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/*
* 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;
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