2
* GRUB -- GRand Unified Bootloader
3
* Copyright (C) 2009,2010 Free Software Foundation, Inc.
5
* GRUB is free software: you can redistribute it and/or modify
6
* it under the terms of the GNU General Public License as published by
7
* the Free Software Foundation, either version 3 of the License, or
8
* (at your option) any later version.
10
* GRUB is distributed in the hope that it will be useful,
11
* but WITHOUT ANY WARRANTY; without even the implied warranty of
12
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13
* GNU General Public License for more details.
15
* You should have received a copy of the GNU General Public License
16
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
19
#include <grub/kernel.h>
20
#include <grub/misc.h>
22
#include <grub/time.h>
23
#include <grub/types.h>
24
#include <grub/misc.h>
26
#include <grub/time.h>
27
#include <grub/machine/kernel.h>
28
#include <grub/machine/memory.h>
29
#include <grub/memory.h>
30
#include <grub/mips/loongson.h>
31
#include <grub/cs5536.h>
32
#include <grub/term.h>
33
#include <grub/machine/ec.h>
35
extern void grub_video_sm712_init (void);
36
extern void grub_video_init (void);
37
extern void grub_bitmap_init (void);
38
extern void grub_font_init (void);
39
extern void grub_gfxterm_init (void);
40
extern void grub_at_keyboard_init (void);
41
extern void grub_serial_init (void);
42
extern void grub_terminfo_init (void);
43
extern void grub_keylayouts_init (void);
45
/* FIXME: use interrupt to count high. */
49
static grub_uint32_t high = 0;
50
static grub_uint32_t last = 0;
53
asm volatile ("mfc0 %0, " GRUB_CPU_LOONGSON_COP0_TIMER_COUNT : "=r" (low));
58
return (((grub_uint64_t) high) << 32) | low;
62
grub_machine_mmap_iterate (grub_memory_hook_t hook)
64
hook (GRUB_ARCH_LOWMEMPSTART, grub_arch_memsize << 20,
65
GRUB_MEMORY_AVAILABLE);
66
hook (GRUB_ARCH_HIGHMEMPSTART, grub_arch_highmemsize << 20,
67
GRUB_MEMORY_AVAILABLE);
74
auto int NESTED_FUNC_ATTR set_card (grub_pci_device_t dev, grub_pci_id_t pciid);
75
int NESTED_FUNC_ATTR set_card (grub_pci_device_t dev, grub_pci_id_t pciid)
77
grub_pci_address_t addr;
78
/* FIXME: autoscan for BARs and devices. */
81
case GRUB_YEELOONG_OHCI_PCIID:
82
addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
83
grub_pci_write (addr, 0x5025000);
84
addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
85
grub_pci_write_word (addr, GRUB_PCI_COMMAND_SERR_ENABLE
86
| GRUB_PCI_COMMAND_PARITY_ERROR
87
| GRUB_PCI_COMMAND_BUS_MASTER
88
| GRUB_PCI_COMMAND_MEM_ENABLED);
90
addr = grub_pci_make_address (dev, GRUB_PCI_REG_STATUS);
91
grub_pci_write_word (addr, 0x0200 | GRUB_PCI_STATUS_CAPABILITIES);
93
case GRUB_YEELOONG_EHCI_PCIID:
94
addr = grub_pci_make_address (dev, GRUB_PCI_REG_ADDRESS_REG0);
95
grub_pci_write (addr, 0x5026000);
96
addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
97
grub_pci_write_word (addr, GRUB_PCI_COMMAND_SERR_ENABLE
98
| GRUB_PCI_COMMAND_PARITY_ERROR
99
| GRUB_PCI_COMMAND_BUS_MASTER
100
| GRUB_PCI_COMMAND_MEM_ENABLED);
102
