2 * arch/mips/ddb5476/setup.c -- NEC DDB Vrc-5476 setup routines
4 * Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
5 * Sony Software Development Center Europe (SDCE), Brussels
7 #include <linux/init.h>
8 #include <linux/kbd_ll.h>
9 #include <linux/kernel.h>
10 #include <linux/kdev_t.h>
11 #include <linux/types.h>
12 #include <linux/sched.h>
13 #include <linux/pci.h>
15 #include <asm/addrspace.h>
16 #include <asm/bcache.h>
18 #include <asm/reboot.h>
19 #include <asm/gdb-stub.h>
21 #include <asm/debug.h>
22 #include <asm/traps.h>
24 #include <asm/ddb5xxx/ddb5xxx.h>
26 // #define USE_CPU_COUNTER_TIMER /* whether we use cpu counter */
28 #ifdef USE_CPU_COUNTER_TIMER
30 #define CPU_COUNTER_FREQUENCY 83000000
32 /* otherwise we use general purpose timer */
33 #define TIMER_FREQUENCY 83000000
34 #define TIMER_BASE DDB_T2CTRL
35 #define TIMER_IRQ (VRC5476_IRQ_BASE + VRC5476_IRQ_GPT)
38 static void (*back_to_prom) (void) = (void (*)(void)) 0xbfc00000;
40 static void ddb_machine_restart(char *command)
45 t = ddb_in32(DDB_PCICTRL + 4);
47 ddb_out32(DDB_PCICTRL + 4, t);
49 t = ddb_in32(DDB_CPUSTAT);
51 ddb_out32(DDB_CPUSTAT, t);
56 static void ddb_machine_halt(void)
58 printk(KERN_NOTICE "DDB Vrc-5476 halted.\n");
62 static void ddb_machine_power_off(void)
64 printk(KERN_NOTICE "DDB Vrc-5476 halted. Please turn off the power.\n");
68 extern void rtc_ds1386_init(unsigned long base);
70 static void __init ddb_time_init(void)
72 #if defined(USE_CPU_COUNTER_TIMER)
73 mips_hpt_frequency = CPU_COUNTER_FREQUENCY;
76 /* we have ds1396 RTC chip */
77 rtc_ds1386_init(KSEG1ADDR(DDB_PCI_MEM_BASE));
81 extern int setup_irq(unsigned int irq, struct irqaction *irqaction);
82 static void __init ddb_timer_setup(struct irqaction *irq)
84 #if defined(USE_CPU_COUNTER_TIMER)
88 /* we are using the cpu counter for timer interrupts */
89 setup_irq(CPU_IRQ_BASE + 7, irq);
91 /* to generate the first timer interrupt */
92 count = read_c0_count();
93 write_c0_compare(count + 1000);
97 ddb_out32(TIMER_BASE, TIMER_FREQUENCY/HZ);
98 ddb_out32(TIMER_BASE+4, 0x1); /* enable timer */
99 setup_irq(TIMER_IRQ, irq);
104 struct resource dma1;
105 struct resource timer;
107 struct resource dma_page_reg;
108 struct resource dma2;
111 "dma1", 0x00, 0x1f, IORESOURCE_BUSY}, {
112 "timer", 0x40, 0x5f, IORESOURCE_BUSY}, {
113 "rtc", 0x70, 0x7f, IORESOURCE_BUSY}, {
114 "dma page reg", 0x80, 0x8f, IORESOURCE_BUSY}, {
115 "dma2", 0xc0, 0xdf, IORESOURCE_BUSY}
119 struct resource nile4;
121 { "Nile 4", DDB_BASE, DDB_BASE + DDB_SIZE - 1, IORESOURCE_BUSY}
125 static void ddb5476_board_init(void);
127 void __init plat_setup(void)
129 set_io_port_base(KSEG1ADDR(DDB_PCI_IO_BASE));
131 board_time_init = ddb_time_init;
132 board_timer_setup = ddb_timer_setup;
134 _machine_restart = ddb_machine_restart;
135 _machine_halt = ddb_machine_halt;
136 _machine_power_off = ddb_machine_power_off;
138 /* request io port/mem resources */
139 if (request_resource(&ioport_resource, &ddb5476_ioport.dma1) ||
140 request_resource(&ioport_resource, &ddb5476_ioport.timer) ||
141 request_resource(&ioport_resource, &ddb5476_ioport.rtc) ||
142 request_resource(&ioport_resource,
143 &ddb5476_ioport.dma_page_reg)
144 || request_resource(&ioport_resource, &ddb5476_ioport.dma2)
145 || request_resource(&iomem_resource, &ddb5476_iomem.nile4)) {
147 ("ddb_setup - requesting oo port resources failed.\n");
151 /* Reboot on panic */
154 /* [jsun] we need to set BAR0 so that SDRAM 0 appears at 0x0 in PCI */
155 /* *(long*)0xbfa00218 = 0x8; */
157 /* board initialization stuff */
158 ddb5476_board_init();
162 * We don't trust bios. We essentially does hardware re-initialization
163 * as complete as possible, as far as we know we can safely do.
