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![Ira W. Snyder](/assets/img/avatar_default.png)
This is useful for boards which cannot be reset in the usual way for the 85xx CPU. An example is a board which can only be reset by a hardware watchdog. Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
581 lines
14 KiB
C
581 lines
14 KiB
C
/*
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* Copyright 2004,2007-2011 Freescale Semiconductor, Inc.
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* (C) Copyright 2002, 2003 Motorola Inc.
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* Xianghua Xiao (X.Xiao@motorola.com)
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*
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* (C) Copyright 2000
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <config.h>
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#include <common.h>
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#include <watchdog.h>
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#include <command.h>
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#include <fsl_esdhc.h>
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#include <asm/cache.h>
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#include <asm/io.h>
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#include <asm/mmu.h>
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#include <asm/fsl_ifc.h>
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#include <asm/fsl_law.h>
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#include <asm/fsl_lbc.h>
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#include <post.h>
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#include <asm/processor.h>
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#include <asm/fsl_ddr_sdram.h>
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* Default board reset function
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*/
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static void
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__board_reset(void)
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{
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/* Do nothing */
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}
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void board_reset(void) __attribute__((weak, alias("__board_reset")));
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int checkcpu (void)
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{
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sys_info_t sysinfo;
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uint pvr, svr;
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uint ver;
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uint major, minor;
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struct cpu_type *cpu;
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char buf1[32], buf2[32];
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#if defined(CONFIG_DDR_CLK_FREQ) || defined(CONFIG_FSL_CORENET)
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volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
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#endif /* CONFIG_FSL_CORENET */
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#ifdef CONFIG_DDR_CLK_FREQ
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u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO)
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>> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
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#else
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#ifdef CONFIG_FSL_CORENET
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u32 ddr_sync = ((gur->rcwsr[5]) & FSL_CORENET_RCWSR5_DDR_SYNC)
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>> FSL_CORENET_RCWSR5_DDR_SYNC_SHIFT;
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#else
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u32 ddr_ratio = 0;
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#endif /* CONFIG_FSL_CORENET */
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#endif /* CONFIG_DDR_CLK_FREQ */
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unsigned int i, core, nr_cores = cpu_numcores();
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u32 mask = cpu_mask();
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svr = get_svr();
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major = SVR_MAJ(svr);
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minor = SVR_MIN(svr);
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if (cpu_numcores() > 1) {
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#ifndef CONFIG_MP
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puts("Unicore software on multiprocessor system!!\n"
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"To enable mutlticore build define CONFIG_MP\n");
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#endif
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volatile ccsr_pic_t *pic = (void *)(CONFIG_SYS_MPC8xxx_PIC_ADDR);
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printf("CPU%d: ", pic->whoami);
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} else {
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puts("CPU: ");
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}
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cpu = gd->cpu;
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puts(cpu->name);
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if (IS_E_PROCESSOR(svr))
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puts("E");
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printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);
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pvr = get_pvr();
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ver = PVR_VER(pvr);
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major = PVR_MAJ(pvr);
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minor = PVR_MIN(pvr);
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printf("Core: ");
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switch(ver) {
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case PVR_VER_E500_V1:
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case PVR_VER_E500_V2:
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puts("E500");
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break;
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case PVR_VER_E500MC:
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puts("E500MC");
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break;
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case PVR_VER_E5500:
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puts("E5500");
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break;
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default:
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puts("Unknown");
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break;
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}
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printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);
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get_sys_info(&sysinfo);
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puts("Clock Configuration:");
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for_each_cpu(i, core, nr_cores, mask) {
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if (!(i & 3))
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printf ("\n ");
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printf("CPU%d:%-4s MHz, ", core,
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strmhz(buf1, sysinfo.freqProcessor[core]));
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}
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printf("\n CCB:%-4s MHz,\n", strmhz(buf1, sysinfo.freqSystemBus));
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#ifdef CONFIG_FSL_CORENET
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if (ddr_sync == 1) {
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printf(" DDR:%-4s MHz (%s MT/s data rate) "
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"(Synchronous), ",
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strmhz(buf1, sysinfo.freqDDRBus/2),
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strmhz(buf2, sysinfo.freqDDRBus));
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} else {
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printf(" DDR:%-4s MHz (%s MT/s data rate) "
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"(Asynchronous), ",
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strmhz(buf1, sysinfo.freqDDRBus/2),
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strmhz(buf2, sysinfo.freqDDRBus));
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}
