| /* |
| * Efika 5K2 platform code |
| * Some code really inspired from the lite5200b platform. |
| * |
| * Copyright (C) 2006 bplan GmbH |
| * |
| * This file is licensed under the terms of the GNU General Public License |
| * version 2. This program is licensed "as is" without any warranty of any |
| * kind, whether express or implied. |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/utsrelease.h> |
| #include <linux/pci.h> |
| #include <linux/of.h> |
| #include <asm/prom.h> |
| #include <asm/time.h> |
| #include <asm/machdep.h> |
| #include <asm/rtas.h> |
| #include <asm/mpc52xx.h> |
| |
| #define EFIKA_PLATFORM_NAME "Efika" |
| |
| |
| /* ------------------------------------------------------------------------ */ |
| /* PCI accesses thru RTAS */ |
| /* ------------------------------------------------------------------------ */ |
| |
| #ifdef CONFIG_PCI |
| |
| /* |
| * Access functions for PCI config space using RTAS calls. |
| */ |
| static int rtas_read_config(struct pci_bus *bus, unsigned int devfn, int offset, |
| int len, u32 * val) |
| { |
| struct pci_controller *hose = bus->sysdata; |
| unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8) |
| | (((bus->number - hose->first_busno) & 0xff) << 16) |
| | (hose->global_number << 24); |
| int ret = -1; |
| int rval; |
| |
| rval = rtas_call(rtas_token("read-pci-config"), 2, 2, &ret, addr, len); |
| *val = ret; |
| return rval ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; |
| } |
| |
| static int rtas_write_config(struct pci_bus *bus, unsigned int devfn, |
| int offset, int len, u32 val) |
| { |
| struct pci_controller *hose = bus->sysdata; |
| unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8) |
| | (((bus->number - hose->first_busno) & 0xff) << 16) |
| | (hose->global_number << 24); |
| int rval; |
| |
| rval = rtas_call(rtas_token("write-pci-config"), 3, 1, NULL, |
| addr, len, val); |
| return rval ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; |
| } |
| |
| static struct pci_ops rtas_pci_ops = { |
| .read = rtas_read_config, |
| .write = rtas_write_config, |
| }; |
| |
| |
| static void __init efika_pcisetup(void) |
| { |
| const int *bus_range; |
| int len; |
| struct pci_controller *hose; |
| struct device_node *root; |
| struct device_node *pcictrl; |
| |
| root = of_find_node_by_path("/"); |
| if (root == NULL) { |
| printk(KERN_WARNING EFIKA_PLATFORM_NAME |
| ": Unable to find the root node\n"); |
| return; |
| } |
| |
| for (pcictrl = NULL;;) { |
| pcictrl = of_get_next_child(root, pcictrl); |
| if ((pcictrl == NULL) || (strcmp(pcictrl->name, "pci") == 0)) |
| break; |
| } |
| |
| of_node_put(root); |
| |
| if (pcictrl == NULL) { |
| printk(KERN_WARNING EFIKA_PLATFORM_NAME |
| ": Unable to find the PCI bridge node\n"); |
| return; |
| } |
| |
| bus_range = of_get_property(pcictrl, "bus-range", &len); |
| if (bus_range == NULL || len < 2 * sizeof(int)) { |
| printk(KERN_WARNING EFIKA_PLATFORM_NAME |
| ": Can't get bus-range for %s\n", pcictrl->full_name); |
| return; |
| } |
| |
| if (bus_range[1] == bus_range[0]) |
| printk(KERN_INFO EFIKA_PLATFORM_NAME ": PCI bus %d", |
| bus_range[0]); |
| else |
| printk(KERN_INFO EFIKA_PLATFORM_NAME ": PCI buses %d..%d", |