165 static void ddb5476_board_init(void)
167 /* ----------- setup PDARs ------------ */
168 /* check SDRAM0, whether we are on MEM bus does not matter */
169 db_assert((ddb_in32(DDB_SDRAM0) & 0xffffffef) ==
170 ddb_calc_pdar(DDB_SDRAM_BASE, DDB_SDRAM_SIZE, 32, 0, 1));
172 /* SDRAM1 should be turned off. What is this for anyway ? */
173 db_assert( (ddb_in32(DDB_SDRAM1) & 0xf) == 0);
175 /* flash 1&2, DDB status, DDB control */
176 ddb_set_pdar(DDB_DCS2, DDB_DCS2_BASE, DDB_DCS2_SIZE, 16, 0, 0);
177 ddb_set_pdar(DDB_DCS3, DDB_DCS3_BASE, DDB_DCS3_SIZE, 16, 0, 0);
178 ddb_set_pdar(DDB_DCS4, DDB_DCS4_BASE, DDB_DCS4_SIZE, 8, 0, 0);
179 ddb_set_pdar(DDB_DCS5, DDB_DCS5_BASE, DDB_DCS5_SIZE, 8, 0, 0);
181 /* shut off other pdar so they don't accidentally get into the way */
182 ddb_set_pdar(DDB_DCS6, 0xffffffff, 0, 32, 0, 0);
183 ddb_set_pdar(DDB_DCS7, 0xffffffff, 0, 32, 0, 0);
184 ddb_set_pdar(DDB_DCS8, 0xffffffff, 0, 32, 0, 0);
186 /* verify VRC5477 base addr */
187 /* don't care about some details */
188 db_assert((ddb_in32(DDB_INTCS) & 0xffffff0f) ==
189 ddb_calc_pdar(DDB_INTCS_BASE, DDB_INTCS_SIZE, 8, 0, 0));
191 /* verify BOOT ROM addr */
192 /* don't care about some details */
193 db_assert((ddb_in32(DDB_BOOTCS) & 0xffffff0f) ==
194 ddb_calc_pdar(DDB_BOOTCS_BASE, DDB_BOOTCS_SIZE, 8, 0, 0));
196 /* setup PCI windows - window1 for MEM/config, window0 for IO */
197 ddb_set_pdar(DDB_PCIW0, DDB_PCI_IO_BASE, DDB_PCI_IO_SIZE, 32, 0, 1);
198 ddb_set_pmr(DDB_PCIINIT0, DDB_PCICMD_IO, 0, DDB_PCI_ACCESS_32);
200 ddb_set_pdar(DDB_PCIW1, DDB_PCI_MEM_BASE, DDB_PCI_MEM_SIZE, 32, 0, 1);
201 ddb_set_pmr(DDB_PCIINIT1, DDB_PCICMD_MEM, DDB_PCI_MEM_BASE, DDB_PCI_ACCESS_32);
203 /* ----------- setup PDARs ------------ */
204 /* this is problematic - it will reset Aladin which cause we loose
205 * serial port, and we don't know how to set up Aladin chip again.
