Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Ebony board specific routines |
3 | * | |
4 | * Matt Porter <mporter@kernel.crashing.org> | |
5 | * Copyright 2002-2005 MontaVista Software Inc. | |
6 | * | |
7 | * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> | |
5ce17b18 | 8 | * Copyright (c) 2003-2005 Zultys Technologies |
1da177e4 LT |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | */ | |
15 | ||
1da177e4 LT |
16 | #include <linux/stddef.h> |
17 | #include <linux/kernel.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/reboot.h> | |
21 | #include <linux/pci.h> | |
22 | #include <linux/kdev_t.h> | |
23 | #include <linux/types.h> | |
24 | #include <linux/major.h> | |
25 | #include <linux/blkdev.h> | |
26 | #include <linux/console.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/ide.h> | |
29 | #include <linux/initrd.h> | |
1da177e4 LT |
30 | #include <linux/seq_file.h> |
31 | #include <linux/root_dev.h> | |
32 | #include <linux/tty.h> | |
33 | #include <linux/serial.h> | |
34 | #include <linux/serial_core.h> | |
b187f180 | 35 | #include <linux/serial_8250.h> |
1da177e4 LT |
36 | |
37 | #include <asm/system.h> | |
38 | #include <asm/pgtable.h> | |
39 | #include <asm/page.h> | |
40 | #include <asm/dma.h> | |
41 | #include <asm/io.h> | |
42 | #include <asm/machdep.h> | |
43 | #include <asm/ocp.h> | |
44 | #include <asm/pci-bridge.h> | |
45 | #include <asm/time.h> | |
46 | #include <asm/todc.h> | |
47 | #include <asm/bootinfo.h> | |
48 | #include <asm/ppc4xx_pic.h> | |
49 | #include <asm/ppcboot.h> | |
5ce17b18 | 50 | #include <asm/tlbflush.h> |
1da177e4 LT |
51 | |
52 | #include <syslib/gen550.h> | |
53 | #include <syslib/ibm440gp_common.h> | |
54 | ||
d5f7b06b | 55 | extern bd_t __res; |
1da177e4 LT |
56 | |
57 | static struct ibm44x_clocks clocks __initdata; | |
58 | ||
59 | /* | |
60 | * Ebony external IRQ triggering/polarity settings | |
61 | */ | |
62 | unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata = { | |
63 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ0: PCI slot 0 */ | |
64 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ1: PCI slot 1 */ | |
65 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ2: PCI slot 2 */ | |
66 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ3: PCI slot 3 */ | |
67 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ4: IRDA */ | |
68 | (IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE), /* IRQ5: SMI pushbutton */ | |
69 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ6: PHYs */ | |
70 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ7: AUX */ | |
71 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ8: EXT */ | |
72 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ9: EXT */ | |
73 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ10: EXT */ | |
74 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* IRQ11: EXT */ | |
75 | (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* IRQ12: EXT */ | |
76 | }; | |
77 | ||
78 | static void __init | |
79 | ebony_calibrate_decr(void) | |
80 | { | |
81 | unsigned int freq; | |
82 | ||
83 | /* | |
84 | * Determine system clock speed | |
85 | * | |
86 | * If we are on Rev. B silicon, then use | |
87 | * default external system clock. If we are | |
88 | * on Rev. C silicon then errata forces us to | |
89 | * use the internal clock. | |
90 | */ | |
400d2212 | 91 | if (strcmp(cur_cpu_spec->cpu_name, "440GP Rev. B") == 0) |
95409aac TR |
92 | freq = EBONY_440GP_RB_SYSCLK; |
93 | else | |
94 | freq = EBONY_440GP_RC_SYSCLK; | |
1da177e4 LT |
95 | |
96 | ibm44x_calibrate_decr(freq); | |
97 | } | |
98 | ||
99 | static int | |
100 | ebony_show_cpuinfo(struct seq_file *m) | |
101 | { | |
102 | seq_printf(m, "vendor\t\t: IBM\n"); | |
103 | seq_printf(m, "machine\t\t: Ebony\n"); | |
104 | ||
105 | return 0; | |
106 | } | |
107 | ||
108 | static inline int | |
109 | ebony_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) | |
