diff options
author | Paul Mackerras <paulus@samba.org> | 2008-06-09 14:01:46 +1000 |
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committer | Paul Mackerras <paulus@samba.org> | 2008-06-10 21:40:22 +1000 |
commit | 917f0af9e5a9ceecf9e72537fabb501254ba321d (patch) | |
tree | 1ef207755c6d83ce4af93ef2b5e4645eebd65886 /arch/ppc/syslib/mpc52xx_setup.c | |
parent | 0f3d6bcd391b058c619fc30e8022e8a29fbf4bef (diff) |
powerpc: Remove arch/ppc and include/asm-ppc
All the maintained platforms are now in arch/powerpc, so the old
arch/ppc stuff can now go away.
Acked-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Becky Bruce <becky.bruce@freescale.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Jochen Friedrich <jochen@scram.de>
Acked-by: John Linn <john.linn@xilinx.com>
Acked-by: Jon Loeliger <jdl@freescale.com>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Scott Wood <scottwood@freescale.com>
Acked-by: Sean MacLennan <smaclennan@pikatech.com>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/ppc/syslib/mpc52xx_setup.c')
-rw-r--r-- | arch/ppc/syslib/mpc52xx_setup.c | 313 |
1 files changed, 0 insertions, 313 deletions
diff --git a/arch/ppc/syslib/mpc52xx_setup.c b/arch/ppc/syslib/mpc52xx_setup.c deleted file mode 100644 index ab0cf4ced9e..00000000000 --- a/arch/ppc/syslib/mpc52xx_setup.c +++ /dev/null @@ -1,313 +0,0 @@ -/* - * Common code for the boards based on Freescale MPC52xx embedded CPU. - * - * - * Maintainer : Sylvain Munaut <tnt@246tNt.com> - * - * Support for other bootloaders than UBoot by Dale Farnsworth - * <dfarnsworth@mvista.com> - * - * Copyright (C) 2004 Sylvain Munaut <tnt@246tNt.com> - * Copyright (C) 2003 Montavista Software, Inc - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - */ - - -#include <linux/spinlock.h> -#include <asm/io.h> -#include <asm/time.h> -#include <asm/mpc52xx.h> -#include <asm/mpc52xx_psc.h> -#include <asm/pgtable.h> -#include <asm/ppcboot.h> - -#include <syslib/mpc52xx_pci.h> - -extern bd_t __res; - -static int core_mult[] = { /* CPU Frequency multiplier, taken */ - 0, 0, 0, 10, 20, 20, 25, 45, /* from the datasheet used to compute */ - 30, 55, 40, 50, 0, 60, 35, 0, /* CPU frequency from XLB freq and */ - 30, 25, 65, 10, 70, 20, 75, 45, /* external jumper config */ - 0, 55, 40, 50, 80, 60, 35, 0 -}; - -void -mpc52xx_restart(char *cmd) -{ - struct mpc52xx_gpt __iomem *gpt0 = MPC52xx_VA(MPC52xx_GPTx_OFFSET(0)); - - local_irq_disable(); - - /* Turn on the watchdog and wait for it to expire. It effectively - does a reset */ - out_be32(&gpt0->count, 0x000000ff); - out_be32(&gpt0->mode, 0x00009004); - - while (1); -} - -void -mpc52xx_halt(void) -{ - local_irq_disable(); - - while (1); -} - -void -mpc52xx_power_off(void) -{ - /* By default we don't have any way of shut down. - If a specific board wants to, it can set the power down - code to any hardware implementation dependent code */ - mpc52xx_halt(); -} - - -void __init -mpc52xx_set_bat(void) -{ - /* Set BAT 2 to map the 0xf0000000 area */ - /* This mapping is