arch/powerpc/cpu/mpc85xx/cpu.c - platform/external/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2004,2007-2011 Freescale Semiconductor, Inc.
  * (C) Copyright 2002, 2003 Motorola Inc.
  * Xianghua Xiao (X.Xiao@motorola.com)
  *
  * (C) Copyright 2000
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  */

 #include <config.h>
 #include <common.h>
 #include <cpu_func.h>
 #include <clock_legacy.h>
 #include <display_options.h>
 #include <init.h>
 #include <irq_func.h>
 #include <log.h>
 #include <time.h>
 #include <vsprintf.h>
 #include <watchdog.h>
 #include <command.h>
 #include <fsl_esdhc.h>
 #include <asm/cache.h>
 #include <asm/global_data.h>
 #include <asm/io.h>
 #include <asm/mmu.h>
 #include <fsl_ifc.h>
 #include <asm/fsl_law.h>
 #include <asm/fsl_lbc.h>
 #include <post.h>
 #include <asm/processor.h>
 #include <fsl_ddr_sdram.h>
 #include <asm/ppc.h>
 #include <linux/delay.h>

 DECLARE_GLOBAL_DATA_PTR;

 /*
  * Default board reset function
  */
 static void
 __board_reset(void)
 {
 	/* Do nothing */
 }
 void board_reset_prepare(void) __attribute__((weak, alias("__board_reset")));
 void board_reset(void) __attribute__((weak, alias("__board_reset")));
 void board_reset_last(void) __attribute__((weak, alias("__board_reset")));

 int checkcpu (void)
 {
 	sys_info_t sysinfo;
 	uint pvr, svr;
 	uint ver;
 	uint major, minor;
 	struct cpu_type *cpu;
 	char buf1[32], buf2[32];
 #if defined(CONFIG_DYNAMIC_DDR_CLK_FREQ) || \
 	defined(CONFIG_STATIC_DDR_CLK_FREQ) || defined(CONFIG_FSL_CORENET)
 	ccsr_gur_t __iomem *gur =
 		(void __iomem *)(CFG_SYS_MPC85xx_GUTS_ADDR);
 #endif

 	/*
 	 * Cornet platforms use ddr sync bit in RCW to indicate sync vs async
 	 * mode. Previous platform use ddr ratio to do the same. This
 	 * information is only for display here.
 	 */
 #ifdef CONFIG_FSL_CORENET
 #ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
 	u32 ddr_sync = 0;	/* only async mode is supported */
 #else
 	u32 ddr_sync = ((gur->rcwsr[5]) & FSL_CORENET_RCWSR5_DDR_SYNC)
 		>> FSL_CORENET_RCWSR5_DDR_SYNC_SHIFT;
 #endif /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */
 #else	/* CONFIG_FSL_CORENET */
 #if defined(CONFIG_DYNAMIC_DDR_CLK_FREQ) || defined(CONFIG_STATIC_DDR_CLK_FREQ)
 	u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO)
 		>> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
 #else
 	u32 ddr_ratio = 0;
 #endif /* CONFIG_DYNAMIC_DDR_CLK_FREQ || CONFIG_STATIC_DDR_CLK_FREQ */
 #endif /* CONFIG_FSL_CORENET */

 	unsigned int i, core, nr_cores = cpu_numcores();
 	u32 mask = cpu_mask();

 #ifdef CONFIG_HETROGENOUS_CLUSTERS
 	unsigned int j, dsp_core, dsp_numcores = cpu_num_dspcores();
 	u32 dsp_mask = cpu_dsp_mask();
 #endif

 	svr = get_svr();
 	major = SVR_MAJ(svr);
 	minor = SVR_MIN(svr);

 #if defined(CONFIG_SYS_FSL_QORIQ_CHASSIS2) && defined(CONFIG_E6500)
 	if (SVR_SOC_VER(svr) == SVR_T4080) {
 		ccsr_rcpm_t *rcpm =
 			(void __iomem *)(CFG_SYS_FSL_CORENET_RCPM_ADDR);

 		setbits_be32(&gur->devdisr2, FSL_CORENET_DEVDISR2_DTSEC1_6 ||
 			     FSL_CORENET_DEVDISR2_DTSEC1_9);
 		setbits_be32(&gur->devdisr3, FSL_CORENET_DEVDISR3_PCIE3);
 		setbits_be32(&gur->devdisr5, FSL_CORENET_DEVDISR5_DDR3);

 		/* It needs SW to disable core4~7 as HW design sake on T4080 */
 		for (i = 4; i < 8; i++)
 			cpu_disable(i);

 		/* request core4~7 into PH20 state, prior to entering PCL10
 		 * state, all cores in cluster should be placed in PH20 state.
 		 */
 		setbits_be32(&rcpm->pcph20setr, 0xf0);

