diff options
Diffstat (limited to 'kernel/arch/powerpc/platforms/85xx/sbc8548.c')
| -rw-r--r-- | kernel/arch/powerpc/platforms/85xx/sbc8548.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/kernel/arch/powerpc/platforms/85xx/sbc8548.c b/kernel/arch/powerpc/platforms/85xx/sbc8548.c new file mode 100644 index 000000000..b07214666 --- /dev/null +++ b/kernel/arch/powerpc/platforms/85xx/sbc8548.c @@ -0,0 +1,142 @@ +/* + * Wind River SBC8548 setup and early boot code. + * + * Copyright 2007 Wind River Systems Inc. + * + * By Paul Gortmaker (see MAINTAINERS for contact information) + * + * Based largely on the MPC8548CDS support - Copyright 2005 Freescale Inc. + * + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/reboot.h> +#include <linux/pci.h> +#include <linux/kdev_t.h> +#include <linux/major.h> +#include <linux/console.h> +#include <linux/delay.h> +#include <linux/seq_file.h> +#include <linux/initrd.h> +#include <linux/interrupt.h> +#include <linux/fsl_devices.h> +#include <linux/of_platform.h> + +#include <asm/pgtable.h> +#include <asm/page.h> +#include <linux/atomic.h> +#include <asm/time.h> +#include <asm/io.h> +#include <asm/machdep.h> +#include <asm/ipic.h> +#include <asm/pci-bridge.h> +#include <asm/irq.h> +#include <mm/mmu_decl.h> +#include <asm/prom.h> +#include <asm/udbg.h> +#include <asm/mpic.h> + +#include <sysdev/fsl_soc.h> +#include <sysdev/fsl_pci.h> + +#include "mpc85xx.h" + +static int sbc_rev; + +static void __init sbc8548_pic_init(void) +{ + struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN, + 0, 256, " OpenPIC "); + BUG_ON(mpic == NULL); + mpic_init(mpic); +} + +/* Extract the HW Rev from the EPLD on the board */ +static int __init sbc8548_hw_rev(void) +{ + struct device_node *np; + struct resource res; + unsigned int *rev; + int board_rev = 0; + + np = of_find_compatible_node(NULL, NULL, "hw-rev"); + if (np == NULL) { + printk("No HW-REV found in DTB.\n"); + return -ENODEV; + } + + of_address_to_resource(np, 0, &res); + of_node_put(np); + + rev = ioremap(res.start,sizeof(unsigned int)); + board_rev = (*rev) >> 28; + iounmap(rev); + + return board_rev; +} + +/* + * Setup the architecture + */ +static void __init sbc8548_setup_arch(void) +{ + if (ppc_md.progress) + ppc_md.progress("sbc8548_setup_arch()", 0); + + fsl_pci_assign_primary(); + + sbc_rev = sbc8548_hw_rev(); +} + +static void sbc8548_show_cpuinfo(struct seq_file *m) +{ + uint pvid, svid, phid1; + + pvid = mfspr(SPRN_PVR); + svid = mfspr(SPRN_SVR); + + seq_printf(m, "Vendor\t\t: Wind River\n"); + seq_printf(m, "Machine\t\t: SBC8548 v%d\n", sbc_rev); + seq_printf(m, "PVR\t\t: 0x%x\n", pvid); + seq_printf(m, "SVR\t\t: 0x%x\n", svid); + + /* Display cpu Pll setting */ + phid1 = mfspr(SPRN_HID1); + seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); +} + +machine_arch_initcall(sbc8548, mpc85xx_common_publish_devices); + +/* + * Called very early, device-tree isn't unflattened + */ +static int __init sbc8548_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + return of_flat_dt_is_compatible(root, "SBC8548"); +} + +define_machine(sbc8548) { + .name = "SBC8548", + .probe = sbc8548_probe, + .setup_arch = sbc8548_setup_arch, + .init_IRQ = sbc8548_pic_init, + .show_cpuinfo = sbc8548_show_cpuinfo, + .get_irq = mpic_get_irq, + .restart = fsl_rstcr_restart, +#ifdef CONFIG_PCI + .pcibios_fixup_bus = fsl_pcibios_fixup_bus, + .pcibios_fixup_phb = fsl_pcibios_fixup_phb, +#endif + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; |