Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Ocotea board specific routines |
3 | * | |
4 | * Matt Porter <mporter@kernel.crashing.org> | |
5 | * | |
6 | * Copyright 2003-2005 MontaVista Software Inc. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | */ | |
13 | ||
1da177e4 LT |
14 | #include <linux/stddef.h> |
15 | #include <linux/kernel.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/reboot.h> | |
19 | #include <linux/pci.h> | |
20 | #include <linux/kdev_t.h> | |
21 | #include <linux/types.h> | |
22 | #include <linux/major.h> | |
23 | #include <linux/blkdev.h> | |
24 | #include <linux/console.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/ide.h> | |
27 | #include <linux/initrd.h> | |
1da177e4 LT |
28 | #include <linux/seq_file.h> |
29 | #include <linux/root_dev.h> | |
30 | #include <linux/tty.h> | |
31 | #include <linux/serial.h> | |
32 | #include <linux/serial_core.h> | |
b187f180 | 33 | #include <linux/serial_8250.h> |
1da177e4 LT |
34 | |
35 | #include <asm/system.h> | |
36 | #include <asm/pgtable.h> | |
37 | #include <asm/page.h> | |
38 | #include <asm/dma.h> | |
39 | #include <asm/io.h> | |
40 | #include <asm/machdep.h> | |
41 | #include <asm/ocp.h> | |
42 | #include <asm/pci-bridge.h> | |
43 | #include <asm/time.h> | |
44 | #include <asm/todc.h> | |
45 | #include <asm/bootinfo.h> | |
46 | #include <asm/ppc4xx_pic.h> | |
47 | #include <asm/ppcboot.h> | |
5ce17b18 | 48 | #include <asm/tlbflush.h> |
1da177e4 LT |
49 | |
50 | #include <syslib/gen550.h> | |
51 | #include <syslib/ibm440gx_common.h> | |
52 | ||
d5f7b06b | 53 | extern bd_t __res; |
1da177e4 LT |
54 | |
55 | static struct ibm44x_clocks clocks __initdata; | |
56 | ||
57 | static void __init | |
58 | ocotea_calibrate_decr(void) | |
59 | { | |
60 | unsigned int freq; | |
61 | ||
62 | if (mfspr(SPRN_CCR1) & CCR1_TCS) | |
63 | freq = OCOTEA_TMR_CLK; | |
64 | else | |
65 | freq = clocks.cpu; | |
66 | ||
67 | ibm44x_calibrate_decr(freq); | |
68 | } | |
69 | ||
70 | static int | |
71 | ocotea_show_cpuinfo(struct seq_file *m) | |
72 | { | |
73 | seq_printf(m, "vendor\t\t: IBM\n"); | |
74 | seq_printf(m, "machine\t\t: PPC440GX EVB (Ocotea)\n"); | |
75 | ibm440gx_show_cpuinfo(m); | |
76 | return 0; | |
77 | } | |
78 | ||
79 | static inline int | |
80 | ocotea_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) | |
81 | { | |
82 | static char pci_irq_table[][4] = | |
83 | /* | |
84 | * PCI IDSEL/INTPIN->INTLINE | |
85 | * A B C D | |
86 | */ | |
87 | { | |
88 | { 23, 23, 23, 23 }, /* IDSEL 1 - PCI Slot 0 */ | |
89 | { 24, 24, 24, 24 }, /* IDSEL 2 - PCI Slot 1 */ | |
90 | { 25, 25, 25, 25 }, /* IDSEL 3 - PCI Slot 2 */ | |
91 | { 26, 26, 26, 26 }, /* IDSEL 4 - PCI Slot 3 */ | |
92 | }; | |
93 | ||
94 | const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4; | |
95 | return PCI_IRQ_TABLE_LOOKUP; | |
96 | } | |
97 | ||
98 | static void __init ocotea_set_emacdata(void) | |
99 | { | |
100 | struct ocp_def *def; | |
