diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/512x/Kconfig | 15 | ||||
| -rw-r--r-- | arch/powerpc/platforms/512x/Makefile | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/512x/mpc5121_ads.c | 64 | ||||
| -rw-r--r-- | arch/powerpc/platforms/512x/mpc5121_generic.c | 58 | ||||
| -rw-r--r-- | arch/powerpc/platforms/512x/mpc512x.h | 17 | ||||
| -rw-r--r-- | arch/powerpc/platforms/512x/mpc512x_shared.c | 83 |
6 files changed, 177 insertions, 63 deletions
diff --git a/arch/powerpc/platforms/512x/Kconfig b/arch/powerpc/platforms/512x/Kconfig index 162af067d12..5d72dc3435a 100644 --- a/arch/powerpc/platforms/512x/Kconfig +++ b/arch/powerpc/platforms/512x/Kconfig @@ -3,12 +3,10 @@ config PPC_MPC512x select FSL_SOC select IPIC select PPC_CLOCK - default n config PPC_MPC5121 bool select PPC_MPC512x - default n config MPC5121_ADS bool "Freescale MPC5121E ADS" @@ -17,4 +15,15 @@ config MPC5121_ADS select PPC_MPC5121 help This option enables support for the MPC5121E ADS board. - default n + +config MPC5121_GENERIC + bool "Generic support for simple MPC5121 based boards" + depends on PPC_MULTIPLATFORM && PPC32 + select DEFAULT_UIMAGE + select PPC_MPC5121 + help + This option enables support for simple MPC5121 based boards + which do not need custom platform specific setup. + + Compatible boards include: Protonic LVT base boards (ZANMCU + and VICVT2). diff --git a/arch/powerpc/platforms/512x/Makefile b/arch/powerpc/platforms/512x/Makefile index 90910c1f725..8090e222a2d 100644 --- a/arch/powerpc/platforms/512x/Makefile +++ b/arch/powerpc/platforms/512x/Makefile @@ -1,5 +1,6 @@ # # Makefile for the Freescale PowerPC 512x linux kernel. # -obj-y += clock.o +obj-y += clock.o mpc512x_shared.o obj-$(CONFIG_MPC5121_ADS) += mpc5121_ads.o +obj-$(CONFIG_MPC5121_GENERIC) += mpc5121_generic.o diff --git a/arch/powerpc/platforms/512x/mpc5121_ads.c b/arch/powerpc/platforms/512x/mpc5121_ads.c index 50bd3a31902..3ec9ca34d8e 100644 --- a/arch/powerpc/platforms/512x/mpc5121_ads.c +++ b/arch/powerpc/platforms/512x/mpc5121_ads.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. + * Copyright (C) 2007, 2008 Freescale Semiconductor, Inc. All rights reserved. * * Author: John Rigby, <jrigby@freescale.com>, Thur Mar 29 2007 * @@ -15,7 +15,6 @@ #include <linux/kernel.h> #include <linux/io.h> -#include <linux/irq.h> #include <linux/of_platform.h> #include <asm/machdep.h> @@ -23,65 +22,11 @@ #include <asm/prom.h> #include <asm/time.h> -/** - * mpc512x_find_ips_freq - Find the IPS bus frequency for a device - * @node: device node - * - * Returns IPS bus frequency, or 0 if the bus frequency cannot be found. - */ -unsigned long -mpc512x_find_ips_freq(struct device_node *node) -{ - struct device_node *np; - const unsigned int *p_ips_freq = NULL; - - of_node_get(node); - while (node) { - p_ips_freq = of_get_property(node, "bus-frequency", NULL); - if (p_ips_freq) - break; - - np = of_get_parent(node); - of_node_put(node); - node = np; - } - if (node) - of_node_put(node); - - return p_ips_freq ? *p_ips_freq : 0; -} -EXPORT_SYMBOL(mpc512x_find_ips_freq); - -static struct of_device_id __initdata of_bus_ids[] = { - { .name = "soc", }, - { .name = "localbus", }, - {}, -}; - -static void __init mpc5121_ads_declare_of_platform_devices(void) -{ - /* Find every child of the SOC node and add it to of_platform */ - if (of_platform_bus_probe(NULL, of_bus_ids, NULL)) - printk(KERN_ERR __FILE__ ": " - "Error while probing of_platform bus\n"); -} +#include "mpc512x.h" static void __init mpc5121_ads_init_IRQ(void) { - struct device_node *np; - - np = of_find_compatible_node(NULL, NULL, "fsl,ipic"); - if (!np) - return; - - ipic_init(np, 0); - of_node_put(np); - - /* - * Initialize the default interrupt mapping priorities, - * in case the boot rom changed something on us. - */ - ipic_set_default_priority(); + mpc512x_init_IRQ(); } /* @@ -97,7 +42,8 @@ static int __init mpc5121_ads_probe(void) define_machine(mpc5121_ads) { .name = "MPC5121 ADS", .probe = mpc5121_ads_probe, - .init = mpc5121_ads_declare_of_platform_devices, + .setup_arch = mpc5121_ads_setup_arch, + .init = mpc512x_declare_of_platform_devices, .init_IRQ = mpc5121_ads_init_IRQ, .get_irq = ipic_get_irq, .calibrate_decr = generic_calibrate_decr, diff --git a/arch/powerpc/platforms/512x/mpc5121_generic.c b/arch/powerpc/platforms/512x/mpc5121_generic.c new file mode 100644 index 00000000000..2479de9e2d1 --- /dev/null +++ b/arch/powerpc/platforms/512x/mpc5121_generic.c @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved. + * + * Author: John Rigby, <jrigby@freescale.com> + * + * Description: + * MPC5121 SoC setup + * + * This 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/kernel.h> +#include <linux/of_platform.h> + +#include <asm/machdep.h> +#include <asm/ipic.h> +#include <asm/prom.h> +#include <asm/time.h> + +#include "mpc512x.h" + +/* + * list of supported boards + */ +static char *board[] __initdata = { + "prt,prtlvt", + NULL +}; + +/* + * Called very early, MMU is off, device-tree isn't unflattened + */ +static int __init mpc5121_generic_probe(void) +{ + unsigned long node = of_get_flat_dt_root(); + int i = 0; + + while (board[i]) { + if (of_flat_dt_is_compatible(node, board[i])) + break; + i++; + } + + return board[i] != NULL; +} + +define_machine(mpc5121_generic) { + .name = "MPC5121 generic", + .probe = mpc5121_generic_probe, + .init = mpc512x_declare_of_platform_devices, + .init_IRQ = mpc512x_init_IRQ, + .get_irq = ipic_get_irq, + .calibrate_decr = generic_calibrate_decr, +}; diff --git a/arch/powerpc/platforms/512x/mpc512x.h b/arch/powerpc/platforms/512x/mpc512x.h new file mode 100644 index 00000000000..9c03693cb00 --- /dev/null +++ b/arch/powerpc/platforms/512x/mpc512x.h @@ -0,0 +1,17 @@ +/* + * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved. + * + * 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. + * + * Prototypes for MPC512x shared code + */ + +#ifndef __MPC512X_H__ +#define __MPC512X_H__ +extern unsigned long mpc512x_find_ips_freq(struct device_node *node); +extern void __init mpc512x_init_IRQ(void); +void __init mpc512x_declare_of_platform_devices(void); +#endif /* __MPC512X_H__ */ diff --git a/arch/powerpc/platforms/512x/mpc512x_shared.c b/arch/powerpc/platforms/512x/mpc512x_shared.c new file mode 100644 index 00000000000..d8cd579f319 --- /dev/null +++ b/arch/powerpc/platforms/512x/mpc512x_shared.c @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2007,2008 Freescale Semiconductor, Inc. All rights reserved. + * + * Author: John Rigby <jrigby@freescale.com> + * + * Description: + * MPC512x Shared code + * + * This 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/kernel.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/of_platform.h> + +#include <asm/machdep.h> +#include <asm/ipic.h> +#include <asm/prom.h> +#include <asm/time.h> + +#include "mpc512x.h" + +unsigned long +mpc512x_find_ips_freq(struct device_node *node) +{ + struct device_node *np; + const unsigned int *p_ips_freq = NULL; + + of_node_get(node); + while (node) { + p_ips_freq = of_get_property(node, "bus-frequency", NULL); + if (p_ips_freq) + break; + + np = of_get_parent(node); + of_node_put(node); + node = np; + } + if (node) + of_node_put(node); + + return p_ips_freq ? *p_ips_freq : 0; +} +EXPORT_SYMBOL(mpc512x_find_ips_freq); + +void __init mpc512x_init_IRQ(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-ipic"); + if (!np) + return; + + ipic_init(np, 0); + of_node_put(np); + + /* + * Initialize the default interrupt mapping priorities, + * in case the boot rom changed something on us. + */ + ipic_set_default_priority(); +} + +/* + * Nodes to do bus probe on, soc and localbus + */ +static struct of_device_id __initdata of_bus_ids[] = { + { .compatible = "fsl,mpc5121-immr", }, + { .compatible = "fsl,mpc5121-localbus", }, + {}, +}; + +void __init mpc512x_declare_of_platform_devices(void) +{ + if (of_platform_bus_probe(NULL, of_bus_ids, NULL)) + printk(KERN_ERR __FILE__ ": " + "Error while probing of_platform bus\n"); +} + |