t low;
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asm volatile ("mfc0 %0, " GRUB_CPU_LOONGSON_COP0_TIMER_COUNT : "=r" (low));
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if (low < last)
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high++;
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last = low;
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return (((grub_uint64_t) high) << 32) | low;
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}
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grub_err_t
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grub_machine_mmap_iterate (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t,
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grub_uint64_t,
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grub_uint32_t))
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{
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hook (GRUB_ARCH_LOWMEMPSTART, grub_arch_memsize << 20,
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GRUB_MACHINE_MEMORY_AVAILABLE);
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hook (GRUB_ARCH_HIGHMEMPSTART, grub_arch_highmemsize << 20,
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GRUB_MACHINE_MEMORY_AVAILABLE);
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return GRUB_ERR_NONE;
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}
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static void
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init_pci (void)
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{
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auto int NESTED_FUNC_ATTR set_card (grub_pci_device_t dev, grub_pci_id_t pciid);
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int NESTED_FUNC_ATTR set_card (grub_pci_device_t dev, grub_pci_id_t pciid)
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{
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grub_pci_address_t addr;
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/* FIXME: autoscan for BARs and devices. */
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switch (pciid)
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{
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case GRUB_YEELOONG_OHCI_PCIID:
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addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
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grub_pci_write (addr, 0x5025000);
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addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
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grub_pci_write_word (addr, GRUB_PCI_COMMAND_SERR_ENABLE
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| GRUB_PCI_COMMAND_PARITY_ERROR
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| GRUB_PCI_COMMAND_BUS_MASTER
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| GRUB_PCI_COMMAND_MEM_ENABLED);
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addr = grub_pci_make_address (dev, GRUB_PCI_REG_STATUS);
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grub_pci_write_word (addr, 0x0200 | GRUB_PCI_STATUS_CAPABILITIES);
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break;
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case GRUB_YEELOONG_EHCI_PCIID:
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addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
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grub_pci_write (addr, 0x5026000);
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addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
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grub_pci_write_word (addr, GRUB_PCI_COMMAND_SERR_ENABLE
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| GRUB_PCI_COMMAND_PARITY_ERROR
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| GRUB_PCI_COMMAND_BUS_MASTER
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| GRUB_PCI_COMMAND_MEM_ENABLED);
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addr = grub_pci_make_address (dev, GRUB_PCI_REG_STATUS);
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grub_pci_write_word (addr, (1 << GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT)
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| GRUB_PCI_STATUS_CAPABILITIES);
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break;
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}
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return 0;
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}
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*((volatile grub_uint32_t *) GRUB_CPU_LOONGSON_PCI_HIT1_SEL_LO) = 0x8000000c;
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*((volatile grub_uint32_t *) GRUB_CPU_LOONGSON_PCI_HIT1_SEL_HI) = 0xffffffff;
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/* Setup PCI controller. */
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*((volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
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+ GRUB_PCI_REG_COMMAND))
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= GRUB_PCI_COMMAND_PARITY_ERROR | GRUB_PCI_COMMAND_BUS_MASTER
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| GRUB_PCI_COMMAND_MEM_ENABLED;
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*((volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
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+ GRUB_PCI_REG_STATUS))
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= (1 << GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT)
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| GRUB_PCI_STATUS_FAST_B2B_CAPABLE | GRUB_PCI_STATUS_66MHZ_CAPABLE
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| GRUB_PCI_STATUS_CAPABILITIES;
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*((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
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+ GRUB_PCI_REG_CACHELINE)) = 0xff;
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*((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
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+ GRUB_PCI_REG_ADDRESS_REG0))
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= 0x80000000 | GRUB_PCI_ADDR_MEM_TYPE_64 | GRUB_PCI_ADDR_MEM_PREFETCH;
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*((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
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+ GRUB_PCI_REG_ADDRESS_REG1)) = 0;
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grub_pci_iterate (set_card);
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}
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void
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grub_machine_init (void)
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{
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grub_addr_t modend;
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/* FIXME: measure this. */
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if (grub_arch_busclock == 0)
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{
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grub_arch_busclock = 66000000;
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grub_arch_cpuclock = 797000000;
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}
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grub_install_get_time_ms (grub_rtc_get_time_ms);
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if (grub_arch_memsize == 0)
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{
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grub_port_t smbbase;
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grub_err_t err;
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grub_pci_device_t dev;
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struct grub_smbus_spd spd;
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unsigned totalmem;
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int i;
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if (!grub_cs5536_find (&dev))
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grub_fatal ("No CS5536 found\n");
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err = grub_cs5536_init_smbus (dev, 0x7ff, &smbbase);
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if (err)
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grub_fatal ("Couldn't init SMBus: %s\n", grub_errmsg);
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/* Yeeloong has only one memory slot. */
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err = grub_cs5536_read_spd (smbbase, GRUB_SMB_RAM_START_ADDR, &spd);
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if (err)
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grub_fatal ("Couldn't read SPD: %s\n", grub_errmsg);
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for (i = 5; i < 13; i++)
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if (spd.ddr2.rank_capacity & (1 << (i & 7)))
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break;
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/* Something is wrong. */
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if (i == 13)
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totalmem = 256;
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else
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totalmem = ((spd.ddr2.num_of_ranks
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& GRUB_SMBUS_SPD_MEMORY_NUM_OF_RANKS_MASK) + 1) << (i + 2);
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if (totalmem >= 256)
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{
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grub_arch_memsize = 256;
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grub_arch_highmemsize = totalmem - 256;
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}
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else
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{
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grub_arch_memsize = (totalmem >> 20);
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grub_arch_highmemsize = 0;
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}
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grub_cs5536_init_geode (dev);
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init_pci ();
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}
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modend = grub_modules_get_end ();
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grub_mm_init_region ((void *) modend, (grub_arch_memsize << 20)
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- (modend - GRUB_ARCH_LOWMEMVSTART));
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/* FIXME: use upper memory as well. */
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/* Initialize output terminal (can't be done earlier, as gfxterm
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relies on a working heap. */
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grub_video_init ();
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grub_video_sm712_init ();
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grub_bitmap_init ();
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grub_font_init ();
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grub_gfxterm_init ();
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grub_at_keyboard_init ();
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grub_terminfo_init ();
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grub_serial_init ();
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}
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void
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grub_machine_fini (void)
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{
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}
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void
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grub_halt (void)
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{
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grub_outb (grub_inb (GRUB_CPU_LOONGSON_GPIOCFG)
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& ~GRUB_CPU_LOONGSON_SHUTDOWN_GPIO, GRUB_CPU_LOONGSON_GPIOCFG);
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grub_printf ("Shutdown failed\n");
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grub_refresh ();
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while (1);
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}
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void
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grub_exit (void)
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{
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grub_halt ();
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}
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void
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grub_reboot (void)
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{
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grub_write_ec (GRUB_MACHINE_EC_COMMAND_REBOOT);
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grub_printf ("Reboot failed\n");
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grub_refresh ();
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while (1);
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}
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