used during mpc52xx_progress, - * mpc52xx_find_end_of_memory, and UARTs/GPIO access for debug - */ - mb(); - mtspr(SPRN_DBAT2U, 0xf0001ffe); - mtspr(SPRN_DBAT2L, 0xf000002a); - mb(); -} - -void __init -mpc52xx_map_io(void) -{ - /* Here we map the MBAR and the whole upper zone. MBAR is only - 64k but we can't map only 64k with BATs. Map the whole - 0xf0000000 range is ok and helps eventual lpb devices placed there */ - io_block_mapping( - MPC52xx_MBAR_VIRT, MPC52xx_MBAR, 0x10000000, _PAGE_IO); -} - - -#ifdef CONFIG_SERIAL_TEXT_DEBUG -#ifndef MPC52xx_PF_CONSOLE_PORT -#error "mpc52xx PSC for console not selected" -#endif - -static void -mpc52xx_psc_putc(struct mpc52xx_psc __iomem *psc, unsigned char c) -{ - while (!(in_be16(&psc->mpc52xx_psc_status) & - MPC52xx_PSC_SR_TXRDY)); - out_8(&psc->mpc52xx_psc_buffer_8, c); -} - -void -mpc52xx_progress(char *s, unsigned short hex) -{ - char c; - struct mpc52xx_psc __iomem *psc; - - psc = MPC52xx_VA(MPC52xx_PSCx_OFFSET(MPC52xx_PF_CONSOLE_PORT)); - - while ((c = *s++) != 0) { - if (c == '\n') - mpc52xx_psc_putc(psc, '\r'); - mpc52xx_psc_putc(psc, c); - } - - mpc52xx_psc_putc(psc, '\r'); - mpc52xx_psc_putc(psc, '\n'); -} - -#endif /* CONFIG_SERIAL_TEXT_DEBUG */ - - -unsigned long __init -mpc52xx_find_end_of_memory(void) -{ - u32 ramsize = __res.bi_memsize; - - /* - * if bootloader passed a memsize, just use it - * else get size from sdram config registers - */ - if (ramsize == 0) { - struct mpc52xx_mmap_ctl __iomem *mmap_ctl; - u32 sdram_config_0, sdram_config_1; - - /* Temp BAT2 mapping active when this is called ! */ - mmap_ctl = MPC52xx_VA(MPC52xx_MMAP_CTL_OFFSET); - - sdram_config_0 = in_be32(&mmap_ctl->sdram0); - sdram_config_1 = in_be32(&mmap_ctl->sdram1); - - if ((sdram_config_0 & 0x1f) >= 0x13) - ramsize = 1 << ((sdram_config_0 & 0xf) + 17); - - if (((sdram_config_1 & 0x1f) >= 0x13) && - ((sdram_config_1 & 0xfff00000) == ramsize)) - ramsize += 1 << ((sdram_config_1 & 0xf) + 17); - } - - return ramsize; -} - -void __init -mpc52xx_calibrate_decr(void) -{ - int current_time, previous_time; - int tbl_start, tbl_end; - unsigned int xlbfreq, cpufreq, ipbfreq, pcifreq, divisor; - - xlbfreq = __res.bi_busfreq; - /* if bootloader didn't pass bus frequencies, calculate them */ - if (xlbfreq == 0) { - /* Get RTC & Clock manager modules */ - struct mpc52xx_rtc __iomem *rtc; - struct mpc52xx_cdm __iomem *cdm; - - rtc = ioremap(MPC52xx_PA(MPC52xx_RTC_OFFSET), MPC52xx_RTC_SIZE); - cdm = ioremap(MPC52xx_PA(MPC52xx_CDM_OFFSET), MPC52xx_CDM_SIZE); - - if ((rtc==NULL) || (cdm==NULL)) - panic("Can't ioremap RTC/CDM while computing bus freq"); - - /* Count bus clock during 1/64 sec */ - out_be32(&rtc->dividers, 0x8f1f0000); /* Set RTC 64x faster */ - previous_time = in_be32(&rtc->time); - while ((current_time = in_be32(&rtc->time)) == previous_time) ; - tbl_start = get_tbl(); - previous_time = current_time; - while ((current_time = in_be32(&rtc->time)) == previous_time) ; - tbl_end = get_tbl(); - out_be32(&rtc->dividers, 0xffff0000); /* Restore