110 | { | |
111 | static char pci_irq_table[][4] = | |
112 | /* | |
113 | * PCI IDSEL/INTPIN->INTLINE | |
114 | * A B C D | |
115 | */ | |
116 | { | |
117 | { 23, 23, 23, 23 }, /* IDSEL 1 - PCI Slot 0 */ | |
118 | { 24, 24, 24, 24 }, /* IDSEL 2 - PCI Slot 1 */ | |
119 | { 25, 25, 25, 25 }, /* IDSEL 3 - PCI Slot 2 */ | |
120 | { 26, 26, 26, 26 }, /* IDSEL 4 - PCI Slot 3 */ | |
121 | }; | |
122 | ||
123 | const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4; | |
124 | return PCI_IRQ_TABLE_LOOKUP; | |
125 | } | |
126 | ||
127 | #define PCIX_WRITEL(value, offset) \ | |
128 | (writel(value, pcix_reg_base + offset)) | |
129 | ||
130 | /* | |
131 | * FIXME: This is only here to "make it work". This will move | |
132 | * to a ibm_pcix.c which will contain a generic IBM PCIX bridge | |
133 | * configuration library. -Matt | |
134 | */ | |
135 | static void __init | |
136 | ebony_setup_pcix(void) | |
137 | { | |
ba724a37 | 138 | void __iomem *pcix_reg_base; |
1da177e4 LT |
139 | |
140 | pcix_reg_base = ioremap64(PCIX0_REG_BASE, PCIX_REG_SIZE); | |
141 | ||
142 | /* Disable all windows */ | |
143 | PCIX_WRITEL(0, PCIX0_POM0SA); | |
144 | PCIX_WRITEL(0, PCIX0_POM1SA); | |
145 | PCIX_WRITEL(0, PCIX0_POM2SA); | |
146 | PCIX_WRITEL(0, PCIX0_PIM0SA); | |
147 | PCIX_WRITEL(0, PCIX0_PIM1SA); | |
148 | PCIX_WRITEL(0, PCIX0_PIM2SA); | |
149 | ||
150 | /* Setup 2GB PLB->PCI outbound mem window (3_8000_0000->0_8000_0000) */ | |
151 | PCIX_WRITEL(0x00000003, PCIX0_POM0LAH); | |
152 | PCIX_WRITEL(0x80000000, PCIX0_POM0LAL); | |
153 | PCIX_WRITEL(0x00000000, PCIX0_POM0PCIAH); | |
154 | PCIX_WRITEL(0x80000000, PCIX0_POM0PCIAL); | |
155 | PCIX_WRITEL(0x80000001, PCIX0_POM0SA); | |
156 | ||
157 | /* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */ | |
158 | PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH); | |
159 | PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL); | |
160 | PCIX_WRITEL(0x80000007, PCIX0_PIM0SA); | |
161 | ||
162 | eieio(); | |
163 | } | |
164 | ||
165 | static void __init | |
166 | ebony_setup_hose(void) | |
167 | { | |
168 | struct pci_controller *hose; | |
169 | ||
170 | /* Configure windows on the PCI-X host bridge */ | |
171 | ebony_setup_pcix(); | |
172 | ||
173 | hose = pcibios_alloc_controller(); | |
174 | ||
175 | if (!hose) | |
176 | return; | |
177 | ||
178 | hose->first_busno = 0; | |
179 | hose->last_busno = 0xff; | |
180 | ||
181 | hose->pci_mem_offset = EBONY_PCI_MEM_OFFSET; | |
182 | ||
183 | pci_init_resource(&hose->io_resource, | |
184 | EBONY_PCI_LOWER_IO, | |
185 | EBONY_PCI_UPPER_IO, | |
186 | IORESOURCE_IO, | |
187 | "PCI host bridge"); | |
188 | ||
189 | pci_init_resource(&hose->mem_resources[0], | |
190 | EBONY_PCI_LOWER_MEM, | |
191 | EBONY_PCI_UPPER_MEM, | |
192 | IORESOURCE_MEM, | |
193 | "PCI host bridge"); | |
194 | ||
195 | hose->io_space.start = EBONY_PCI_LOWER_IO; | |
196 | hose->io_space.end = EBONY_PCI_UPPER_IO; | |
197 | hose->mem_space.start = EBONY_PCI_LOWER_MEM; | |
198 | hose->mem_space.end = EBONY_PCI_UPPER_MEM; | |
92a11f9e AV |
199 | hose->io_base_virt = ioremap64(EBONY_PCI_IO_BASE, EBONY_PCI_IO_SIZE); |
200 | isa_io_base = (unsigned long)hose->io_base_virt; | |
1da177e4 LT |
201 | |
202 | setup_indirect_pci(hose, | |
203 | EBONY_PCI_CFGA_PLB32, | |
204 | EBONY_PCI_CFGD_PLB32); | |
205 | hose->set_cfg_type = 1; | |
206 | ||
207 | hose->last_busno = pciauto_bus_scan(hose, hose->first_busno); | |
208 | ||
209 | ppc_md.pci_swizzle = common_swizzle; | |
210 | ppc_md.pci_map_irq = ebony_map_irq; | |
211 | } | |
212 | ||
213 | TODC_ALLOC(); | |
214 | ||
215 | static void __init | |
216 | ebony_early_serial_map(void) | |
217 | { | |
218 | struct uart_port port; | |
219 | ||
220 | /* Setup ioremapped serial port access */ | |
221 | memset(&port, 0, sizeof(port)); | |
222 | port.membase = ioremap64(PPC440GP_UART0_ADDR, 8); | |
223 | port.irq = 0; | |
224 | port.uartclk = clocks.uart0; | |
