diff options
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/44x/Kconfig | 7 | ||||
| -rw-r--r-- | arch/powerpc/platforms/44x/Makefile | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/44x/ppc44x_simple.c | 85 |
3 files changed, 93 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig index 249ba01c6674..97c634c8f9da 100644 --- a/arch/powerpc/platforms/44x/Kconfig +++ b/arch/powerpc/platforms/44x/Kconfig @@ -127,6 +127,13 @@ config XILINX_VIRTEX440_GENERIC_BOARD Most Virtex 5 designs should use this unless it needs to do some special configuration at board probe time. +config PPC44x_SIMPLE + bool "Simple PowerPC 44x board support" + depends on 44x + default n + help + This option enables the simple PowerPC 44x platform support. + # 44x specific CPU modules, selected based on the board above. config 440EP bool diff --git a/arch/powerpc/platforms/44x/Makefile b/arch/powerpc/platforms/44x/Makefile index 8d0b1a192d62..73c1df5bc051 100644 --- a/arch/powerpc/platforms/44x/Makefile +++ b/arch/powerpc/platforms/44x/Makefile @@ -1,4 +1,5 @@ obj-$(CONFIG_44x) := misc_44x.o idle.o +obj-$(CONFIG_PPC44x_SIMPLE) += ppc44x_simple.o obj-$(CONFIG_EBONY) += ebony.o obj-$(CONFIG_TAISHAN) += taishan.o obj-$(CONFIG_BAMBOO) += bamboo.o diff --git a/arch/powerpc/platforms/44x/ppc44x_simple.c b/arch/powerpc/platforms/44x/ppc44x_simple.c new file mode 100644 index 000000000000..32b0535f29fe --- /dev/null +++ b/arch/powerpc/platforms/44x/ppc44x_simple.c @@ -0,0 +1,85 @@ +/* + * Generic PowerPC 44x platform support + * + * Copyright 2008 IBM Corporation + * + * 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; version 2 of the License. + * + * This implements simple platform support for PowerPC 44x chips. This is + * mostly used for eval boards or other simple and "generic" 44x boards. If + * your board has custom functions or hardware, then you will likely want to + * implement your own board.c file to accommodate it. + */ + +#include <asm/machdep.h> +#include <asm/pci-bridge.h> +#include <asm/ppc4xx.h> +#include <asm/prom.h> +#include <asm/time.h> +#include <asm/udbg.h> +#include <asm/uic.h> + +#include <linux/init.h> +#include <linux/of_platform.h> + +static __initdata struct of_device_id ppc44x_of_bus[] = { + { .compatible = "ibm,plb4", }, + { .compatible = "ibm,opb", }, + { .compatible = "ibm,ebc", }, + { .compatible = "simple-bus", }, + {}, +}; + +static int __init ppc44x_device_probe(void) +{ + of_platform_bus_probe(NULL, ppc44x_of_bus, NULL); + + return 0; +} +machine_device_initcall(ppc44x_simple, ppc44x_device_probe); + +/* This is the list of boards that can be supported by this simple + * platform code. This does _not_ mean the boards are compatible, + * as they most certainly are not from a device tree perspective. + * However, their differences are handled by the device tree and the + * drivers and therefore they don't need custom board support files. + * + * Again, if your board needs to do things differently then create a + * board.c file for it rather than adding it to this list. + */ +static char *board[] __initdata = { + "amcc,bamboo", + "amcc,cayonlands", + "ibm,ebony", + "amcc,katmai", + "amcc,rainier", + "amcc,sequoia", + "amcc,taishan" +}; + +static int __init ppc44x_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + int i = 0; + + for (i = 0; i < ARRAY_SIZE(board); i++) { + if (of_flat_dt_is_compatible(root, board[i])) { + ppc_pci_flags = PPC_PCI_REASSIGN_ALL_RSRC; + return 1; + } + } + + return 0; +} + +define_machine(ppc44x_simple) { + .name = "PowerPC 44x Platform", + .probe = ppc44x_probe, + .progress = udbg_progress, + .init_IRQ = uic_init_tree, + .get_irq = uic_get_irq, + .restart = ppc4xx_reset_system, + .calibrate_decr = generic_calibrate_decr, +}; |