RTC */ - - /* Compute all frequency from that & CDM settings */ - xlbfreq = (tbl_end - tbl_start) << 8; - cpufreq = (xlbfreq * core_mult[in_be32(&cdm->rstcfg)&0x1f])/10; - ipbfreq = (in_8(&cdm->ipb_clk_sel) & 1) ? - xlbfreq / 2 : xlbfreq; - switch (in_8(&cdm->pci_clk_sel) & 3) { - case 0: - pcifreq = ipbfreq; - break; - case 1: - pcifreq = ipbfreq / 2; - break; - default: - pcifreq = xlbfreq / 4; - break; - } - __res.bi_busfreq = xlbfreq; - __res.bi_intfreq = cpufreq; - __res.bi_ipbfreq = ipbfreq; - __res.bi_pcifreq = pcifreq; - - /* Release mapping */ - iounmap(rtc); - iounmap(cdm); - } - - divisor = 4; - - tb_ticks_per_jiffy = xlbfreq / HZ / divisor; - tb_to_us = mulhwu_scale_factor(xlbfreq / divisor, 1000000); -} - - -void __init -mpc52xx_setup_cpu(void) -{ - struct mpc52xx_cdm __iomem *cdm; - struct mpc52xx_xlb __iomem *xlb; - - /* Map zones */ - cdm = ioremap(MPC52xx_PA(MPC52xx_CDM_OFFSET), MPC52xx_CDM_SIZE); - xlb = ioremap(MPC52xx_PA(MPC52xx_XLB_OFFSET), MPC52xx_XLB_SIZE); - - if (!cdm || !xlb) { - printk(KERN_ERR __FILE__ ": " - "Error while mapping CDM/XLB during " - "mpc52xx_setup_cpu\n"); - goto unmap_regs; - } - - /* 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); - - /* Configure the XLB Arbiter priorities */ - out_be32(&xlb->master_pri_enable, 0xff); - out_be32(&xlb->master_priority, 0x11111111); - - /* Enable ram snooping for 1GB window */ - out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_SNOOP); - out_be32(&xlb->snoop_window, MPC52xx_PCI_TARGET_MEM | 0x1d); - - /* Disable XLB pipelining */ - /* (cfr errata 292. We could do this only just before ATA PIO - transaction and re-enable it after ...) */ - out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_PLDIS); - - /* Unmap reg zone */ -unmap_regs: - if (cdm) iounmap(cdm); - if (xlb) iounmap(xlb); -} - - -int mpc52xx_match_psc_function(int psc_idx, const char *func) -{ - struct mpc52xx_psc_func *cf = mpc52xx_psc_functions; - - while ((cf->id != -1) && (cf->func != NULL)) { - if ((cf->id == psc_idx) && !strcmp(cf->func,func)) - return 1; - cf++; - } - - return 0; -} - -int mpc52xx_set_psc_clkdiv(int psc_id, int clkdiv) -{ - static DEFINE_SPINLOCK(lock); - struct mpc52xx_cdm __iomem *cdm; - unsigned long flags; - u16 mclken_div; - u16 __iomem *reg; - u32 mask; - - cdm = ioremap(MPC52xx_PA(MPC52xx_CDM_OFFSET), MPC52xx_CDM_SIZE); - if (!cdm) { - printk(KERN_ERR __FILE__ ": Error mapping CDM\n"); - return -ENODEV; - } - - mclken_div = 0x8000 | (clkdiv & 0x1FF); - switch (psc_id) { - case 1: reg = &cdm->mclken_div_psc1; mask = 0x20; break; - case 2: reg = &cdm->mclken_div_psc2; mask = 0x40; break; - case 3: reg = &cdm->mclken_div_psc3; mask = 0x80; break; - case 6: reg = &cdm->mclken_div_psc6; mask = 0x10; break; - default: - return -ENODEV; - } - - /* Set the rate and enable the clock */ - spin_lock_irqsave(&lock, flags); - out_be16(reg, mclken_div); - out_be32(&cdm->clk_enables, in_be32(&cdm->clk_enables) | mask); - spin_unlock_irqrestore(&lock, flags); - - iounmap(cdm); - return 0; -} |