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linux-stable/arch/powerpc/sysdev/fsl_soc.c
Paul Gortmaker 46c4c229ec powerpc/85xx: issue fsl_soc reboot warning only when applicable 
Some CPU, like the MPC8560 don't have a RSTCR in the Global
Utilities Block.  These boards will implement their own reboot
call, and not use this code, so we should only warn about the
absence of the GUTS RSTCR when the default reboot code is used.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2009-08-24 20:48:13 -05:00

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9.4 KiB
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/*
* FSL SoC setup code
*
* Maintained by Kumar Gala (see MAINTAINERS for contact information)
*
* 2006 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* 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/init.h>
#include <linux/errno.h>
#include <linux/major.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/phy.h>
#include <linux/phy_fixed.h>
#include <linux/spi/spi.h>
#include <linux/fsl_devices.h>
#include <linux/fs_enet_pd.h>
#include <linux/fs_uart_pd.h>
#include <asm/system.h>
#include <asm/atomic.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/time.h>
#include <asm/prom.h>
#include <asm/machdep.h>
#include <sysdev/fsl_soc.h>
#include <mm/mmu_decl.h>
#include <asm/cpm2.h>
extern void init_fcc_ioports(struct fs_platform_info*);
extern void init_fec_ioports(struct fs_platform_info*);
extern void init_smc_ioports(struct fs_uart_platform_info*);
static phys_addr_t immrbase = -1;
phys_addr_t get_immrbase(void)
{
struct device_node *soc;
if (immrbase != -1)
return immrbase;
soc = of_find_node_by_type(NULL, "soc");
if (soc) {
int size;
u32 naddr;
const u32 *prop = of_get_property(soc, "#address-cells", &size);
if (prop && size == 4)
naddr = *prop;
else
naddr = 2;
prop = of_get_property(soc, "ranges", &size);
if (prop)
immrbase = of_translate_address(soc, prop + naddr);
of_node_put(soc);
}
return immrbase;
}
EXPORT_SYMBOL(get_immrbase);
static u32 sysfreq = -1;
u32 fsl_get_sys_freq(void)
{
struct device_node *soc;
const u32 *prop;
int size;
if (sysfreq != -1)
return sysfreq;
soc = of_find_node_by_type(NULL, "soc");
if (!soc)
return -1;
prop = of_get_property(soc, "clock-frequency", &size);
if (!prop || size != sizeof(*prop) || *prop == 0)
prop = of_get_property(soc, "bus-frequency", &size);
if (prop && size == sizeof(*prop))
sysfreq = *prop;
of_node_put(soc);
return sysfreq;
}
EXPORT_SYMBOL(fsl_get_sys_freq);
#if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx)
static u32 brgfreq = -1;
u32 get_brgfreq(void)
{
struct device_node *node;
const unsigned int *prop;
int size;
if (brgfreq != -1)
return brgfreq;
node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
if (node) {
prop = of_get_property(node, "clock-frequency", &size);
if (prop && size == 4)
brgfreq = *prop;
of_node_put(node);
return brgfreq;
}
/* Legacy device binding -- will go away when no users are left. */
node = of_find_node_by_type(NULL, "cpm");
if (!node)
node = of_find_compatible_node(NULL, NULL, "fsl,qe");
