diff options
Diffstat (limited to 'arch/powerpc/platforms/85xx/tqm85xx.c')
| -rw-r--r-- | arch/powerpc/platforms/85xx/tqm85xx.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/85xx/tqm85xx.c b/arch/powerpc/platforms/85xx/tqm85xx.c new file mode 100644 index 00000000..325de772 --- /dev/null +++ b/arch/powerpc/platforms/85xx/tqm85xx.c @@ -0,0 +1,217 @@ +/* + * Based on MPC8560 ADS and arch/ppc tqm85xx ports + * + * Maintained by Kumar Gala (see MAINTAINERS for contact information) + * + * Copyright 2008 Freescale Semiconductor Inc. + * + * Copyright (c) 2005-2006 DENX Software Engineering + * Stefan Roese <sr@denx.de> + * + * Based on original work by + * Kumar Gala <kumar.gala@freescale.com> + * Copyright 2004 Freescale Semiconductor 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/pci.h> +#include <linux/kdev_t.h> +#include <linux/delay.h> +#include <linux/seq_file.h> +#include <linux/of_platform.h> + +#include <asm/system.h> +#include <asm/time.h> +#include <asm/machdep.h> +#include <asm/pci-bridge.h> +#include <asm/mpic.h> +#include <asm/prom.h> +#include <mm/mmu_decl.h> +#include <asm/udbg.h> + +#include <sysdev/fsl_soc.h> +#include <sysdev/fsl_pci.h> + +#ifdef CONFIG_CPM2 +#include <asm/cpm2.h> +#include <sysdev/cpm2_pic.h> + +static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) +{ + struct irq_chip *chip = irq_desc_get_chip(desc); + int cascade_irq; + + while ((cascade_irq = cpm2_get_irq()) >= 0) + generic_handle_irq(cascade_irq); + + chip->irq_eoi(&desc->irq_data); +} +#endif /* CONFIG_CPM2 */ + +static void __init tqm85xx_pic_init(void) +{ + struct mpic *mpic; + struct resource r; + struct device_node *np; +#ifdef CONFIG_CPM2 + int irq; +#endif + + np = of_find_node_by_type(NULL, "open-pic"); + if (!np) { + printk(KERN_ERR "Could not find open-pic node\n"); + return; + } + + if (of_address_to_resource(np, 0, &r)) { + printk(KERN_ERR "Could not map mpic register space\n"); + of_node_put(np); + return; + } + + mpic = mpic_alloc(np, r.start, + MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, + 0, 256, " OpenPIC "); + BUG_ON(mpic == NULL); + of_node_put(np); + + mpic_init(mpic); + +#ifdef CONFIG_CPM2 + /* Setup CPM2 PIC */ + np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic"); + if (np == NULL) { + printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n"); + return; + } + irq = irq_of_parse_and_map(np, 0); + + if (irq == NO_IRQ) { + of_node_put(np); + printk(KERN_ERR "PIC init: got no IRQ for cpm cascade\n"); + return; + } + + cpm2_pic_init(np); + of_node_put(np); + irq_set_chained_handler(irq, cpm2_cascade); +#endif +} + +/* + * Setup the architecture + */ +static void __init tqm85xx_setup_arch(void) +{ +#ifdef CONFIG_PCI + struct device_node *np; +#endif + + if (ppc_md.progress) + ppc_md.progress("tqm85xx_setup_arch()", 0); + +#ifdef CONFIG_CPM2 + cpm2_reset(); +#endif + +#ifdef CONFIG_PCI + for_each_node_by_type(np, "pci") { + if (of_device_is_compatible(np, "fsl,mpc8540-pci") || + of_device_is_compatible(np, "fsl,mpc8548-pcie")) { + struct resource rsrc; + if (!of_address_to_resource(np, 0, &rsrc)) { + if ((rsrc.start & 0xfffff) == 0x8000) + fsl_add_bridge(np, 1); + else + fsl_add_bridge(np, 0); + } + } + } +#endif +} + +static void tqm85xx_show_cpuinfo(struct seq_file *m) +{ + uint pvid, svid, phid1; + + pvid = mfspr(SPRN_PVR); + svid = mfspr(SPRN_SVR); + + seq_printf(m, "Vendor\t\t: TQ Components\n"); + 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)); +} + +static void __init tqm85xx_ti1520_fixup(struct pci_dev *pdev) +{ + unsigned int val; + + /* Do not do the fixup on other platforms! */ + if (!machine_is(tqm85xx)) + return; + + dev_info(&pdev->dev, "Using TI 1520 fixup on TQM85xx\n"); + + /* + * Enable P2CCLK bit in system control register + * to enable CLOCK output to power chip + */ + pci_read_config_dword(pdev, 0x80, &val); + pci_write_config_dword(pdev, 0x80, val | (1 << 27)); + +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, + tqm85xx_ti1520_fixup); + +static struct of_device_id __initdata of_bus_ids[] = { + { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, + {}, +}; + +static int __init declare_of_platform_devices(void) +{ + of_platform_bus_probe(NULL, of_bus_ids, NULL); + + return 0; +} +machine_device_initcall(tqm85xx, declare_of_platform_devices); + +static const char *board[] __initdata = { + "tqc,tqm8540", + "tqc,tqm8541", + "tqc,tqm8548", + "tqc,tqm8555", + "tqc,tqm8560", + NULL +}; + +/* + * Called very early, device-tree isn't unflattened + */ +static int __init tqm85xx_probe(void) +{ + return of_flat_dt_match(of_get_flat_dt_root(), board); +} + +define_machine(tqm85xx) { + .name = "TQM85xx", + .probe = tqm85xx_probe, + .setup_arch = tqm85xx_setup_arch, + .init_IRQ = tqm85xx_pic_init, + .show_cpuinfo = tqm85xx_show_cpuinfo, + .get_irq = mpic_get_irq, + .restart = fsl_rstcr_restart, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; |