2 * Efika 5K2 platform code
3 * Some code really inspired from the lite5200b platform.
5 * Copyright (C) 2006 bplan GmbH
7 * This file is licensed under the terms of the GNU General Public License
8 * version 2. This program is licensed "as is" without any warranty of any
9 * kind, whether express or implied.
12 #include <linux/init.h>
13 #include <generated/utsrelease.h>
14 #include <linux/pci.h>
19 #include <asm/machdep.h>
21 #include <asm/mpc52xx.h>
23 #define EFIKA_PLATFORM_NAME "Efika"
26 /* ------------------------------------------------------------------------ */
27 /* PCI accesses thru RTAS */
28 /* ------------------------------------------------------------------------ */
33 * Access functions for PCI config space using RTAS calls.
35 static int rtas_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
38 struct pci_controller *hose = pci_bus_to_host(bus);
39 unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8)
40 | (((bus->number - hose->first_busno) & 0xff) << 16)
41 | (hose->global_number << 24);
45 rval = rtas_call(rtas_token("read-pci-config"), 2, 2, &ret, addr, len);
47 return rval ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
50 static int rtas_write_config(struct pci_bus *bus, unsigned int devfn,
51 int offset, int len, u32 val)
53 struct pci_controller *hose = pci_bus_to_host(bus);
54 unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8)
55 | (((bus->number - hose->first_busno) & 0xff) << 16)
56 | (hose->global_number << 24);
59 rval = rtas_call(rtas_token("write-pci-config"), 3, 1, NULL,
61 return rval ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
64 static struct pci_ops rtas_pci_ops = {
65 .read = rtas_read_config,
66 .write = rtas_write_config,
70 static void __init efika_pcisetup(void)
74 struct pci_controller *hose;
75 struct device_node *root;
76 struct device_node *pcictrl;
78 root = of_find_node_by_path("/");
80 printk(KERN_WARNING EFIKA_PLATFORM_NAME
81 ": Unable to find the root node\n");
85 for (pcictrl = NULL;;) {
86 pcictrl = of_get_next_child(root, pcictrl);
87 if ((pcictrl == NULL) || (strcmp(pcictrl->name, "pci") == 0))
93 if (pcictrl == NULL) {
94 printk(KERN_WARNING EFIKA_PLATFORM_NAME
95 ": Unable to find the PCI bridge node\n");
99 bus_range = of_get_property(pcictrl, "bus-range", &len);
100 if (bus_range == NULL || len < 2 * sizeof(int)) {
101 printk(KERN_WARNING EFIKA_PLATFORM_NAME
102 ": Can't get bus-range for %s\n", pcictrl->full_name);
106 if (bus_range[1] == bus_range[0])
107 printk(KERN_INFO EFIKA_PLATFORM_NAME ": PCI bus %d",
110 printk(KERN_INFO EFIKA_PLATFORM_NAME ": PCI buses %d..%d",
111 bus_range[0], bus_range[1]);
112 printk(" controlled by %s\n", pcictrl->full_name);
115 hose = pcibios_alloc_controller(pcictrl);
117 printk(KERN_WARNING EFIKA_PLATFORM_NAME
118 ": Can't allocate PCI controller structure for %s\n",
123 hose->first_busno = bus_range[0];
124 hose->last_busno = bus_range[1];
125 hose->ops = &rtas_pci_ops;
127 pci_process_bridge_OF_ranges(hose, pcictrl, 0);
130 of_node_put(pcictrl);
134 static void __init efika_pcisetup(void)
140 /* ------------------------------------------------------------------------ */
142 /* ------------------------------------------------------------------------ */
144 static void efika_show_cpuinfo(struct seq_file *m)
146 struct device_node *root;
147 const char *revision;
148 const char *codegendescription;
149 const char *codegenvendor;
151 root = of_find_node_by_path("/");
155 revision = of_get_property(root, "revision", NULL);
156 codegendescription = of_get_property(root, "CODEGEN,description", NULL);
157 codegenvendor = of_get_property(root, "CODEGEN,vendor", NULL);
159 if (codegendescription)
160 seq_printf(m, "machine\t\t: %s\n", codegendescription);
162 seq_printf(m, "machine\t\t: Efika\n");
165 seq_printf(m, "revision\t: %s\n", revision);
168 seq_printf(m, "vendor\t\t: %s\n", codegenvendor);
174 static void efika_suspend_prepare(void __iomem *mbar)
176 u8 pin = 4; /* GPIO_WKUP_4 (GPIO_PSC6_0 - IRDA_RX) */
177 u8 level = 1; /* wakeup on high level */
178 /* IOW. to wake it up, short pins 1 and 3 on IRDA connector */
179 mpc52xx_set_wakeup_gpio(pin, level);
183 static void __init efika_setup_arch(void)
187 /* Map important registers from the internal memory map */
188 mpc52xx_map_common_devices();
193 mpc52xx_suspend.board_suspend_prepare = efika_suspend_prepare;
198 ppc_md.progress("Linux/PPC " UTS_RELEASE " running on Efika ;-)\n", 0x0);
201 static int __init efika_probe(void)
203 const char *model = of_get_property(of_root, "model", NULL);
207 if (strcmp(model, "EFIKA5K2"))
210 ISA_DMA_THRESHOLD = ~0L;
211 DMA_MODE_READ = 0x44;
212 DMA_MODE_WRITE = 0x48;
214 pm_power_off = rtas_power_off;
219 define_machine(efika)
221 .name = EFIKA_PLATFORM_NAME,
222 .probe = efika_probe,
223 .setup_arch = efika_setup_arch,
224 .init = mpc52xx_declare_of_platform_devices,
225 .show_cpuinfo = efika_show_cpuinfo,
226 .init_IRQ = mpc52xx_init_irq,
227 .get_irq = mpc52xx_get_irq,
228 .restart = rtas_restart,
230 .set_rtc_time = rtas_set_rtc_time,
231 .get_rtc_time = rtas_get_rtc_time,
232 .progress = rtas_progress,
233 .get_boot_time = rtas_get_boot_time,
234 .calibrate_decr = generic_calibrate_decr,
236 .phys_mem_access_prot = pci_phys_mem_access_prot,