101 | struct ocp_func_emac_data *emacdata; | |
102 | int i; | |
103 | ||
104 | /* | |
105 | * Note: Current rev. board only operates in Group 4a | |
106 | * mode, so we always set EMAC0-1 for SMII and EMAC2-3 | |
107 | * for RGMII (though these could run in RTBI just the same). | |
108 | * | |
109 | * The FPGA reg 3 information isn't even suitable for | |
110 | * determining the phy_mode, so if the board becomes | |
111 | * usable in !4a, it will be necessary to parse an environment | |
112 | * variable from the firmware or similar to properly configure | |
113 | * the phy_map/phy_mode. | |
114 | */ | |
115 | /* Set phy_map, phy_mode, and mac_addr for each EMAC */ | |
116 | for (i=0; i<4; i++) { | |
117 | def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, i); | |
118 | emacdata = def->additions; | |
119 | if (i < 2) { | |
120 | emacdata->phy_map = 0x00000001; /* Skip 0x00 */ | |
121 | emacdata->phy_mode = PHY_MODE_SMII; | |
122 | } | |
123 | else { | |
124 | emacdata->phy_map = 0x0000ffff; /* Skip 0x00-0x0f */ | |
125 | emacdata->phy_mode = PHY_MODE_RGMII; | |
126 | } | |
127 | if (i == 0) | |
128 | memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6); | |
129 | else if (i == 1) | |
130 | memcpy(emacdata->mac_addr, __res.bi_enet1addr, 6); | |
131 | else if (i == 2) | |
132 | memcpy(emacdata->mac_addr, __res.bi_enet2addr, 6); | |
133 | else if (i == 3) | |
134 | memcpy(emacdata->mac_addr, __res.bi_enet3addr, 6); | |
135 | } | |
136 | } | |
137 | ||
138 | #define PCIX_READW(offset) \ | |
139 | (readw(pcix_reg_base+offset)) | |
140 | ||
141 | #define PCIX_WRITEW(value, offset) \ | |
142 | (writew(value, pcix_reg_base+offset)) | |
143 | ||
144 | #define PCIX_WRITEL(value, offset) \ | |
145 | (writel(value, pcix_reg_base+offset)) | |
146 | ||
147 | /* | |
148 | * FIXME: This is only here to "make it work". This will move | |
149 | * to a ibm_pcix.c which will contain a generic IBM PCIX bridge | |
150 | * configuration library. -Matt | |
151 | */ | |
152 | static void __init | |
153 | ocotea_setup_pcix(void) | |
154 | { | |
155 | void *pcix_reg_base; | |
156 | ||
157 | pcix_reg_base = ioremap64(PCIX0_REG_BASE, PCIX_REG_SIZE); | |
158 | ||
159 | /* Enable PCIX0 I/O, Mem, and Busmaster cycles */ | |
160 | PCIX_WRITEW(PCIX_READW(PCIX0_COMMAND) | PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER, PCIX0_COMMAND); | |
161 | ||
162 | /* Disable all windows */ | |
163 | PCIX_WRITEL(0, PCIX0_POM0SA); | |
164 | PCIX_WRITEL(0, PCIX0_POM1SA); | |
165 | PCIX_WRITEL(0, PCIX0_POM2SA); | |
166 | PCIX_WRITEL(0, PCIX0_PIM0SA); | |
167 | PCIX_WRITEL(0, PCIX0_PIM0SAH); | |
168 | PCIX_WRITEL(0, PCIX0_PIM1SA); | |
169 | PCIX_WRITEL(0, PCIX0_PIM2SA); | |
170 | PCIX_WRITEL(0, PCIX0_PIM2SAH); | |
171 | ||
172 | /* Setup 2GB PLB->PCI outbound mem window (3_8000_0000->0_8000_0000) */ | |
173 | PCIX_WRITEL(0x00000003, PCIX0_POM0LAH); | |
174 | PCIX_WRITEL(0x80000000, PCIX0_POM0LAL); | |