225 | port.regshift = 0; | |
9b4a1617 | 226 | port.iotype = UPIO_MEM; |
59a675b2 | 227 | port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST; |
1da177e4 LT |
228 | port.line = 0; |
229 | ||
230 | if (early_serial_setup(&port) != 0) { | |
231 | printk("Early serial init of port 0 failed\n"); | |
232 | } | |
233 | ||
234 | #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB) | |
235 | /* Configure debug serial access */ | |
236 | gen550_init(0, &port); | |
5ce17b18 ES |
237 | |
238 | /* Purge TLB entry added in head_44x.S for early serial access */ | |
239 | _tlbie(UART0_IO_BASE); | |
1da177e4 LT |
240 | #endif |
241 | ||
242 | port.membase = ioremap64(PPC440GP_UART1_ADDR, 8); | |
243 | port.irq = 1; | |
244 | port.uartclk = clocks.uart1; | |
245 | port.line = 1; | |
246 | ||
247 | if (early_serial_setup(&port) != 0) { | |
248 | printk("Early serial init of port 1 failed\n"); | |
249 | } | |
250 | ||
251 | #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB) | |
252 | /* Configure debug serial access */ | |
253 | gen550_init(1, &port); | |
254 | #endif | |
255 | } | |
256 | ||
257 | static void __init | |
258 | ebony_setup_arch(void) | |
259 | { | |
260 | struct ocp_def *def; | |
261 | struct ocp_func_emac_data *emacdata; | |
262 | ||
263 | /* Set mac_addr for each EMAC */ | |
264 | def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0); | |
265 | emacdata = def->additions; | |
266 | emacdata->phy_map = 0x00000001; /* Skip 0x00 */ | |
267 | emacdata->phy_mode = PHY_MODE_RMII; | |
268 | memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6); | |
269 | ||
270 | def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 1); | |
271 | emacdata = def->additions; | |
272 | emacdata->phy_map = 0x00000001; /* Skip 0x00 */ | |
273 | emacdata->phy_mode = PHY_MODE_RMII; | |
274 | memcpy(emacdata->mac_addr, __res.bi_enet1addr, 6); | |
275 | ||
276 | /* | |
277 | * Determine various clocks. | |
278 | * To be completely correct we should get SysClk | |
279 | * from FPGA, because it can be changed by on-board switches | |
280 | * --ebs | |
281 | */ | |
282 | ibm440gp_get_clocks(&clocks, 33333333, 6 * 1843200); | |
283 | ocp_sys_info.opb_bus_freq = clocks.opb; | |
284 | ||
285 | /* Setup TODC access */ | |
286 | TODC_INIT(TODC_TYPE_DS1743, | |
287 | 0, | |
288 | 0, | |
289 | ioremap64(EBONY_RTC_ADDR, EBONY_RTC_SIZE), | |
290 | 8); | |
291 | ||
292 | /* init to some ~sane value until calibrate_delay() runs */ | |
293 | loops_per_jiffy = 50000000/HZ; | |
294 | ||
295 | /* Setup PCI host bridge */ | |
296 | ebony_setup_hose(); | |
297 | ||
298 | #ifdef CONFIG_BLK_DEV_INITRD | |
299 | if (initrd_start) | |
300 | ROOT_DEV = Root_RAM0; | |
301 | else | |
302 | #endif | |
303 | #ifdef CONFIG_ROOT_NFS | |
304 | ROOT_DEV = Root_NFS; | |
305 | #else | |
306 | ROOT_DEV = Root_HDA1; | |
307 | #endif | |
308 | ||
309 | ebony_early_serial_map(); | |
310 | ||
311 | /* Identify the system */ | |
312 | printk("IBM Ebony port (MontaVista Software, Inc. (source@mvista.com))\n"); | |
313 | } | |
314 | ||
315 | void __init platform_init(unsigned long r3, unsigned long r4, | |
316 | unsigned long r5, unsigned long r6, unsigned long r7) | |
317 | { | |
d5f7b06b | 318 | ibm44x_platform_init(r3, r4, r5, r6, r7); |
1da177e4 LT |
319 | |
320 | ppc_md.setup_arch = ebony_setup_arch; | |
321 | ppc_md.show_cpuinfo = ebony_show_cpuinfo; | |
322 | ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */ | |
323 | ||
324 | ppc_md.calibrate_decr = ebony_calibrate_decr; | |
325 | ppc_md.time_init = todc_time_init; | |
326 | ppc_md.set_rtc_time = todc_set_rtc_time; | |
327 | ppc_md.get_rtc_time = todc_get_rtc_time; | |
328 | ||
329 | ppc_md.nvram_read_val = todc_direct_read_val; | |
330 | ppc_md.nvram_write_val = todc_direct_write_val; | |
331 | #ifdef CONFIG_KGDB | |
332 | ppc_md.early_serial_map = ebony_early_serial_map; | |
333 | #endif | |
334 | } | |
335 |