 		/* put the 2nd cluster into PCL10 state */
 		setbits_be32(&rcpm->clpcl10setr, 1 << 1);
 	}
 #endif

 	if (cpu_numcores() > 1) {
 #ifndef CONFIG_MP
 		puts("Unicore software on multiprocessor system!!\n"
 		     "To enable mutlticore build define CONFIG_MP\n");
 #endif
 		volatile ccsr_pic_t *pic = (void *)(CFG_SYS_MPC8xxx_PIC_ADDR);
 		printf("CPU%d:  ", pic->whoami);
 	} else {
 		puts("CPU:   ");
 	}

 	cpu = gd->arch.cpu;

 	puts(cpu->name);
 	if (IS_E_PROCESSOR(svr))
 		puts("E");

 	printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);

 	pvr = get_pvr();
 	ver = PVR_VER(pvr);
 	major = PVR_MAJ(pvr);
 	minor = PVR_MIN(pvr);

 	printf("Core:  ");
 	switch(ver) {
 	case PVR_VER_E500_V1:
 		puts("e500v1");
 		break;
 	case PVR_VER_E500_V2:
 		puts("e500v2");
 		break;
 	case PVR_VER_E500MC:
 		puts("e500mc");
 		break;
 	case PVR_VER_E5500:
 		puts("e5500");
 		break;
 	case PVR_VER_E6500:
 		puts("e6500");
 		break;
 	default:
 		puts("Unknown");
 		break;
 	}

 	printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);

 	if (nr_cores > CONFIG_MAX_CPUS) {
 		panic("\nUnexpected number of cores: %d, max is %d\n",
 			nr_cores, CONFIG_MAX_CPUS);
 	}

 	get_sys_info(&sysinfo);

 #ifdef CONFIG_SYS_FSL_SINGLE_SOURCE_CLK
 	if (sysinfo.diff_sysclk == 1)
 		puts("Single Source Clock Configuration\n");
 #endif

 	puts("Clock Configuration:");
 	for_each_cpu(i, core, nr_cores, mask) {
 		if (!(i & 3))
 			printf ("\n       ");
 		printf("CPU%d:%-4s MHz, ", core,
 			strmhz(buf1, sysinfo.freq_processor[core]));
 	}

 #ifdef CONFIG_HETROGENOUS_CLUSTERS
 	for_each_cpu(j, dsp_core, dsp_numcores, dsp_mask) {
 		if (!(j & 3))
 			printf("\n       ");
 		printf("DSP CPU%d:%-4s MHz, ", j,
 		       strmhz(buf1, sysinfo.freq_processor_dsp[dsp_core]));
 	}
 #endif

 	printf("\n       CCB:%-4s MHz,", strmhz(buf1, sysinfo.freq_systembus));
 	printf("\n");

 #ifdef CONFIG_FSL_CORENET
 	if (ddr_sync == 1) {
 		printf("       DDR:%-4s MHz (%s MT/s data rate) "
 			"(Synchronous), ",
 			strmhz(buf1, sysinfo.freq_ddrbus/2),
 			strmhz(buf2, sysinfo.freq_ddrbus));
 	} else {
 		printf("       DDR:%-4s MHz (%s MT/s data rate) "
 			"(Asynchronous), ",
 			strmhz(buf1, sysinfo.freq_ddrbus/2),
 			strmhz(buf2, sysinfo.freq_ddrbus));
 	}
 #else
 	switch (ddr_ratio) {
 	case 0x0:
 		printf("       DDR:%-4s MHz (%s MT/s data rate), ",
 			strmhz(buf1, sysinfo.freq_ddrbus/2),
 			strmhz(buf2, sysinfo.freq_ddrbus));
 		break;
 	case 0x7:
 		printf("       DDR:%-4s MHz (%s MT/s data rate) "
 			"(Synchronous), ",
 			strmhz(buf1, sysinfo.freq_ddrbus/2),
 			strmhz(buf2, sysinfo.freq_ddrbus));
 		break;
 	default:
 		printf("       DDR:%-4s MHz (%s MT/s data rate) "
 			"(Asynchronous), ",
 			strmhz(buf1, sysinfo.freq_ddrbus/2),
 			strmhz(buf2, sysinfo.freq_ddrbus));
 		break;
 	}
 #endif

 #if defined(CONFIG_FSL_LBC)
 	if (sysinfo.freq_localbus > LCRR_CLKDIV) {
 		printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freq_localbus));
 	} else {
 		printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
 		       sysinfo.freq_localbus);
 	}
 #endif

 #if defined(CONFIG_FSL_IFC)
 	printf("IFC:%-4s MHz\n", strmhz(buf1, sysinfo.freq_localbus));
 #endif

 #ifdef CONFIG_QE
 	printf("       QE:%-4s MHz\n", strmhz(buf1, sysinfo.freq_qe));
 #endif

 #if defined(CONFIG_SYS_CPRI)
 	printf("       ");
 	printf("CPRI:%-4s MHz", strmhz(buf1, sysinfo.freq_cpri));
 #endif

 #if defined(CONFIG_SYS_MAPLE)
 	printf("\n       ");
 	printf("MAPLE:%-4s MHz, ", strmhz(buf1, sysinfo.freq_maple));
 	printf("MAPLE-ULB:%-4s MHz, ", strmhz(buf1, sysinfo.freq_maple_ulb));
 	printf("MAPLE-eTVPE:%-4s MHz\n",
 	       strmhz(buf1, sysinfo.freq_maple_etvpe));
 #endif

