2006-01-13 10:19:13 -07:00
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/*
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* FSL SoC setup code
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*
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* Maintained by Kumar Gala (see MAINTAINERS for contact information)
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*
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2006-09-21 07:26:34 -06:00
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* 2006 (c) MontaVista Software, Inc.
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* Vitaly Bordug <vbordug@ru.mvista.com>
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*
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2006-01-13 10:19:13 -07:00
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/major.h>
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#include <linux/delay.h>
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#include <linux/irq.h>
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2011-07-22 16:24:23 -06:00
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#include <linux/export.h>
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2006-01-13 10:19:13 -07:00
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#include <linux/device.h>
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#include <linux/platform_device.h>
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2009-02-19 09:02:23 -07:00
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#include <linux/of.h>
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2007-08-17 07:23:06 -06:00
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#include <linux/of_platform.h>
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2006-10-19 18:52:26 -06:00
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#include <linux/phy.h>
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2007-08-23 05:35:56 -06:00
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#include <linux/spi/spi.h>
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2006-01-13 10:19:13 -07:00
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#include <linux/fsl_devices.h>
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2006-09-21 07:26:34 -06:00
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#include <linux/fs_enet_pd.h>
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#include <linux/fs_uart_pd.h>
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2006-01-13 10:19:13 -07:00
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2011-07-26 17:09:06 -06:00
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#include <linux/atomic.h>
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2006-01-13 10:19:13 -07:00
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#include <asm/io.h>
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#include <asm/irq.h>
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2006-09-21 07:26:34 -06:00
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#include <asm/time.h>
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2006-01-13 10:19:13 -07:00
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#include <asm/prom.h>
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2009-08-14 10:13:53 -06:00
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#include <asm/machdep.h>
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2006-01-13 10:19:13 -07:00
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#include <sysdev/fsl_soc.h>
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#include <mm/mmu_decl.h>
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2006-09-21 07:26:34 -06:00
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#include <asm/cpm2.h>
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2011-05-19 07:54:29 -06:00
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#include <asm/fsl_hcalls.h> /* For the Freescale hypervisor */
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2006-01-13 10:19:13 -07:00
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2006-09-21 12:38:05 -06:00
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extern void init_fcc_ioports(struct fs_platform_info*);
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2007-01-24 12:41:15 -07:00
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extern void init_fec_ioports(struct fs_platform_info*);
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extern void init_smc_ioports(struct fs_uart_platform_info*);
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2006-01-13 10:19:13 -07:00
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static phys_addr_t immrbase = -1;
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phys_addr_t get_immrbase(void)
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{
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struct device_node *soc;
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if (immrbase != -1)
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return immrbase;
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soc = of_find_node_by_type(NULL, "soc");
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2006-01-23 15:58:04 -07:00
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if (soc) {
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2007-08-20 10:38:12 -06:00
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int size;
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2008-01-14 09:29:35 -07:00
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u32 naddr;
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2012-11-30 16:35:02 -07:00
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const __be32 *prop = of_get_property(soc, "#address-cells", &size);
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2006-09-21 07:26:34 -06:00
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2008-01-14 09:29:35 -07:00
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if (prop && size == 4)
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2012-11-30 16:35:02 -07:00
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naddr = be32_to_cpup(prop);
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2008-01-14 09:29:35 -07:00
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else
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naddr = 2;
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prop = of_get_property(soc, "ranges", &size);
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2006-09-21 07:26:34 -06:00
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if (prop)
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2008-01-14 09:29:35 -07:00
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immrbase = of_translate_address(soc, prop + naddr);
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2006-01-13 10:19:13 -07:00
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of_node_put(soc);
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2007-08-20 10:38:12 -06:00
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}
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2006-01-13 10:19:13 -07:00
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return immrbase;
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}
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2006-01-23 15:58:04 -07:00
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EXPORT_SYMBOL(get_immrbase);
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2006-01-13 10:19:13 -07:00
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2008-04-15 12:52:34 -06:00
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static u32 sysfreq = -1;
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u32 fsl_get_sys_freq(void)
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{
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struct device_node *soc;
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const u32 *prop;
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int size;
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if (sysfreq != -1)
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return sysfreq;
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soc = of_find_node_by_type(NULL, "soc");
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if (!soc)
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return -1;
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prop = of_get_property(soc, "clock-frequency", &size);
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if (!prop || size != sizeof(*prop) || *prop == 0)
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prop = of_get_property(soc, "bus-frequency", &size);
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if (prop && size == sizeof(*prop))
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sysfreq = *prop;
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of_node_put(soc);
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return sysfreq;
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}
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EXPORT_SYMBOL(fsl_get_sys_freq);
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2008-01-24 08:40:03 -07:00
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#if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx)
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2006-09-21 07:26:34 -06:00
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static u32 brgfreq = -1;
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u32 get_brgfreq(void)
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{
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struct device_node *node;
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2007-08-29 14:08:40 -06:00
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const unsigned int *prop;
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int size;
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2006-09-21 07:26:34 -06:00
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if (brgfreq != -1)
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return brgfreq;
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2007-08-29 14:08:40 -06:00
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node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
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2006-09-21 07:26:34 -06:00
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if (node) {
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2007-08-29 14:08:40 -06:00