175 | PCIX_WRITEL(0x00000000, PCIX0_POM0PCIAH); | |
176 | PCIX_WRITEL(0x80000000, PCIX0_POM0PCIAL); | |
177 | PCIX_WRITEL(0x80000001, PCIX0_POM0SA); | |
178 | ||
179 | /* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */ | |
180 | PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH); | |
181 | PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL); | |
ec5f77e7 | 182 | PCIX_WRITEL(0x80000007, PCIX0_PIM0SA); |
1da177e4 LT |
183 | |
184 | eieio(); | |
185 | } | |
186 | ||
187 | static void __init | |
188 | ocotea_setup_hose(void) | |
189 | { | |
190 | struct pci_controller *hose; | |
191 | ||
192 | /* Configure windows on the PCI-X host bridge */ | |
193 | ocotea_setup_pcix(); | |
194 | ||
195 | hose = pcibios_alloc_controller(); | |
196 | ||
197 | if (!hose) | |
198 | return; | |
199 | ||
200 | hose->first_busno = 0; | |
201 | hose->last_busno = 0xff; | |
202 | ||
203 | hose->pci_mem_offset = OCOTEA_PCI_MEM_OFFSET; | |
204 | ||
205 | pci_init_resource(&hose->io_resource, | |
206 | OCOTEA_PCI_LOWER_IO, | |
207 | OCOTEA_PCI_UPPER_IO, | |
208 | IORESOURCE_IO, | |
209 | "PCI host bridge"); | |
210 | ||
211 | pci_init_resource(&hose->mem_resources[0], | |
212 | OCOTEA_PCI_LOWER_MEM, | |
213 | OCOTEA_PCI_UPPER_MEM, | |
214 | IORESOURCE_MEM, | |
215 | "PCI host bridge"); | |
216 | ||
217 | hose->io_space.start = OCOTEA_PCI_LOWER_IO; | |
218 | hose->io_space.end = OCOTEA_PCI_UPPER_IO; | |
219 | hose->mem_space.start = OCOTEA_PCI_LOWER_MEM; | |
220 | hose->mem_space.end = OCOTEA_PCI_UPPER_MEM; | |
92a11f9e AV |
221 | hose->io_base_virt = ioremap64(OCOTEA_PCI_IO_BASE, OCOTEA_PCI_IO_SIZE); |
222 | isa_io_base = (unsigned long) hose->io_base_virt; | |
1da177e4 LT |
223 | |
224 | setup_indirect_pci(hose, | |
225 | OCOTEA_PCI_CFGA_PLB32, | |
226 | OCOTEA_PCI_CFGD_PLB32); | |
227 | hose->set_cfg_type = 1; | |
228 | ||
229 | hose->last_busno = pciauto_bus_scan(hose, hose->first_busno); | |
230 | ||
231 | ppc_md.pci_swizzle = common_swizzle; | |
232 | ppc_md.pci_map_irq = ocotea_map_irq; | |
233 | } | |
234 | ||
235 | ||
236 | TODC_ALLOC(); | |
237 | ||
238 | static void __init | |
239 | ocotea_early_serial_map(void) | |
240 | { | |
241 | struct uart_port port; | |
242 | ||
243 | /* Setup ioremapped serial port access */ | |
244 | memset(&port, 0, sizeof(port)); | |
245 | port.membase = ioremap64(PPC440GX_UART0_ADDR, 8); | |
246 | port.irq = UART0_INT; | |
247 | port.uartclk = clocks.uart0; | |
248 | port.regshift = 0; | |
9b4a1617 | 249 | port.iotype = UPIO_MEM; |
59a675b2 | 250 | port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST; |
1da177e4 LT |
251 | port.line = 0; |
252 | ||
253 | if (early_serial_setup(&port) != 0) { | |
254 | printk("Early serial init of port 0 failed\n"); | |
255 | } | |
256 | ||
257 | #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB) | |
258 | /* Configure debug serial access */ | |
259 | gen550_init(0, &port); | |
5ce17b18 ES |
260 | |
261 | /* Purge TLB entry added in head_44x.S for early serial access */ | |