if (!node)
node = of_find_node_by_type(NULL, "qe");
if (node) {
prop = of_get_property(node, "brg-frequency", &size);
if (prop && size == 4)
brgfreq = *prop;
if (brgfreq == -1 || brgfreq == 0) {
prop = of_get_property(node, "bus-frequency", &size);
if (prop && size == 4)
brgfreq = *prop / 2;
}
of_node_put(node);
}
return brgfreq;
}
EXPORT_SYMBOL(get_brgfreq);
static u32 fs_baudrate = -1;
u32 get_baudrate(void)
{
struct device_node *node;
if (fs_baudrate != -1)
return fs_baudrate;
node = of_find_node_by_type(NULL, "serial");
if (node) {
int size;
const unsigned int *prop = of_get_property(node,
"current-speed", &size);
if (prop)
fs_baudrate = *prop;
of_node_put(node);
}
return fs_baudrate;
}
EXPORT_SYMBOL(get_baudrate);
#endif /* CONFIG_CPM2 */
#ifdef CONFIG_FIXED_PHY
static int __init of_add_fixed_phys(void)
{
int ret;
struct device_node *np;
u32 *fixed_link;
struct fixed_phy_status status = {};
for_each_node_by_name(np, "ethernet") {
fixed_link = (u32 *)of_get_property(np, "fixed-link", NULL);
if (!fixed_link)
continue;
status.link = 1;
status.duplex = fixed_link[1];
status.speed = fixed_link[2];
status.pause = fixed_link[3];
status.asym_pause = fixed_link[4];
ret = fixed_phy_add(PHY_POLL, fixed_link[0], &status);
if (ret) {
of_node_put(np);
return ret;
}
}
return 0;
}
arch_initcall(of_add_fixed_phys);
#endif /* CONFIG_FIXED_PHY */
static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
{
if (!phy_type)
return FSL_USB2_PHY_NONE;
if (!strcasecmp(phy_type, "ulpi"))
return FSL_USB2_PHY_ULPI;
if (!strcasecmp(phy_type, "utmi"))
return FSL_USB2_PHY_UTMI;
if (!strcasecmp(phy_type, "utmi_wide"))
return FSL_USB2_PHY_UTMI_WIDE;
if (!strcasecmp(phy_type, "serial"))
return FSL_USB2_PHY_SERIAL;
return FSL_USB2_PHY_NONE;
}
static int __init fsl_usb_of_init(void)
{
struct device_node *np;
unsigned int i = 0;
struct platform_device *usb_dev_mph = NULL, *usb_dev_dr_host = NULL,
*usb_dev_dr_client = NULL;
int ret;
for_each_compatible_node(np, NULL, "fsl-usb2-mph") {
struct resource r[2];
struct fsl_usb2_platform_data usb_data;
const unsigned char *prop = NULL;
memset(&r, 0, sizeof(r));
memset(&usb_data, 0, sizeof(usb_data));
ret = of_address_to_resource(np, 0, &r[0]);
if (ret)
goto err;
of_irq_to_resource(np, 0, &r[1]);
usb_dev_mph =
platform_device_register_simple("fsl-ehci", i, r, 2);
if (IS_ERR(usb_dev_mph)) {
ret = PTR_ERR(usb_dev_mph);
goto err;
}
usb_dev_mph->dev.coherent_dma_mask = 0xffffffffUL;
usb_dev_mph->dev.dma_mask = &usb_dev_mph->dev.coherent_dma_mask;
usb_data.operating_mode = FSL_USB2_MPH_HOST;
prop = of_get_property(np, "port0", NULL);
if (prop)
usb_data.port_enables |= FSL_USB2_PORT0_ENABLED;
prop = of_get_property(np, "port1", NULL);
if (prop)
usb_data.port_enables |= FSL_USB2_PORT1_ENABLED;
prop = of_get_property(np, "phy_type", NULL);
usb_data.phy_mode = determine_usb_phy(prop);
ret =
platform_device_add_data(usb_dev_mph, &usb_data,
sizeof(struct
fsl_usb2_platform_data));
if (ret)
goto unreg_mph;
i++;
}
for_each_compatible_node(np, NULL, "fsl-usb2-dr") {
struct resource r[2];
