2 * Board setup routines for the esd CPCI-405 cPCI Board.
4 * Copyright 2001-2006 esd electronic system design - hannover germany
6 * Authors: Matthias Fuchs
7 * matthias.fuchs@esd-electronics.com
9 * stefan.roese@esd-electronics.com
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
18 #include <linux/init.h>
19 #include <linux/pci.h>
20 #include <asm/system.h>
21 #include <asm/pci-bridge.h>
22 #include <asm/machdep.h>
24 #include <linux/serial.h>
25 #include <linux/serial_core.h>
27 #include <asm/ibm_ocp_pci.h>
28 #include <platforms/4xx/ibm405gp.h>
37 * Some IRQs unique to CPCI-405.
40 ppc405_map_irq(struct pci_dev
*dev
, unsigned char idsel
, unsigned char pin
)
42 static char pci_irq_table
[][4] =
44 * PCI IDSEL/INTPIN->INTLINE
48 {28, 29, 30, 27}, /* IDSEL 15 - cPCI slot 8 */
49 {29, 30, 27, 28}, /* IDSEL 16 - cPCI slot 7 */
50 {30, 27, 28, 29}, /* IDSEL 17 - cPCI slot 6 */
51 {27, 28, 29, 30}, /* IDSEL 18 - cPCI slot 5 */
52 {28, 29, 30, 27}, /* IDSEL 19 - cPCI slot 4 */
53 {29, 30, 27, 28}, /* IDSEL 20 - cPCI slot 3 */
54 {30, 27, 28, 29}, /* IDSEL 21 - cPCI slot 2 */
56 const long min_idsel
= 15, max_idsel
= 21, irqs_per_slot
= 4;
57 return PCI_IRQ_TABLE_LOOKUP
;
60 /* The serial clock for the chip is an internal clock determined by
61 * different clock speeds/dividers.
62 * Calculate the proper input baud rate and setup the serial driver.
65 cpci405_early_serial_map(void)
69 struct uart_port port
;
71 /* Calculate the serial clock input frequency
73 * The uart clock is the cpu frequency (provided in the board info
74 * structure) divided by the external UART Divisor.
76 uart_div
= ((mfdcr(DCRN_CHCR_BASE
) & CHR0_UDIV
) >> 1) + 1;
77 uart_clock
= __res
.bi_procfreq
/ uart_div
;
79 /* Setup serial port access */
80 memset(&port
, 0, sizeof(port
));
81 #if defined(CONFIG_UART0_TTYS0)
82 port
.membase
= (void*)UART0_IO_BASE
;
85 port
.membase
= (void*)UART1_IO_BASE
;
88 port
.uartclk
= uart_clock
;
90 port
.iotype
= UPIO_MEM
;
91 port
.flags
= UPF_BOOT_AUTOCONF
| UPF_SKIP_TEST
;
94 if (early_serial_setup(&port
) != 0) {
95 printk("Early serial init of port 0 failed\n");
97 #if defined(CONFIG_UART0_TTYS0)
98 port
.membase
= (void*)UART1_IO_BASE
;
101 port
.membase
= (void*)UART0_IO_BASE
;
102 port
.irq
= UART0_INT
;
106 if (early_serial_setup(&port
) != 0) {
107 printk("Early serial init of port 1 failed\n");
112 cpci405_setup_arch(void)
116 ibm_ocp_set_emac(0, 0);
118 cpci405_early_serial_map();
120 #ifdef CONFIG_GEN_RTC
121 TODC_INIT(TODC_TYPE_MK48T35
,
122 cpci405_nvram
, cpci405_nvram
, cpci405_nvram
, 8);
127 bios_fixup(struct pci_controller
*hose
, struct pcil0_regs
*pcip
)
130 unsigned int bar_response
, bar
;
132 /* Disable region first */
133 out_le32((void *) &(pcip
->pmm
[0].ma
), 0x00000000);
134 /* PLB starting addr, PCI: 0x80000000 */
135 out_le32((void *) &(pcip
->pmm
[0].la
), 0x80000000);
136 /* PCI start addr, 0x80000000 */
137 out_le32((void *) &(pcip
->pmm
[0].pcila
), PPC405_PCI_MEM_BASE
);
138 /* 512MB range of PLB to PCI */
139 out_le32((void *) &(pcip
->pmm
[0].pciha
), 0x00000000);
140 /* Enable no pre-fetch, enable region */
141 out_le32((void *) &(pcip
->pmm
[0].ma
), ((0xffffffff -
142 (PPC405_PCI_UPPER_MEM
-
143 PPC405_PCI_MEM_BASE
)) | 0x01));
145 /* Disable region one */
146 out_le32((void *) &(pcip
->pmm
[1].ma
), 0x00000000);
147 out_le32((void *) &(pcip
->pmm
[1].la
), 0x00000000);
148 out_le32((void *) &(pcip
->pmm
[1].pcila
), 0x00000000);
149 out_le32((void *) &(pcip
->pmm
[1].pciha
), 0x00000000);
150 out_le32((void *) &(pcip
->pmm
[1].ma
), 0x00000000);
151 out_le32((void *) &(pcip
->ptm1ms
), 0x00000001);
153 /* Disable region two */
154 out_le32((void *) &(pcip
->pmm
[2].ma
), 0x00000000);
155 out_le32((void *) &(pcip
->pmm
[2].la
), 0x00000000);
156 out_le32((void *) &(pcip
->pmm
[2].pcila
), 0x00000000);
157 out_le32((void *) &(pcip
->pmm
[2].pciha
), 0x00000000);
158 out_le32((void *) &(pcip
->pmm
[2].ma
), 0x00000000);
159 out_le32((void *) &(pcip
->ptm2ms
), 0x00000000);
160 out_le32((void *) &(pcip
->ptm2la
), 0x00000000);
162 /* Zero config bars */
163 for (bar
= PCI_BASE_ADDRESS_1
; bar
<= PCI_BASE_ADDRESS_2
; bar
+= 4) {
164 early_write_config_dword(hose
, hose
->first_busno
,
165 PCI_FUNC(hose
->first_busno
), bar
,
167 early_read_config_dword(hose
, hose
->first_busno
,
168 PCI_FUNC(hose
->first_busno
), bar
,
179 #ifdef CONFIG_GEN_RTC
180 cpci405_nvram
= ioremap(CPCI405_NVRAM_PADDR
, CPCI405_NVRAM_SIZE
);
185 platform_init(unsigned long r3
, unsigned long r4
, unsigned long r5
,
186 unsigned long r6
, unsigned long r7
)
188 ppc4xx_init(r3
, r4
, r5
, r6
, r7
);
190 ppc_md
.setup_arch
= cpci405_setup_arch
;
191 ppc_md
.setup_io_mappings
= cpci405_map_io
;
193 #ifdef CONFIG_GEN_RTC
194 ppc_md
.time_init
= todc_time_init
;
195 ppc_md
.set_rtc_time
= todc_set_rtc_time
;
196 ppc_md
.get_rtc_time
= todc_get_rtc_time
;
197 ppc_md
.nvram_read_val
= todc_direct_read_val
;
198 ppc_md
.nvram_write_val
= todc_direct_write_val
;