Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Support for IBM PPC 405EP evaluation board (Bubinga). | |
3 | * | |
4 | * Author: SAW (IBM), derived from walnut.c. | |
5 | * Maintained by MontaVista Software <source@mvista.com> | |
6 | * | |
7 | * 2003 (c) MontaVista Softare Inc. This file is licensed under the | |
8 | * terms of the GNU General Public License version 2. This program is | |
9 | * licensed "as is" without any warranty of any kind, whether express | |
10 | * or implied. | |
11 | */ | |
12 | ||
1da177e4 LT |
13 | #include <linux/init.h> |
14 | #include <linux/smp.h> | |
15 | #include <linux/threads.h> | |
16 | #include <linux/param.h> | |
17 | #include <linux/string.h> | |
18 | #include <linux/blkdev.h> | |
19 | #include <linux/pci.h> | |
20 | #include <linux/rtc.h> | |
21 | #include <linux/tty.h> | |
22 | #include <linux/serial.h> | |
23 | #include <linux/serial_core.h> | |
b187f180 | 24 | #include <linux/serial_8250.h> |
1da177e4 LT |
25 | |
26 | #include <asm/system.h> | |
27 | #include <asm/pci-bridge.h> | |
28 | #include <asm/processor.h> | |
29 | #include <asm/machdep.h> | |
30 | #include <asm/page.h> | |
31 | #include <asm/time.h> | |
32 | #include <asm/io.h> | |
33 | #include <asm/todc.h> | |
34 | #include <asm/kgdb.h> | |
35 | #include <asm/ocp.h> | |
36 | #include <asm/ibm_ocp_pci.h> | |
37 | ||
38 | #include <platforms/4xx/ibm405ep.h> | |
39 | ||
40 | #undef DEBUG | |
41 | ||
42 | #ifdef DEBUG | |
43 | #define DBG(x...) printk(x) | |
44 | #else | |
45 | #define DBG(x...) | |
46 | #endif | |
47 | ||
48 | extern bd_t __res; | |
49 | ||
50 | void *bubinga_rtc_base; | |
51 | ||
52 | /* Some IRQs unique to the board | |
53 | * Used by the generic 405 PCI setup functions in ppc4xx_pci.c | |
54 | */ | |
55 | int __init | |
56 | ppc405_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) | |
57 | { | |
58 | static char pci_irq_table[][4] = | |
59 | /* | |
60 | * PCI IDSEL/INTPIN->INTLINE | |
61 | * A B C D | |
62 | */ | |
63 | { | |
64 | {28, 28, 28, 28}, /* IDSEL 1 - PCI slot 1 */ | |
65 | {29, 29, 29, 29}, /* IDSEL 2 - PCI slot 2 */ | |
66 | {30, 30, 30, 30}, /* IDSEL 3 - PCI slot 3 */ | |
67 | {31, 31, 31, 31}, /* IDSEL 4 - PCI slot 4 */ | |
68 | }; | |
69 | ||
70 | const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4; | |
71 | return PCI_IRQ_TABLE_LOOKUP; | |
72 | }; | |
73 | ||
74 | /* The serial clock for the chip is an internal clock determined by | |
75 | * different clock speeds/dividers. | |
76 | * Calculate the proper input baud rate and setup the serial driver. | |
77 | */ | |
78 | static void __init | |
79 | bubinga_early_serial_map(void) | |
80 | { | |
81 | u32 uart_div; | |
82 | int uart_clock; | |
83 | struct uart_port port; | |
84 | ||
85 | /* Calculate the serial clock input frequency | |
86 | * | |
87 | * The base baud is the PLL OUTA (provided in the board info | |
88 | * structure) divided by the external UART Divisor, divided | |
89 | * by 16. | |
90 | */ | |
91 | uart_div = (mfdcr(DCRN_CPC0_UCR_BASE) & DCRN_CPC0_UCR_U0DIV); | |
3e9e7c1d | 92 | uart_clock = __res.bi_procfreq / uart_div; |
1da177e4 LT |
93 | |
94 | /* Setup serial port access */ | |
95 | memset(&port, 0, sizeof(port)); | |
96 | port.membase = (void*)ACTING_UART0_IO_BASE; | |
97 | port.irq = ACTING_UART0_INT; | |
98 | port.uartclk = uart_clock; | |
99 | port.regshift = 0; | |
