diff options
Diffstat (limited to 'arch/ppc/platforms/pal4_setup.c')
| -rw-r--r-- | arch/ppc/platforms/pal4_setup.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/arch/ppc/platforms/pal4_setup.c b/arch/ppc/platforms/pal4_setup.c new file mode 100644 index 000000000000..12446b93e38c --- /dev/null +++ b/arch/ppc/platforms/pal4_setup.c @@ -0,0 +1,175 @@ +/* + * arch/ppc/platforms/pal4_setup.c + * + * Board setup routines for the SBS PalomarIV. + * + * Author: Dan Cox + * + * 2002 (c) MontaVista, Software, Inc. 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/config.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/reboot.h> +#include <linux/time.h> +#include <linux/irq.h> +#include <linux/kdev_t.h> +#include <linux/initrd.h> +#include <linux/console.h> +#include <linux/seq_file.h> +#include <linux/root_dev.h> + +#include <asm/io.h> +#include <asm/todc.h> +#include <asm/bootinfo.h> + +#include <syslib/cpc700.h> + +#include "pal4.h" + +extern void pal4_find_bridges(void); + +unsigned int cpc700_irq_assigns[][2] = { + {1, 1}, /* IRQ 0: ECC correctable error */ + {1, 1}, /* IRQ 1: PCI write to memory range */ + {0, 1}, /* IRQ 2: PCI write to command register */ + {0, 1}, /* IRQ 3: UART 0 */ + {0, 1}, /* IRQ 4: UART 1 */ + {0, 1}, /* IRQ 5: ICC 0 */ + {0, 1}, /* IRQ 6: ICC 1 */ + {0, 1}, /* IRQ 7: GPT compare 0 */ + {0, 1}, /* IRQ 8: GPT compare 1 */ + {0, 1}, /* IRQ 9: GPT compare 2 */ + {0, 1}, /* IRQ 10: GPT compare 3 */ + {0, 1}, /* IRQ 11: GPT compare 4 */ + {0, 1}, /* IRQ 12: GPT capture 0 */ + {0, 1}, /* IRQ 13: GPT capture 1 */ + {0, 1}, /* IRQ 14: GPT capture 2 */ + {0, 1}, /* IRQ 15: GPT capture 3 */ + {0, 1}, /* IRQ 16: GPT capture 4 */ + {0, 0}, /* IRQ 17: reserved */ + {0, 0}, /* IRQ 18: reserved */ + {0, 0}, /* IRQ 19: reserved */ + {0, 0}, /* IRQ 20: reserved */ + {0, 1}, /* IRQ 21: Ethernet */ + {0, 0}, /* IRQ 22: reserved */ + {0, 0}, /* IRQ 23: reserved */ + {0, 0}, /* IRQ 24: resreved */ + {0, 0}, /* IRQ 25: reserved */ + {0, 0}, /* IRQ 26: reserved */ + {0, 0}, /* IRQ 27: reserved */ + {0, 0}, /* IRQ 28: reserved */ + {0, 0}, /* IRQ 29: reserved */ + {0, 0}, /* IRQ 30: reserved */ + {0, 0}, /* IRQ 31: reserved */ +}; + +static int +pal4_show_cpuinfo(struct seq_file *m) +{ + seq_printf(m, "board\t\t: SBS Palomar IV\n"); + + return 0; +} + +static void +pal4_restart(char *cmd) +{ + local_irq_disable(); + __asm__ __volatile__("lis 3,0xfff0\n \ + ori 3,3,0x100\n \ + mtspr 26,3\n \ + li 3,0\n \ + mtspr 27,3\n \ + rfi"); + + for(;;); +} + +static void +pal4_power_off(void) +{ + local_irq_disable(); + for(;;); +} + +static void +pal4_halt(void) +{ + pal4_power_off(); +} + +TODC_ALLOC(); + +static void __init +pal4_setup_arch(void) +{ + unsigned long l2; + + TODC_INIT(TODC_TYPE_MK48T37, 0, 0, + ioremap(PAL4_NVRAM, PAL4_NVRAM_SIZE), 8); + + pal4_find_bridges(); + +#ifdef CONFIG_BLK_DEV_INITRD + if (initrd_start) + ROOT_DEV = Root_RAM0; + else +#endif + ROOT_DEV = Root_NFS; + + /* The L2 gets disabled in the bootloader, but all the proper + bits should be present from the fw, so just re-enable it */ + l2 = _get_L2CR(); + if (!(l2 & L2CR_L2E)) { + /* presume that it was initially set if the size is + still present. */ + if (l2 ^ L2CR_L2SIZ_MASK) + _set_L2CR(l2 | L2CR_L2E); + else + printk("L2 not set by firmware; left disabled.\n"); + } +} + +static void __init +pal4_map_io(void) +{ + io_block_mapping(0xf0000000, 0xf0000000, 0x10000000, _PAGE_IO); +} + +void __init +platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + parse_bootinfo(find_bootinfo()); + + isa_io_base = 0 /*PAL4_ISA_IO_BASE*/; + pci_dram_offset = 0 /*PAL4_PCI_SYS_MEM_BASE*/; + + ppc_md.setup_arch = pal4_setup_arch; + ppc_md.show_cpuinfo = pal4_show_cpuinfo; + + ppc_md.setup_io_mappings = pal4_map_io; + + ppc_md.init_IRQ = cpc700_init_IRQ; + ppc_md.get_irq = cpc700_get_irq; + + ppc_md.restart = pal4_restart; + ppc_md.halt = pal4_halt; + ppc_md.power_off = pal4_power_off; + + ppc_md.time_init = todc_time_init; + ppc_md.set_rtc_time = todc_set_rtc_time; + ppc_md.get_rtc_time = todc_get_rtc_time; + ppc_md.calibrate_decr = todc_calibrate_decr; + + ppc_md.nvram_read_val = todc_direct_read_val; + ppc_md.nvram_write_val = todc_direct_write_val; +} + |