struct fsl_usb2_platform_data usb_data;
const unsigned char *prop = NULL;
if (!of_device_is_available(np))
continue;
memset(&r, 0, sizeof(r));
memset(&usb_data, 0, sizeof(usb_data));
ret = of_address_to_resource(np, 0, &r[0]);
if (ret)
goto unreg_mph;
of_irq_to_resource(np, 0, &r[1]);
prop = of_get_property(np, "dr_mode", NULL);
if (!prop || !strcmp(prop, "host")) {
usb_data.operating_mode = FSL_USB2_DR_HOST;
usb_dev_dr_host = platform_device_register_simple(
"fsl-ehci", i, r, 2);
if (IS_ERR(usb_dev_dr_host)) {
ret = PTR_ERR(usb_dev_dr_host);
goto err;
}
} else if (prop && !strcmp(prop, "peripheral")) {
usb_data.operating_mode = FSL_USB2_DR_DEVICE;
usb_dev_dr_client = platform_device_register_simple(
"fsl-usb2-udc", i, r, 2);
if (IS_ERR(usb_dev_dr_client)) {
ret = PTR_ERR(usb_dev_dr_client);
goto err;
}
} else if (prop && !strcmp(prop, "otg")) {
usb_data.operating_mode = FSL_USB2_DR_OTG;
usb_dev_dr_host = platform_device_register_simple(
"fsl-ehci", i, r, 2);
if (IS_ERR(usb_dev_dr_host)) {
ret = PTR_ERR(usb_dev_dr_host);
goto err;
}
usb_dev_dr_client = platform_device_register_simple(
"fsl-usb2-udc", i, r, 2);
if (IS_ERR(usb_dev_dr_client)) {
ret = PTR_ERR(usb_dev_dr_client);
goto err;
}
} else {
ret = -EINVAL;
goto err;
}
prop = of_get_property(np, "phy_type", NULL);
usb_data.phy_mode = determine_usb_phy(prop);
if (usb_dev_dr_host) {
usb_dev_dr_host->dev.coherent_dma_mask = 0xffffffffUL;
usb_dev_dr_host->dev.dma_mask = &usb_dev_dr_host->
dev.coherent_dma_mask;
if ((ret = platform_device_add_data(usb_dev_dr_host,
&usb_data, sizeof(struct
fsl_usb2_platform_data))))
goto unreg_dr;
}
if (usb_dev_dr_client) {
usb_dev_dr_client->dev.coherent_dma_mask = 0xffffffffUL;
usb_dev_dr_client->dev.dma_mask = &usb_dev_dr_client->
dev.coherent_dma_mask;
if ((ret = platform_device_add_data(usb_dev_dr_client,
&usb_data, sizeof(struct
fsl_usb2_platform_data))))
goto unreg_dr;
}
i++;
}
return 0;
unreg_dr:
if (usb_dev_dr_host)
platform_device_unregister(usb_dev_dr_host);
if (usb_dev_dr_client)
platform_device_unregister(usb_dev_dr_client);
unreg_mph:
if (usb_dev_mph)
platform_device_unregister(usb_dev_mph);
err:
return ret;
}
arch_initcall(fsl_usb_of_init);
#if defined(CONFIG_PPC_85xx) || defined(CONFIG_PPC_86xx)
static __be32 __iomem *rstcr;
static int __init setup_rstcr(void)
{
struct device_node *np;
np = of_find_node_by_name(NULL, "global-utilities");
if ((np && of_get_property(np, "fsl,has-rstcr", NULL))) {
rstcr = of_iomap(np, 0) + 0xb0;
if (!rstcr)
printk (KERN_EMERG "Error: reset control register "
"not mapped!\n");
} else if (ppc_md.restart == fsl_rstcr_restart)
printk(KERN_ERR "No RSTCR register, warm reboot won't work\n");
if (np)
of_node_put(np);
return 0;
}
arch_initcall(setup_rstcr);
void fsl_rstcr_restart(char *cmd)
{
local_irq_disable();
if (rstcr)
/* set reset control register */
out_be32(rstcr, 0x2); /* HRESET_REQ */
while (1) ;
}
#endif
#if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
struct platform_diu_data_ops diu_ops;
EXPORT_SYMBOL(diu_ops);
#endif
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