9b4a1617 | 100 | port.iotype = UPIO_MEM; |
59a675b2 | 101 | port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST; |
1da177e4 LT |
102 | port.line = 0; |
103 | ||
104 | if (early_serial_setup(&port) != 0) { | |
105 | printk("Early serial init of port 0 failed\n"); | |
106 | } | |
107 | ||
108 | port.membase = (void*)ACTING_UART1_IO_BASE; | |
109 | port.irq = ACTING_UART1_INT; | |
110 | port.line = 1; | |
111 | ||
112 | if (early_serial_setup(&port) != 0) { | |
113 | printk("Early serial init of port 1 failed\n"); | |
114 | } | |
115 | } | |
116 | ||
117 | void __init | |
118 | bios_fixup(struct pci_controller *hose, struct pcil0_regs *pcip) | |
119 | { | |
1d30593e | 120 | #ifdef CONFIG_PCI |
1da177e4 LT |
121 | |
122 | unsigned int bar_response, bar; | |
123 | /* | |
124 | * Expected PCI mapping: | |
125 | * | |
126 | * PLB addr PCI memory addr | |
127 | * --------------------- --------------------- | |
128 | * 0000'0000 - 7fff'ffff <--- 0000'0000 - 7fff'ffff | |
129 | * 8000'0000 - Bfff'ffff ---> 8000'0000 - Bfff'ffff | |
130 | * | |
131 | * PLB addr PCI io addr | |
132 | * --------------------- --------------------- | |
133 | * e800'0000 - e800'ffff ---> 0000'0000 - 0001'0000 | |
134 | * | |
135 | * The following code is simplified by assuming that the bootrom | |
136 | * has been well behaved in following this mapping. | |
137 | */ | |
138 | ||
139 | #ifdef DEBUG | |
140 | int i; | |
141 | ||
142 | printk("ioremap PCLIO_BASE = 0x%x\n", pcip); | |
143 | printk("PCI bridge regs before fixup \n"); | |
144 | for (i = 0; i <= 3; i++) { | |
145 | printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].ma))); | |
146 | printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].la))); | |
147 | printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].pcila))); | |
148 | printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].pciha))); | |
149 | } | |
150 | printk(" ptm1ms\t0x%x\n", in_le32(&(pcip->ptm1ms))); | |
151 | printk(" ptm1la\t0x%x\n", in_le32(&(pcip->ptm1la))); | |
152 | printk(" ptm2ms\t0x%x\n", in_le32(&(pcip->ptm2ms))); | |
153 | printk(" ptm2la\t0x%x\n", in_le32(&(pcip->ptm2la))); | |
154 | ||
155 | #endif | |
156 | ||
157 | /* added for IBM boot rom version 1.15 bios bar changes -AK */ | |
158 | ||
159 | /* Disable region first */ | |
160 | out_le32((void *) &(pcip->pmm[0].ma), 0x00000000); | |
161 | /* PLB starting addr, PCI: 0x80000000 */ | |
162 | out_le32((void *) &(pcip->pmm[0].la), 0x80000000); | |
163 | /* PCI start addr, 0x80000000 */ | |
164 | out_le32((void *) &(pcip->pmm[0].pcila), PPC405_PCI_MEM_BASE); | |
165 | /* 512MB range of PLB to PCI */ | |
166 | out_le32((void *) &(pcip->pmm[0].pciha), 0x00000000); | |
167 | /* Enable no pre-fetch, enable region */ | |
168 | out_le32((void *) &(pcip->pmm[0].ma), ((0xffffffff - | |
169 | (PPC405_PCI_UPPER_MEM - | |
170 | PPC405_PCI_MEM_BASE)) | 0x01)); | |
171 | ||
172 | /* Disable region one */ | |
173 | out_le32((void *) &(pcip->pmm[1].ma), 0x00000000); | |
174 | out_le32((void *) &(pcip->pmm[1].la), 0x00000000); | |
175 | out_le32((void *) &(pcip->pmm[1].pcila), 0x00000000); | |
176 | out_le32((void *) &(pcip->pmm[1].pciha), 0x00000000); | |
177 | out_le32((void *) &(pcip->pmm[1].ma), 0x00000000); | |
178 | out_le32((void *) &(pcip->ptm1ms), 0x00000001); | |
179 | ||
180 | /* Disable region two */ | |