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#else
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switch (ddr_ratio) {
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case 0x0:
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printf(" DDR:%-4s MHz (%s MT/s data rate), ",
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strmhz(buf1, sysinfo.freqDDRBus/2),
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strmhz(buf2, sysinfo.freqDDRBus));
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break;
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case 0x7:
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printf(" DDR:%-4s MHz (%s MT/s data rate) "
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"(Synchronous), ",
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strmhz(buf1, sysinfo.freqDDRBus/2),
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strmhz(buf2, sysinfo.freqDDRBus));
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break;
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default:
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printf(" DDR:%-4s MHz (%s MT/s data rate) "
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"(Asynchronous), ",
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strmhz(buf1, sysinfo.freqDDRBus/2),
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strmhz(buf2, sysinfo.freqDDRBus));
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break;
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}
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#endif
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#if defined(CONFIG_FSL_LBC)
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if (sysinfo.freqLocalBus > LCRR_CLKDIV) {
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printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freqLocalBus));
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} else {
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printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
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sysinfo.freqLocalBus);
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}
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#endif
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#ifdef CONFIG_CPM2
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printf("CPM: %s MHz\n", strmhz(buf1, sysinfo.freqSystemBus));
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#endif
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#ifdef CONFIG_QE
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printf(" QE:%-4s MHz\n", strmhz(buf1, sysinfo.freqQE));
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#endif
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#ifdef CONFIG_SYS_DPAA_FMAN
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for (i = 0; i < CONFIG_SYS_NUM_FMAN; i++) {
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printf(" FMAN%d: %s MHz\n", i + 1,
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strmhz(buf1, sysinfo.freqFMan[i]));
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}
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#endif
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#ifdef CONFIG_SYS_DPAA_PME
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printf(" PME: %s MHz\n", strmhz(buf1, sysinfo.freqPME));
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#endif
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puts("L1: D-cache 32 kB enabled\n I-cache 32 kB enabled\n");
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return 0;
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}
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/* ------------------------------------------------------------------------- */
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int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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/* Everything after the first generation of PQ3 parts has RSTCR */
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#if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \
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defined(CONFIG_MPC8555) || defined(CONFIG_MPC8560)
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unsigned long val, msr;
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/*
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* Initiate hard reset in debug control register DBCR0
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* Make sure MSR[DE] = 1. This only resets the core.
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*/
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msr = mfmsr ();
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msr |= MSR_DE;
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mtmsr (msr);
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val = mfspr(DBCR0);
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val |= 0x70000000;
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mtspr(DBCR0,val);
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#else
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volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
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/* Attempt board-specific reset */
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board_reset();
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/* Next try asserting HRESET_REQ */
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out_be32(&gur->rstcr, 0x2);
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udelay(100);
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#endif
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return 1;
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}
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/*
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* Get timebase clock frequency
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*/
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#ifndef CONFIG_SYS_FSL_TBCLK_DIV
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#define CONFIG_SYS_FSL_TBCLK_DIV 8
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#endif
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unsigned long get_tbclk (void)
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{
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unsigned long tbclk_div = CONFIG_SYS_FSL_TBCLK_DIV;
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return (gd->bus_clk + (tbclk_div >> 1)) / tbclk_div;
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}
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#if defined(CONFIG_WATCHDOG)
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void
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watchdog_reset(void)
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{
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int re_enable = disable_interrupts();
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reset_85xx_watchdog();
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if (re_enable) enable_interrupts();
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}
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void
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reset_85xx_watchdog(void)
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{
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/*
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* Clear TSR(WIS) bit by writing 1
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*/
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unsigned long val;
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val = mfspr(SPRN_TSR);
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val |= TSR_WIS;
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mtspr(SPRN_TSR, val);
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}
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#endif /* CONFIG_WATCHDOG */
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/*
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* Initializes on-chip MMC controllers.
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* to override, implement board_mmc_init()
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*/
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int cpu_mmc_init(bd_t *bis)
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{
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#ifdef CONFIG_FSL_ESDHC
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return fsl_esdhc_mmc_init(bis);
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#else
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return 0;
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#endif
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}
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/*
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* Print out the state of various machine registers.