| bus_range[0], bus_range[1]); |
| printk(" controlled by %s\n", pcictrl->full_name); |
| printk("\n"); |
| |
| hose = pcibios_alloc_controller(of_node_get(pcictrl)); |
| if (!hose) { |
| printk(KERN_WARNING EFIKA_PLATFORM_NAME |
| ": Can't allocate PCI controller structure for %s\n", |
| pcictrl->full_name); |
| return; |
| } |
| |
| hose->first_busno = bus_range[0]; |
| hose->last_busno = bus_range[1]; |
| hose->ops = &rtas_pci_ops; |
| |
| pci_process_bridge_OF_ranges(hose, pcictrl, 0); |
| } |
| |
| #else |
| static void __init efika_pcisetup(void) |
| {} |
| #endif |
| |
| |
| |
| /* ------------------------------------------------------------------------ */ |
| /* Platform setup */ |
| /* ------------------------------------------------------------------------ */ |
| |
| static void efika_show_cpuinfo(struct seq_file *m) |
| { |
| struct device_node *root; |
| const char *revision; |
| const char *codegendescription; |
| const char *codegenvendor; |
| |
| root = of_find_node_by_path("/"); |
| if (!root) |
| return; |
| |
| revision = of_get_property(root, "revision", NULL); |
| codegendescription = of_get_property(root, "CODEGEN,description", NULL); |
| codegenvendor = of_get_property(root, "CODEGEN,vendor", NULL); |
| |
| if (codegendescription) |
| seq_printf(m, "machine\t\t: %s\n", codegendescription); |
| else |
| seq_printf(m, "machine\t\t: Efika\n"); |
| |
| if (revision) |
| seq_printf(m, "revision\t: %s\n", revision); |
| |
| if (codegenvendor) |
| seq_printf(m, "vendor\t\t: %s\n", codegenvendor); |
| |
| of_node_put(root); |
| } |
| |
| #ifdef CONFIG_PM |
| static void efika_suspend_prepare(void __iomem *mbar) |
| { |
| u8 pin = 4; /* GPIO_WKUP_4 (GPIO_PSC6_0 - IRDA_RX) */ |
| u8 level = 1; /* wakeup on high level */ |
| /* IOW. to wake it up, short pins 1 and 3 on IRDA connector */ |
| mpc52xx_set_wakeup_gpio(pin, level); |
| } |
| #endif |
| |
| static void __init efika_setup_arch(void) |
| { |
| rtas_initialize(); |
| |
| efika_pcisetup(); |
| |
| #ifdef CONFIG_PM |
| mpc52xx_suspend.board_suspend_prepare = efika_suspend_prepare; |
| mpc52xx_pm_init(); |
| #endif |
| |
| if (ppc_md.progress) |
| ppc_md.progress("Linux/PPC " UTS_RELEASE " running on Efika ;-)\n", 0x0); |
| } |
| |
| static int __init efika_probe(void) |
| { |
| char *model = of_get_flat_dt_prop(of_get_flat_dt_root(), |
| "model", NULL); |
| |
| if (model == NULL) |
| return 0; |
| if (strcmp(model, "EFIKA5K2")) |
| return 0; |
| |
| ISA_DMA_THRESHOLD = ~0L; |
| DMA_MODE_READ = 0x44; |
| DMA_MODE_WRITE = 0x48; |
| |
| return 1; |
| } |
| |
| define_machine(efika) |
| { |
| .name = EFIKA_PLATFORM_NAME, |
| .probe = efika_probe, |
| .setup_arch = efika_setup_arch, |
| .init = mpc52xx_declare_of_platform_devices, |
| .show_cpuinfo = efika_show_cpuinfo, |
| .init_IRQ = mpc52xx_init_irq, |
| .get_irq = mpc52xx_get_irq, |
| .restart = rtas_restart, |
| .power_off = rtas_power_off, |
| .halt = rtas_halt, |
| .set_rtc_time = rtas_set_rtc_time, |
| .get_rtc_time = rtas_get_rtc_time, |
| .progress = rtas_progress, |
| .get_boot_time = rtas_get_boot_time, |
| .calibrate_decr = generic_calibrate_decr, |
| #ifdef CONFIG_PCI |
| .phys_mem_access_prot = pci_phys_mem_access_prot, |
| #endif |
| }; |
| |