181 | out_le32((void *) &(pcip->pmm[2].ma), 0x00000000); | |
182 | out_le32((void *) &(pcip->pmm[2].la), 0x00000000); | |
183 | out_le32((void *) &(pcip->pmm[2].pcila), 0x00000000); | |
184 | out_le32((void *) &(pcip->pmm[2].pciha), 0x00000000); | |
185 | out_le32((void *) &(pcip->pmm[2].ma), 0x00000000); | |
186 | out_le32((void *) &(pcip->ptm2ms), 0x00000000); | |
187 | out_le32((void *) &(pcip->ptm2la), 0x00000000); | |
188 | ||
189 | /* Zero config bars */ | |
190 | for (bar = PCI_BASE_ADDRESS_1; bar <= PCI_BASE_ADDRESS_2; bar += 4) { | |
191 | early_write_config_dword(hose, hose->first_busno, | |
192 | PCI_FUNC(hose->first_busno), bar, | |
193 | 0x00000000); | |
194 | early_read_config_dword(hose, hose->first_busno, | |
195 | PCI_FUNC(hose->first_busno), bar, | |
196 | &bar_response); | |
197 | DBG("BUS %d, device %d, Function %d bar 0x%8.8x is 0x%8.8x\n", | |
198 | hose->first_busno, PCI_SLOT(hose->first_busno), | |
199 | PCI_FUNC(hose->first_busno), bar, bar_response); | |
200 | } | |
a8de5ce9 | 201 | /* end workaround */ |
1da177e4 LT |
202 | |
203 | #ifdef DEBUG | |
204 | printk("PCI bridge regs after fixup \n"); | |
205 | for (i = 0; i <= 3; i++) { | |
206 | printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].ma))); | |
207 | printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].la))); | |
208 | printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].pcila))); | |
209 | printk(" pmm%dma\t0x%x\n", i, in_le32(&(pcip->pmm[i].pciha))); | |
210 | } | |
211 | printk(" ptm1ms\t0x%x\n", in_le32(&(pcip->ptm1ms))); | |
212 | printk(" ptm1la\t0x%x\n", in_le32(&(pcip->ptm1la))); | |
213 | printk(" ptm2ms\t0x%x\n", in_le32(&(pcip->ptm2ms))); | |
214 | printk(" ptm2la\t0x%x\n", in_le32(&(pcip->ptm2la))); | |
215 | ||
1d30593e | 216 | #endif |
1da177e4 LT |
217 | #endif |
218 | } | |
219 | ||
220 | void __init | |
221 | bubinga_setup_arch(void) | |
222 | { | |
223 | ppc4xx_setup_arch(); | |
224 | ||
225 | ibm_ocp_set_emac(0, 1); | |
226 | ||
227 | bubinga_early_serial_map(); | |
228 | ||
229 | /* RTC step for the evb405ep */ | |
230 | bubinga_rtc_base = (void *) BUBINGA_RTC_VADDR; | |
231 | TODC_INIT(TODC_TYPE_DS1743, bubinga_rtc_base, bubinga_rtc_base, | |
232 | bubinga_rtc_base, 8); | |
233 | /* Identify the system */ | |
234 | printk("IBM Bubinga port (MontaVista Software, Inc. <source@mvista.com>)\n"); | |
235 | } | |
236 | ||
237 | void __init | |
238 | bubinga_map_io(void) | |
239 | { | |
240 | ppc4xx_map_io(); | |
241 | io_block_mapping(BUBINGA_RTC_VADDR, | |
242 | BUBINGA_RTC_PADDR, BUBINGA_RTC_SIZE, _PAGE_IO); | |
243 | } | |
244 | ||
245 | void __init | |
246 | platform_init(unsigned long r3, unsigned long r4, unsigned long r5, | |
247 | unsigned long r6, unsigned long r7) | |
248 | { | |
249 | ppc4xx_init(r3, r4, r5, r6, r7); | |
250 | ||
251 | ppc_md.setup_arch = bubinga_setup_arch; | |
252 | ppc_md.setup_io_mappings = bubinga_map_io; | |
253 | ||
254 | #ifdef CONFIG_GEN_RTC | |
255 | ppc_md.time_init = todc_time_init; | |
256 | ppc_md.set_rtc_time = todc_set_rtc_time; | |
257 | ppc_md.get_rtc_time = todc_get_rtc_time; | |
258 | ppc_md.nvram_read_val = todc_direct_read_val; | |
259 | ppc_md.nvram_write_val = todc_direct_write_val; | |
260 | #endif | |
261 | #ifdef CONFIG_KGDB | |
262 | ppc_md.early_serial_map = bubinga_early_serial_map; | |
263 | #endif | |
264 | } | |
265 |