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* Currently prints out LAWs, BR0/OR0 for LBC, CSPR/CSOR/Timing
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* parameters for IFC and TLBs
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*/
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void mpc85xx_reginfo(void)
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{
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print_tlbcam();
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print_laws();
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#if defined(CONFIG_FSL_LBC)
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print_lbc_regs();
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#endif
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#ifdef CONFIG_FSL_IFC
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print_ifc_regs();
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#endif
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}
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/* Common ddr init for non-corenet fsl 85xx platforms */
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#ifndef CONFIG_FSL_CORENET
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#if defined(CONFIG_SYS_RAMBOOT) && !defined(CONFIG_SYS_INIT_L2_ADDR)
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phys_size_t initdram(int board_type)
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{
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#if defined(CONFIG_SPD_EEPROM) || defined(CONFIG_DDR_SPD)
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return fsl_ddr_sdram_size();
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#else
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return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
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#endif
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}
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#else /* CONFIG_SYS_RAMBOOT */
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phys_size_t initdram(int board_type)
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{
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phys_size_t dram_size = 0;
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#if defined(CONFIG_SYS_FSL_ERRATUM_DDR_MSYNC_IN)
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{
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ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
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unsigned int x = 10;
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unsigned int i;
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/*
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* Work around to stabilize DDR DLL
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*/
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out_be32(&gur->ddrdllcr, 0x81000000);
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asm("sync;isync;msync");
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udelay(200);
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while (in_be32(&gur->ddrdllcr) != 0x81000100) {
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setbits_be32(&gur->devdisr, 0x00010000);
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for (i = 0; i < x; i++)
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;
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clrbits_be32(&gur->devdisr, 0x00010000);
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x++;
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}
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}
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#endif
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#if defined(CONFIG_SPD_EEPROM) || \
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defined(CONFIG_DDR_SPD) || \
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defined(CONFIG_SYS_DDR_RAW_TIMING)
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dram_size = fsl_ddr_sdram();
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#else
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dram_size = fixed_sdram();
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#endif
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dram_size = setup_ddr_tlbs(dram_size / 0x100000);
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dram_size *= 0x100000;
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#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
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/*
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* Initialize and enable DDR ECC.
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*/
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ddr_enable_ecc(dram_size);
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#endif
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#if defined(CONFIG_FSL_LBC)
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/* Some boards also have sdram on the lbc */
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lbc_sdram_init();
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#endif
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debug("DDR: ");
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return dram_size;
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}
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#endif /* CONFIG_SYS_RAMBOOT */
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#endif
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#if CONFIG_POST & CONFIG_SYS_POST_MEMORY
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/* Board-specific functions defined in each board's ddr.c */
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void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
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unsigned int ctrl_num);
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void read_tlbcam_entry(int idx, u32 *valid, u32 *tsize, unsigned long *epn,
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phys_addr_t *rpn);
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unsigned int
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setup_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg);
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void clear_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg);
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static void dump_spd_ddr_reg(void)
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{
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int i, j, k, m;
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u8 *p_8;
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u32 *p_32;
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ccsr_ddr_t *ddr[CONFIG_NUM_DDR_CONTROLLERS];
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generic_spd_eeprom_t
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spd[CONFIG_NUM_DDR_CONTROLLERS][CONFIG_DIMM_SLOTS_PER_CTLR];
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for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++)
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fsl_ddr_get_spd(spd[i], i);
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puts("SPD data of all dimms (zero vaule is omitted)...\n");
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puts("Byte (hex) ");
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k = 1;
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for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
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for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++)
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printf("Dimm%d ", k++);
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}
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puts("\n");
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for (k = 0; k < sizeof(generic_spd_eeprom_t); k++) {
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m = 0;
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printf("%3d (0x%02x) ", k, k);
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for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
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for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++) {
