diff options
Diffstat (limited to 'arch/powerpc/platforms/52xx/lite5200.c')
| -rw-r--r-- | arch/powerpc/platforms/52xx/lite5200.c | 95 |
1 files changed, 50 insertions, 45 deletions
diff --git a/arch/powerpc/platforms/52xx/lite5200.c b/arch/powerpc/platforms/52xx/lite5200.c index e11d27f9c4f..0caa3d955c3 100644 --- a/arch/powerpc/platforms/52xx/lite5200.c +++ b/arch/powerpc/platforms/52xx/lite5200.c @@ -15,32 +15,13 @@ #undef DEBUG -#include <linux/stddef.h> -#include <linux/kernel.h> #include <linux/init.h> -#include <linux/errno.h> -#include <linux/reboot.h> #include <linux/pci.h> -#include <linux/kdev_t.h> -#include <linux/major.h> -#include <linux/console.h> -#include <linux/delay.h> -#include <linux/seq_file.h> -#include <linux/root_dev.h> -#include <linux/initrd.h> - -#include <asm/system.h> -#include <asm/atomic.h> +#include <linux/of.h> #include <asm/time.h> #include <asm/io.h> #include <asm/machdep.h> -#include <asm/ipic.h> -#include <asm/irq.h> #include <asm/prom.h> -#include <asm/udbg.h> -#include <sysdev/fsl_soc.h> -#include <asm/of_platform.h> - #include <asm/mpc52xx.h> /* ************************************************************************ @@ -49,19 +30,56 @@ * */ +/* + * Fix clock configuration. + * + * Firmware is supposed to be responsible for this. If you are creating a + * new board port, do *NOT* duplicate this code. Fix your boot firmware + * to set it correctly in the first place + */ static void __init -lite5200_setup_cpu(void) +lite5200_fix_clock_config(void) +{ + struct mpc52xx_cdm __iomem *cdm; + + /* Map zones */ + cdm = mpc52xx_find_and_map("mpc5200-cdm"); + if (!cdm) { + printk(KERN_ERR "%s() failed; expect abnormal behaviour\n", + __FUNCTION__); + return; + } + + /* Use internal 48 Mhz */ + out_8(&cdm->ext_48mhz_en, 0x00); + out_8(&cdm->fd_enable, 0x01); + if (in_be32(&cdm->rstcfg) & 0x40) /* Assumes 33Mhz clock */ + out_be16(&cdm->fd_counters, 0x0001); + else + out_be16(&cdm->fd_counters, 0x5555); + + /* Unmap the regs */ + iounmap(cdm); +} + +/* + * Fix setting of port_config register. + * + * Firmware is supposed to be responsible for this. If you are creating a + * new board port, do *NOT* duplicate this code. Fix your boot firmware + * to set it correctly in the first place + */ +static void __init +lite5200_fix_port_config(void) { struct mpc52xx_gpio __iomem *gpio; u32 port_config; - /* Map zones */ gpio = mpc52xx_find_and_map("mpc5200-gpio"); if (!gpio) { - printk(KERN_ERR __FILE__ ": " - "Error while mapping GPIO register for port config. " - "Expect some abnormal behavior\n"); - goto error; + printk(KERN_ERR "%s() failed. expect abnormal behavior\n", + __FUNCTION__); + return; } /* Set port config */ @@ -80,7 +98,6 @@ lite5200_setup_cpu(void) out_be32(&gpio->port_config, port_config); /* Unmap zone */ -error: iounmap(gpio); } @@ -119,9 +136,12 @@ static void __init lite5200_setup_arch(void) if (ppc_md.progress) ppc_md.progress("lite5200_setup_arch()", 0); - /* CPU & Port mux setup */ - mpc52xx_setup_cpu(); /* Generic */ - lite5200_setup_cpu(); /* Platorm specific */ + /* Fix things that firmware should have done. */ + lite5200_fix_clock_config(); + lite5200_fix_port_config(); + + /* Some mpc5200 & mpc5200b related configuration */ + mpc5200_setup_xlb_arbiter(); #ifdef CONFIG_PM mpc52xx_suspend.board_suspend_prepare = lite5200_suspend_prepare; @@ -150,20 +170,6 @@ static void __init lite5200_setup_arch(void) } -static void lite5200_show_cpuinfo(struct seq_file *m) -{ - struct device_node* np = of_find_all_nodes(NULL); - const char *model = NULL; - - if (np) - model = of_get_property(np, "model", NULL); - - seq_printf(m, "vendor\t\t: Freescale Semiconductor\n"); - seq_printf(m, "machine\t\t: %s\n", model ? model : "unknown"); - - of_node_put(np); -} - /* * Called very early, MMU is off, device-tree isn't unflattened */ @@ -187,6 +193,5 @@ define_machine(lite5200) { .init = mpc52xx_declare_of_platform_devices, .init_IRQ = mpc52xx_init_irq, .get_irq = mpc52xx_get_irq, - .show_cpuinfo = lite5200_show_cpuinfo, .calibrate_decr = generic_calibrate_decr, }; |