diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-11 21:55:47 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-11 21:55:47 -0700 |
commit | e86908614f2c7fec401827e5cefd7a6ea9407f85 (patch) | |
tree | fcb5d9e52422b37bdaf0e647126ebdfc1680f162 /arch/powerpc/platforms/52xx/lite5200.c | |
parent | 547307420931344a868275bd7ea7a30f117a15a9 (diff) | |
parent | 9b4b8feb962f4b3e74768b7205f1f8f6cce87238 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (408 commits)
[POWERPC] Add memchr() to the bootwrapper
[POWERPC] Implement logging of unhandled signals
[POWERPC] Add legacy serial support for OPB with flattened device tree
[POWERPC] Use 1TB segments
[POWERPC] XilinxFB: Allow fixed framebuffer base address
[POWERPC] XilinxFB: Add support for custom screen resolution
[POWERPC] XilinxFB: Use pdata to pass around framebuffer parameters
[POWERPC] PCI: Add 64-bit physical address support to setup_indirect_pci
[POWERPC] 4xx: Kilauea defconfig file
[POWERPC] 4xx: Kilauea DTS
[POWERPC] 4xx: Add AMCC Kilauea eval board support to platforms/40x
[POWERPC] 4xx: Add AMCC 405EX support to cputable.c
[POWERPC] Adjust TASK_SIZE on ppc32 systems to 3GB that are capable
[POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers
[POWERPC] 85xx: Enable FP emulation in MPC8560 ADS defconfig
[POWERPC] 85xx: Killed <asm/mpc85xx.h>
[POWERPC] 85xx: Add cpm nodes for 8541/8555 CDS
[POWERPC] 85xx: Convert mpc8560ads to the new CPM binding.
[POWERPC] mpc8272ads: Remove muram from the CPM reg property.
[POWERPC] Make clockevents work on PPC601 processors
...
Fixed up conflict in Documentation/powerpc/booting-without-of.txt manually.
Diffstat (limited to 'arch/powerpc/platforms/52xx/lite5200.c')
-rw-r--r-- | arch/powerpc/platforms/52xx/lite5200.c | 121 |
1 files changed, 60 insertions, 61 deletions
diff --git a/arch/powerpc/platforms/52xx/lite5200.c b/arch/powerpc/platforms/52xx/lite5200.c index 5c46e898fd4..0caa3d955c3 100644 --- a/arch/powerpc/platforms/52xx/lite5200.c +++ b/arch/powerpc/platforms/52xx/lite5200.c @@ -15,33 +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/bootinfo.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> /* ************************************************************************ @@ -50,19 +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_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_setup_cpu(void) +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 */ @@ -81,12 +98,10 @@ lite5200_setup_cpu(void) out_be32(&gpio->port_config, port_config); /* Unmap zone */ -error: iounmap(gpio); } #ifdef CONFIG_PM -static u32 descr_a; static void lite5200_suspend_prepare(void __iomem *mbar) { u8 pin = 1; /* GPIO_WKUP_1 (GPIO_PSC2_4) */ @@ -97,42 +112,41 @@ static void lite5200_suspend_prepare(void __iomem *mbar) * power down usb port * this needs to be called before of-ohci suspend code */ - descr_a = in_be32(mbar + 0x1048); - out_be32(mbar + 0x1048, (descr_a & ~0x200) | 0x100); + + /* set ports to "power switched" and "powered at the same time" + * USB Rh descriptor A: NPS = 0, PSM = 0 */ + out_be32(mbar + 0x1048, in_be32(mbar + 0x1048) & ~0x300); + /* USB Rh status: LPS = 1 - turn off power */ + out_be32(mbar + 0x1050, 0x00000001); } static void lite5200_resume_finish(void __iomem *mbar) { - out_be32(mbar + 0x1048, descr_a); + /* USB Rh status: LPSC = 1 - turn on power */ + out_be32(mbar + 0x1050, 0x00010000); } #endif static void __init lite5200_setup_arch(void) { +#ifdef CONFIG_PCI struct device_node *np; +#endif if (ppc_md.progress) ppc_md.progress("lite5200_setup_arch()", 0); - np = of_find_node_by_type(NULL, "cpu"); - if (np) { - const unsigned int *fp = - of_get_property(np, "clock-frequency", NULL); - if (fp != 0) - loops_per_jiffy = *fp / HZ; - else - loops_per_jiffy = 50000000 / HZ; - of_node_put(np); - } + /* Fix things that firmware should have done. */ + lite5200_fix_clock_config(); + lite5200_fix_port_config(); - /* CPU & Port mux setup */ - mpc52xx_setup_cpu(); /* Generic */ - lite5200_setup_cpu(); /* Platorm specific */ + /* Some mpc5200 & mpc5200b related configuration */ + mpc5200_setup_xlb_arbiter(); #ifdef CONFIG_PM mpc52xx_suspend.board_suspend_prepare = lite5200_suspend_prepare; mpc52xx_suspend.board_resume_finish = lite5200_resume_finish; - mpc52xx_pm_init(); + lite5200_pm_init(); #endif #ifdef CONFIG_PCI @@ -156,20 +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 */ @@ -193,6 +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, }; |