207 // ddb_pci_reset_bus();
209 ddb_out32(DDB_BAR0, 0x00000008);
211 ddb_out32(DDB_BARC, 0xffffffff);
212 ddb_out32(DDB_BARB, 0xffffffff);
213 ddb_out32(DDB_BAR1, 0xffffffff);
214 ddb_out32(DDB_BAR2, 0xffffffff);
215 ddb_out32(DDB_BAR3, 0xffffffff);
216 ddb_out32(DDB_BAR4, 0xffffffff);
217 ddb_out32(DDB_BAR5, 0xffffffff);
218 ddb_out32(DDB_BAR6, 0xffffffff);
219 ddb_out32(DDB_BAR7, 0xffffffff);
220 ddb_out32(DDB_BAR8, 0xffffffff);
222 /* ----------- switch PCI1 to PCI CONFIG space ------------ */
223 ddb_set_pdar(DDB_PCIW1, DDB_PCI_CONFIG_BASE, DDB_PCI_CONFIG_SIZE, 32, 0, 1);
224 ddb_set_pmr(DDB_PCIINIT1, DDB_PCICMD_CFG, 0x0, DDB_PCI_ACCESS_32);
226 /* ----- M1543 PCI setup ------ */
228 /* we know M1543 PCI-ISA controller is at addr:18 */
229 /* xxxx1010 makes USB at addr:13 and PMU at addr:14 */
230 *(volatile unsigned char *) 0xa8040072 &= 0xf0;
231 *(volatile unsigned char *) 0xa8040072 |= 0xa;
233 /* setup USB interrupt to IRQ 9, (bit 0:3 - 0001)
234 * no IOCHRDY signal, (bit 7 - 1)
235 * M1543C & M7101 VID and Subsys Device ID are read-only (bit 6 - 1)
236 * Make USB Master INTAJ level to edge conversion (bit 4 - 1)
238 *(unsigned char *) 0xa8040074 = 0xd1;
240 /* setup PMU(SCI to IRQ 10 (bit 0:3 - 0011)
241 * SCI routing to IRQ 13 disabled (bit 7 - 1)
242 * SCI interrupt level to edge conversion bypassed (bit 4 - 0)
244 *(unsigned char *) 0xa8040076 = 0x83;
246 /* setup IDE controller
247 * enable IDE controller (bit 6 - 1)
248 * IDE IDSEL to be addr:24 (bit 4:5 - 11)
249 * no IDE ATA Secondary Bus Signal Pad Control (bit 3 - 0)
250 * no IDE ATA Primary Bus Signal Pad Control (bit 2 - 0)
251 * primary IRQ is 14, secondary is 15 (bit 1:0 - 01
253 // *(unsigned char*)0xa8040058 = 0x71;
254 // *(unsigned char*)0xa8040058 = 0x79;
255 // *(unsigned char*)0xa8040058 = 0x74; // use SIRQ, primary tri-state
256 *(unsigned char *) 0xa8040058 = 0x75; // primary tri-state
259 /* this is not necessary if M5229 does not use SIRQ */
260 *(unsigned char *) 0xa8040044 = 0x0d; // primary to IRQ 14
261 *(unsigned char *) 0xa8040075 = 0x0d; // secondary to IRQ 14
264 /* enable IDE in the M5229 config register 0x50 (bit 0 - 1) */
265 /* M5229 IDSEL is addr:24; see above setting */
266 *(unsigned char *) 0xa9000050 |= 0x1;
268 /* enable bus master (bit 2) and IO decoding (bit 0) */
269 *(unsigned char *) 0xa9000004 |= 0x5;
271 /* enable native, copied from arch/ppc/k2boot/head.S */
272 /* TODO - need volatile, need to be portable */
273 *(unsigned char *) 0xa9000009 = 0xff;
275 /* ----- end of M1543 PCI setup ------ */
277 /* ----- reset on-board ether chip ------ */
278 *((volatile u32 *) 0xa8020004) |= 1; /* decode I/O */
279 *((volatile u32 *) 0xa8020010) = 0; /* set BAR address */
281 /* send reset command */
282 *((volatile u32 *) 0xa6000000) = 1; /* do a soft reset */
284 /* disable ether chip */
285 *((volatile u32 *) 0xa8020004) = 0; /* disable any decoding */
287 /* put it into sleep */
288 *((volatile u32 *) 0xa8020040) = 0x80000000;
290 /* ----- end of reset on-board ether chip ------ */
292 /* ----------- switch PCI1 back to PCI MEM space ------------ */
293 ddb_set_pdar(DDB_PCIW1, DDB_PCI_MEM_BASE, DDB_PCI_MEM_SIZE, 32, 0, 1);
294 ddb_set_pmr(DDB_PCIINIT1, DDB_PCICMD_MEM, DDB_PCI_MEM_BASE, DDB_PCI_ACCESS_32);