diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-31 13:37:27 +1100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-31 13:37:27 +1100 |
commit | 8af03e782cae1e0a0f530ddd22301cdd12cf9dc0 (patch) | |
tree | c4af13a38bd3cc1a811a37f2358491f171052070 /arch/powerpc/platforms/85xx/sbc8560.c | |
parent | 6232665040f9a23fafd9d94d4ae8d5a2dc850f65 (diff) | |
parent | 99e139126ab2e84be67969650f92eb37c12ab5cd (diff) |
Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (454 commits)
[POWERPC] Cell IOMMU fixed mapping support
[POWERPC] Split out the ioid fetching/checking logic
[POWERPC] Add support to cell_iommu_setup_page_tables() for multiple windows
[POWERPC] Split out the IOMMU logic from cell_dma_dev_setup()
[POWERPC] Split cell_iommu_setup_hardware() into two parts
[POWERPC] Split out the logic that allocates struct iommus
[POWERPC] Allocate the hash table under 1G on cell
[POWERPC] Add set_dma_ops() to match get_dma_ops()
[POWERPC] 83xx: Clean up / convert mpc83xx board DTS files to v1 format.
[POWERPC] 85xx: Only invalidate TLB0 and TLB1
[POWERPC] 83xx: Fix typo in mpc837x compatible entries
[POWERPC] 85xx: convert sbc85* boards to use machine_device_initcall
[POWERPC] 83xx: rework platform Kconfig
[POWERPC] 85xx: rework platform Kconfig
[POWERPC] 86xx: Remove unused IRQ defines
[POWERPC] QE: Explicitly set address-cells and size cells for muram
[POWERPC] Convert StorCenter DTS file to /dts-v1/ format.
[POWERPC] 86xx: Convert all 86xx DTS files to /dts-v1/ format.
[PPC] Remove 85xx from arch/ppc
[PPC] Remove 83xx from arch/ppc
...
Diffstat (limited to 'arch/powerpc/platforms/85xx/sbc8560.c')
-rw-r--r-- | arch/powerpc/platforms/85xx/sbc8560.c | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/85xx/sbc8560.c b/arch/powerpc/platforms/85xx/sbc8560.c new file mode 100644 index 00000000000..2c580cd24e4 --- /dev/null +++ b/arch/powerpc/platforms/85xx/sbc8560.c @@ -0,0 +1,283 @@ +/* + * Wind River SBC8560 setup and early boot code. + * + * Copyright 2007 Wind River Systems Inc. + * + * By Paul Gortmaker (see MAINTAINERS for contact information) + * + * Based largely on the MPC8560ADS 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/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 <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> +#endif + +#ifdef CONFIG_CPM2 + +static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) +{ + int cascade_irq; + + while ((cascade_irq = cpm2_get_irq()) >= 0) + generic_handle_irq(cascade_irq); + + desc->chip->eoi(irq); +} + +#endif /* CONFIG_CPM2 */ + +static void __init sbc8560_pic_init(void) +{ + struct mpic *mpic; + struct resource r; + struct device_node *np = NULL; +#ifdef CONFIG_CPM2 + int irq; +#endif + + np = of_find_node_by_type(np, "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); + + cpm2_pic_init(np); + of_node_put(np); + set_irq_chained_handler(irq, cpm2_cascade); +#endif +} + +/* + * Setup the architecture + */ +#ifdef CONFIG_CPM2 +struct cpm_pin { + int port, pin, flags; +}; + +static const struct cpm_pin sbc8560_pins[] = { + /* SCC1 */ + {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, + {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + + /* SCC2 */ + {3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + + /* FCC2 */ + {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, + {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK14 */ + {2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK13 */ + + /* FCC3 */ + {1, 4, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {1, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {1, 6, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {1, 7, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {1, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 14, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {1, 15, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, + {1, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {1, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, + {2, 16, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK16 */ + {2, 17, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK15 */ +}; + +static void __init init_ioports(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(sbc8560_pins); i++) { + struct cpm_pin *pin = &sbc8560_pins[i]; + cpm2_set_pin(pin->port, pin->pin, pin->flags); + } + + cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX); + cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX); + cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX); + cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX); + cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX); + cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX); + cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK15, CPM_CLK_RX); + cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK16, CPM_CLK_TX); +} +#endif + +static void __init sbc8560_setup_arch(void) +{ +#ifdef CONFIG_PCI + struct device_node *np; +#endif + + if (ppc_md.progress) + ppc_md.progress("sbc8560_setup_arch()", 0); + +#ifdef CONFIG_CPM2 + cpm2_reset(); + init_ioports(); +#endif + +#ifdef CONFIG_PCI + for_each_compatible_node(np, "pci", "fsl,mpc8540-pci") + fsl_add_bridge(np, 1); +#endif +} + +static void sbc8560_show_cpuinfo(struct seq_file *m) +{ + uint pvid, svid, phid1; + uint memsize = total_memory; + + pvid = mfspr(SPRN_PVR); + svid = mfspr(SPRN_SVR); + + seq_printf(m, "Vendor\t\t: Wind River\n"); + seq_printf(m, "Machine\t\t: SBC8560\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)); + + /* Display the amount of memory */ + seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024)); +} + +static struct of_device_id __initdata of_bus_ids[] = { + { .name = "soc", }, + { .type = "soc", }, + { .name = "cpm", }, + { .name = "localbus", }, + {}, +}; + +static int __init declare_of_platform_devices(void) +{ + of_platform_bus_probe(NULL, of_bus_ids, NULL); + + return 0; +} +machine_device_initcall(sbc8560, declare_of_platform_devices); + +/* + * Called very early, device-tree isn't unflattened + */ +static int __init sbc8560_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + return of_flat_dt_is_compatible(root, "SBC8560"); +} + +#ifdef CONFIG_RTC_DRV_M48T59 +static int __init sbc8560_rtc_init(void) +{ + struct device_node *np; + struct resource res; + struct platform_device *rtc_dev; + + np = of_find_compatible_node(NULL, NULL, "m48t59"); + if (np == NULL) { + printk("No RTC in DTB. Has it been eaten by wild dogs?\n"); + return -ENODEV; + } + + of_address_to_resource(np, 0, &res); + of_node_put(np); + + printk("Found RTC (m48t59) at i/o 0x%x\n", res.start); + + rtc_dev = platform_device_register_simple("rtc-m48t59", 0, &res, 1); + + if (IS_ERR(rtc_dev)) { + printk("Registering sbc8560 RTC device failed\n"); + return PTR_ERR(rtc_dev); + } + + return 0; +} + +arch_initcall(sbc8560_rtc_init); + +#endif /* M48T59 */ + +define_machine(sbc8560) { + .name = "SBC8560", + .probe = sbc8560_probe, + .setup_arch = sbc8560_setup_arch, + .init_IRQ = sbc8560_pic_init, + .show_cpuinfo = sbc8560_show_cpuinfo, + .get_irq = mpic_get_irq, + .restart = fsl_rstcr_restart, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; |