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prop = of_get_property(node, "clock-frequency", &size);
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if (prop && size == 4)
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brgfreq = *prop;
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of_node_put(node);
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return brgfreq;
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}
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2006-09-21 07:26:34 -06:00
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2007-08-29 14:08:40 -06:00
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/* Legacy device binding -- will go away when no users are left. */
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node = of_find_node_by_type(NULL, "cpm");
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2008-01-24 08:40:03 -07:00
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if (!node)
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node = of_find_compatible_node(NULL, NULL, "fsl,qe");
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if (!node)
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node = of_find_node_by_type(NULL, "qe");
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2007-08-29 14:08:40 -06:00
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if (node) {
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prop = of_get_property(node, "brg-frequency", &size);
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2007-08-20 10:38:12 -06:00
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if (prop && size == 4)
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2006-09-21 07:26:34 -06:00
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brgfreq = *prop;
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2007-08-20 10:38:12 -06:00
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2008-01-24 08:40:03 -07:00
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if (brgfreq == -1 || brgfreq == 0) {
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prop = of_get_property(node, "bus-frequency", &size);
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if (prop && size == 4)
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brgfreq = *prop / 2;
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}
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2006-09-21 07:26:34 -06:00
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of_node_put(node);
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2007-08-20 10:38:12 -06:00
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}
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2006-09-21 07:26:34 -06:00
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return brgfreq;
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}
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EXPORT_SYMBOL(get_brgfreq);
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static u32 fs_baudrate = -1;
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u32 get_baudrate(void)
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{
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struct device_node *node;
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if (fs_baudrate != -1)
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return fs_baudrate;
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node = of_find_node_by_type(NULL, "serial");
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if (node) {
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2007-08-20 10:38:12 -06:00
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int size;
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2007-04-03 06:26:41 -06:00
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const unsigned int *prop = of_get_property(node,
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"current-speed", &size);
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2006-09-21 07:26:34 -06:00
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if (prop)
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fs_baudrate = *prop;
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of_node_put(node);
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2007-08-20 10:38:12 -06:00
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}
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2006-09-21 07:26:34 -06:00
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return fs_baudrate;
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}
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EXPORT_SYMBOL(get_baudrate);
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#endif /* CONFIG_CPM2 */
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2009-10-16 17:31:48 -06:00
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#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
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2007-10-04 00:04:57 -06:00
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static __be32 __iomem *rstcr;
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static int __init setup_rstcr(void)
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{
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struct device_node *np;
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2010-08-31 16:44:51 -06:00
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for_each_node_by_name(np, "global-utilities") {
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if ((of_get_property(np, "fsl,has-rstcr", NULL))) {
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rstcr = of_iomap(np, 0) + 0xb0;
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if (!rstcr)
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printk (KERN_ERR "Error: reset control "
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"register not mapped!\n");
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break;
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}
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}
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if (!rstcr && ppc_md.restart == fsl_rstcr_restart)
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2009-08-14 10:13:53 -06:00
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printk(KERN_ERR "No RSTCR register, warm reboot won't work\n");
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2014-08-08 04:07:45 -06:00
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of_node_put(np);
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2010-08-31 16:44:51 -06:00
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2007-10-04 00:04:57 -06:00
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return 0;
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}
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arch_initcall(setup_rstcr);
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void fsl_rstcr_restart(char *cmd)
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{
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local_irq_disable();
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if (rstcr)
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/* set reset control register */
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out_be32(rstcr, 0x2); /* HRESET_REQ */
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while (1) ;
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}
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#endif
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2008-04-28 03:15:36 -06:00
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#if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
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2008-09-23 08:47:01 -06:00
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struct platform_diu_data_ops diu_ops;
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2008-04-28 03:15:36 -06:00
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EXPORT_SYMBOL(diu_ops);
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#endif
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2011-05-19 07:54:29 -06:00
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2012-07-02 23:48:55 -06:00
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#ifdef CONFIG_EPAPR_PARAVIRT
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2011-05-19 07:54:29 -06:00
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/*
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* Restart the current partition
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*
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* This function should be assigned to the ppc_md.restart function pointer,
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* to initiate a partition restart when we're running under the Freescale
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* hypervisor.
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*/
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void fsl_hv_restart(char *cmd)
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{
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pr_info("hv restart\n");
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fh_partition_restart(-1);
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}
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/*
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* Halt the current partition
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*
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2014-10-13 08:01:09 -06:00
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* This function should be assigned to the pm_power_off and ppc_md.halt
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2011-05-19 07:54:29 -06:00
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* function pointers, to shut down the partition when we're running under
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* the Freescale hypervisor.
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*/
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void fsl_hv_halt(void)
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{
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pr_info("hv exit\n");
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fh_partition_stop(-1);
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}
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2012-07-02 23:48:55 -06:00
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#endif
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