addr = grub_pci_make_address (dev, GRUB_PCI_REG_STATUS);
103
grub_pci_write_word (addr, (1 << GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT)
104
| GRUB_PCI_STATUS_CAPABILITIES);
110
*((volatile grub_uint32_t *) GRUB_CPU_LOONGSON_PCI_HIT1_SEL_LO) = 0x8000000c;
111
*((volatile grub_uint32_t *) GRUB_CPU_LOONGSON_PCI_HIT1_SEL_HI) = 0xffffffff;
113
/* Setup PCI controller. */
114
*((volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
115
+ GRUB_PCI_REG_COMMAND))
116
= GRUB_PCI_COMMAND_PARITY_ERROR | GRUB_PCI_COMMAND_BUS_MASTER
117
| GRUB_PCI_COMMAND_MEM_ENABLED;
118
*((volatile grub_uint16_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
119
+ GRUB_PCI_REG_STATUS))
120
= (1 << GRUB_PCI_STATUS_DEVSEL_TIMING_SHIFT)
121
| GRUB_PCI_STATUS_FAST_B2B_CAPABLE | GRUB_PCI_STATUS_66MHZ_CAPABLE
122
| GRUB_PCI_STATUS_CAPABILITIES;
124
*((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
125
+ GRUB_PCI_REG_CACHELINE)) = 0xff;
126
*((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
127
+ GRUB_PCI_REG_ADDRESS_REG0))
128
= 0x80000000 | GRUB_PCI_ADDR_MEM_TYPE_64 | GRUB_PCI_ADDR_MEM_PREFETCH;
129
*((volatile grub_uint32_t *) (GRUB_MACHINE_PCI_CONTROLLER_HEADER
130
+ GRUB_PCI_REG_ADDRESS_REG1)) = 0;
132
grub_pci_iterate (set_card);
136
grub_machine_init (void)
140
/* FIXME: measure this. */
141
if (grub_arch_busclock == 0)
143
grub_arch_busclock = 66000000;
144
grub_arch_cpuclock = 797000000;
147
grub_install_get_time_ms (grub_rtc_get_time_ms);
149
if (grub_arch_memsize == 0)
153
grub_pci_device_t dev;
154
struct grub_smbus_spd spd;
158
if (!grub_cs5536_find (&dev))
159
grub_fatal ("No CS5536 found\n");
161
err = grub_cs5536_init_smbus (dev, 0x7ff, &smbbase);
163
grub_fatal ("Couldn't init SMBus: %s\n", grub_errmsg);
165
/* Yeeloong has only one memory slot. */
166
err = grub_cs5536_read_spd (smbbase, GRUB_SMB_RAM_START_ADDR, &spd);
168
grub_fatal ("Couldn't read SPD: %s\n", grub_errmsg);
169
for (i = 5; i < 13; i++)
170
if (spd.ddr2.rank_capacity & (1 << (i & 7)))
172
/* Something is wrong. */
176
totalmem = ((spd.ddr2.num_of_ranks
177
& GRUB_SMBUS_SPD_MEMORY_NUM_OF_RANKS_MASK) + 1) << (i + 2);
181
grub_arch_memsize = 256;
182
grub_arch_highmemsize = totalmem - 256;
186
grub_arch_memsize = (totalmem >> 20);
187
grub_arch_highmemsize = 0;
190
grub_cs5536_init_geode (dev);
195
modend = grub_modules_get_end ();
196
grub_mm_init_region ((void *) modend, (grub_arch_memsize << 20)
197
- (modend - GRUB_ARCH_LOWMEMVSTART));
198
/* FIXME: use upper memory as well. */
200
/* Initialize output terminal (can't be done earlier, as gfxterm
201
relies on a working heap. */
203
grub_video_sm712_init ();
206
grub_gfxterm_init ();
208
grub_keylayouts_init ();
209
grub_at_keyboard_init ();
211
grub_terminfo_init ();
216
grub_machine_fini (void)
223
grub_outb (grub_inb (GRUB_CPU_LOONGSON_GPIOCFG)
224
& ~GRUB_CPU_LOONGSON_SHUTDOWN_GPIO, GRUB_CPU_LOONGSON_GPIOCFG);
226
grub_printf ("Shutdown failed\n");
240
grub_write_ec (GRUB_MACHINE_EC_COMMAND_REBOOT);
242
grub_printf ("Reboot failed\n");