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p_8 = (u8 *) &spd[i][j];
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if (p_8[k]) {
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printf("0x%02x ", p_8[k]);
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m++;
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} else
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puts(" ");
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}
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}
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if (m)
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puts("\n");
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else
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puts("\r");
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}
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for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
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switch (i) {
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case 0:
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ddr[i] = (void *)CONFIG_SYS_MPC85xx_DDR_ADDR;
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break;
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#ifdef CONFIG_SYS_MPC85xx_DDR2_ADDR
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case 1:
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ddr[i] = (void *)CONFIG_SYS_MPC85xx_DDR2_ADDR;
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break;
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#endif
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default:
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printf("%s unexpected controller number = %u\n",
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__func__, i);
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return;
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}
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}
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printf("DDR registers dump for all controllers "
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"(zero vaule is omitted)...\n");
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puts("Offset (hex) ");
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for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++)
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printf(" Base + 0x%04x", (u32)ddr[i] & 0xFFFF);
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puts("\n");
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for (k = 0; k < sizeof(ccsr_ddr_t)/4; k++) {
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m = 0;
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printf("%6d (0x%04x)", k * 4, k * 4);
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for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
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p_32 = (u32 *) ddr[i];
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if (p_32[k]) {
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printf(" 0x%08x", p_32[k]);
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m++;
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} else
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puts(" ");
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}
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if (m)
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puts("\n");
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else
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puts("\r");
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}
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puts("\n");
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}
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/* invalid the TLBs for DDR and setup new ones to cover p_addr */
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static int reset_tlb(phys_addr_t p_addr, u32 size, phys_addr_t *phys_offset)
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{
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u32 vstart = CONFIG_SYS_DDR_SDRAM_BASE;
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unsigned long epn;
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u32 tsize, valid, ptr;
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int ddr_esel;
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clear_ddr_tlbs_phys(p_addr, size>>20);
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/* Setup new tlb to cover the physical address */
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setup_ddr_tlbs_phys(p_addr, size>>20);
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ptr = vstart;
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ddr_esel = find_tlb_idx((void *)ptr, 1);
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if (ddr_esel != -1) {
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read_tlbcam_entry(ddr_esel, &valid, &tsize, &epn, phys_offset);
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} else {
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printf("TLB error in function %s\n", __func__);
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return -1;
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}
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return 0;
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}
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/*
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* slide the testing window up to test another area
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* for 32_bit system, the maximum testable memory is limited to
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|
* CONFIG_MAX_MEM_MAPPED
|
|
*/
|
|
int arch_memory_test_advance(u32 *vstart, u32 *size, phys_addr_t *phys_offset)
|
|
{
|
|
phys_addr_t test_cap, p_addr;
|
|
phys_size_t p_size = min(gd->ram_size, CONFIG_MAX_MEM_MAPPED);
|
|
|
|
#if !defined(CONFIG_PHYS_64BIT) || \
|
|
!defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS) || \
|
|
(CONFIG_SYS_INIT_RAM_ADDR_PHYS < 0x100000000ull)
|
|
test_cap = p_size;
|
|
#else
|
|
test_cap = gd->ram_size;
|
|
#endif
|
|
p_addr = (*vstart) + (*size) + (*phys_offset);
|
|
if (p_addr < test_cap - 1) {
|
|
p_size = min(test_cap - p_addr, CONFIG_MAX_MEM_MAPPED);
|
|
if (reset_tlb(p_addr, p_size, phys_offset) == -1)
|
|
return -1;
|
|
*vstart = CONFIG_SYS_DDR_SDRAM_BASE;
|
|
*size = (u32) p_size;
|
|
printf("Testing 0x%08llx - 0x%08llx\n",
|
|
(u64)(*vstart) + (*phys_offset),
|
|
(u64)(*vstart) + (*phys_offset) + (*size) - 1);
|
|
} else
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* initialization for testing area */
|
|
int arch_memory_test_prepare(u32 *vstart, u32 *size, phys_addr_t *phys_offset)
|
|
{
|
|
phys_size_t p_size = min(gd->ram_size, CONFIG_MAX_MEM_MAPPED);
|
|
|
|
*vstart = CONFIG_SYS_DDR_SDRAM_BASE;
|
|
*size = (u32) p_size; /* CONFIG_MAX_MEM_MAPPED < 4G */
|
|
*phys_offset = 0;
|
|
|
|
#if !defined(CONFIG_PHYS_64BIT) || \
|
|
!defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS) || \
|
|
(CONFIG_SYS_INIT_RAM_ADDR_PHYS < 0x100000000ull)
|
|
if (gd->ram_size > CONFIG_MAX_MEM_MAPPED) {
|
|
puts("Cannot test more than ");
|
|
print_size(CONFIG_MAX_MEM_MAPPED,
|
|
" without proper 36BIT support.\n");
|
|
}
|
|
#endif
|
|
printf("Testing 0x%08llx - 0x%08llx\n",
|
|
(u64)(*vstart) + (*phys_offset),
|
|
(u64)(*vstart) + (*phys_offset) + (*size) - 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* invalid TLBs for DDR and remap as normal after testing */
|
|
int arch_memory_test_cleanup(u32 *vstart, u32 *size, phys_addr_t *phys_offset)
|
|
{
|
|
unsigned long epn;
|
|
u32 tsize, valid, ptr;
|
|
phys_addr_t rpn = 0;
|
|
int ddr_esel;
|
|
|
|
/* disable the TLBs for this testing */
|
|
ptr = *vstart;
|
|
|
|
while (ptr < (*vstart) + (*size)) {
|
|
ddr_esel = find_tlb_idx((void *)ptr, 1);
|
|
if (ddr_esel != -1) {
|
|
read_tlbcam_entry(ddr_esel, &valid, &tsize, &epn, &rpn);
|
|
disable_tlb(ddr_esel);
|
|
}
|
|
ptr += TSIZE_TO_BYTES(tsize);
|
|
}
|
|
|
|
puts("Remap DDR ");
|
|
setup_ddr_tlbs(gd->ram_size>>20);
|
|
puts("\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
void arch_memory_failure_handle(void)
|
|
{
|
|
dump_spd_ddr_reg();
|
|
}
|
|
#endif
|