262 | _tlbie(UART0_IO_BASE); | |
1da177e4 LT |
263 | #endif |
264 | ||
265 | port.membase = ioremap64(PPC440GX_UART1_ADDR, 8); | |
266 | port.irq = UART1_INT; | |
267 | port.uartclk = clocks.uart1; | |
268 | port.line = 1; | |
269 | ||
270 | if (early_serial_setup(&port) != 0) { | |
271 | printk("Early serial init of port 1 failed\n"); | |
272 | } | |
273 | ||
274 | #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB) | |
275 | /* Configure debug serial access */ | |
276 | gen550_init(1, &port); | |
277 | #endif | |
278 | } | |
279 | ||
280 | static void __init | |
281 | ocotea_setup_arch(void) | |
282 | { | |
283 | ocotea_set_emacdata(); | |
284 | ||
285 | ibm440gx_tah_enable(); | |
286 | ||
d5f7b06b MP |
287 | /* |
288 | * Determine various clocks. | |
289 | * To be completely correct we should get SysClk | |
290 | * from FPGA, because it can be changed by on-board switches | |
291 | * --ebs | |
292 | */ | |
0fbbeba2 | 293 | ibm440gx_get_clocks(&clocks, 33300000, 6 * 1843200); |
d5f7b06b MP |
294 | ocp_sys_info.opb_bus_freq = clocks.opb; |
295 | ||
1da177e4 LT |
296 | /* Setup TODC access */ |
297 | TODC_INIT(TODC_TYPE_DS1743, | |
298 | 0, | |
299 | 0, | |
300 | ioremap64(OCOTEA_RTC_ADDR, OCOTEA_RTC_SIZE), | |
301 | 8); | |
302 | ||
303 | /* init to some ~sane value until calibrate_delay() runs */ | |
304 | loops_per_jiffy = 50000000/HZ; | |
305 | ||
306 | /* Setup PCI host bridge */ | |
307 | ocotea_setup_hose(); | |
308 | ||
309 | #ifdef CONFIG_BLK_DEV_INITRD | |
310 | if (initrd_start) | |
311 | ROOT_DEV = Root_RAM0; | |
312 | else | |
313 | #endif | |
314 | #ifdef CONFIG_ROOT_NFS | |
315 | ROOT_DEV = Root_NFS; | |
316 | #else | |
317 | ROOT_DEV = Root_HDA1; | |
318 | #endif | |
319 | ||
320 | ocotea_early_serial_map(); | |
321 | ||
322 | /* Identify the system */ | |
323 | printk("IBM Ocotea port (MontaVista Software, Inc. <source@mvista.com>)\n"); | |
324 | } | |
325 | ||
326 | static void __init ocotea_init(void) | |
327 | { | |
328 | ibm440gx_l2c_setup(&clocks); | |
329 | } | |
330 | ||
331 | void __init platform_init(unsigned long r3, unsigned long r4, | |
332 | unsigned long r5, unsigned long r6, unsigned long r7) | |
333 | { | |
30aacebe | 334 | ibm440gx_platform_init(r3, r4, r5, r6, r7); |
1da177e4 LT |
335 | |
336 | ppc_md.setup_arch = ocotea_setup_arch; | |
337 | ppc_md.show_cpuinfo = ocotea_show_cpuinfo; | |
338 | ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */ | |
339 | ||
340 | ppc_md.calibrate_decr = ocotea_calibrate_decr; | |
341 | ppc_md.time_init = todc_time_init; | |
342 | ppc_md.set_rtc_time = todc_set_rtc_time; | |
343 | ppc_md.get_rtc_time = todc_get_rtc_time; | |
344 | ||
345 | ppc_md.nvram_read_val = todc_direct_read_val; | |
346 | ppc_md.nvram_write_val = todc_direct_write_val; | |
347 | #ifdef CONFIG_KGDB | |
348 | ppc_md.early_serial_map = ocotea_early_serial_map; | |
349 | #endif | |
350 | ppc_md.init = ocotea_init; | |
351 | } |