 #ifdef CONFIG_SYS_DPAA_FMAN
 	for (i = 0; i < CFG_SYS_NUM_FMAN; i++) {
 		printf("       FMAN%d: %s MHz\n", i + 1,
 			strmhz(buf1, sysinfo.freq_fman[i]));
 	}
 #endif

 #ifdef CONFIG_SYS_DPAA_QBMAN
 	printf("       QMAN:  %s MHz\n", strmhz(buf1, sysinfo.freq_qman));
 #endif

 #ifdef CONFIG_SYS_DPAA_PME
 	printf("       PME:   %s MHz\n", strmhz(buf1, sysinfo.freq_pme));
 #endif

 	puts("L1:    D-cache 32 KiB enabled\n       I-cache 32 KiB enabled\n");

 #ifdef CONFIG_FSL_CORENET
 	/* Display the RCW, so that no one gets confused as to what RCW
 	 * we're actually using for this boot.
 	 */
 	puts("Reset Configuration Word (RCW):");
 	for (i = 0; i < ARRAY_SIZE(gur->rcwsr); i++) {
 		u32 rcw = in_be32(&gur->rcwsr[i]);

 		if ((i % 4) == 0)
 			printf("\n       %08x:", i * 4);
 		printf(" %08x", rcw);
 	}
 	puts("\n");
 #endif

 	return 0;
 }


 /* ------------------------------------------------------------------------- */

 int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 /* Everything after the first generation of PQ3 parts has RSTCR */
 #if defined(CONFIG_ARCH_MPC8540) || defined(CONFIG_ARCH_MPC8560)
 	unsigned long val, msr;

 	/*
 	 * Initiate hard reset in debug control register DBCR0
 	 * Make sure MSR[DE] = 1.  This only resets the core.
 	 */
 	msr = mfmsr ();
 	msr |= MSR_DE;
 	mtmsr (msr);

 	val = mfspr(DBCR0);
 	val |= 0x70000000;
 	mtspr(DBCR0,val);
 #else
 	volatile ccsr_gur_t *gur = (void *)(CFG_SYS_MPC85xx_GUTS_ADDR);

 	/* Call board-specific preparation for reset */
 	board_reset_prepare();

 	/* Attempt board-specific reset */
 	board_reset();

 	/* Next try asserting HRESET_REQ */
 	out_be32(&gur->rstcr, 0x2);
 	udelay(100);

 	/* Attempt last-stage board-specific reset */
 	board_reset_last();
 #endif

 	return 1;
 }


 /*
  * Get timebase clock frequency
  */
 __weak unsigned long get_tbclk(void)
 {
 	unsigned long tbclk_div = CONFIG_SYS_FSL_TBCLK_DIV;

 	return (gd->bus_clk + (tbclk_div >> 1)) / tbclk_div;
 }


 #ifndef CONFIG_WDT
 #if defined(CONFIG_WATCHDOG)
 #define WATCHDOG_MASK (TCR_WP(63) | TCR_WRC(3) | TCR_WIE)
 void
 init_85xx_watchdog(void)
 {
 	mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WATCHDOG_MASK) |
 	      TCR_WP(CFG_WATCHDOG_PRESC) | TCR_WRC(CFG_WATCHDOG_RC));
 }

 void
 reset_85xx_watchdog(void)
 {
 	/*
 	 * Clear TSR(WIS) bit by writing 1
 	 */
 	mtspr(SPRN_TSR, TSR_WIS);
 }

 void
 watchdog_reset(void)
 {
 	int re_enable = disable_interrupts();

 	reset_85xx_watchdog();
 	if (re_enable)
 		enable_interrupts();
 }
 #endif	/* CONFIG_WATCHDOG */
 #endif

 /*
  * Initializes on-chip MMC controllers.
  * to override, implement board_mmc_init()
  */
 int cpu_mmc_init(struct bd_info *bis)
 {
 #ifdef CONFIG_FSL_ESDHC
 	return fsl_esdhc_mmc_init(bis);
 #else
 	return 0;
 #endif
 }

 /*
  * Print out the state of various machine registers.
  * Currently prints out LAWs, BR0/OR0 for LBC, CSPR/CSOR/Timing
  * parameters for IFC and TLBs
  */
 void print_reginfo(void)
 {
 	print_tlbcam();
 #ifdef CONFIG_FSL_LAW
 	print_laws();
 #endif
 #if defined(CONFIG_FSL_LBC)
 	print_lbc_regs();
 #endif
 #ifdef CONFIG_FSL_IFC
 	print_ifc_regs();
 #endif

 }

 /* Common ddr init for non-corenet fsl 85xx platforms */
 #ifndef CONFIG_FSL_CORENET
 #if (defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_SPL)) && \
 	!defined(CFG_SYS_INIT_L2_ADDR)
 int dram_init(void)
 {
 #if defined(CONFIG_SPD_EEPROM) || defined(CONFIG_DDR_SPD) || \
 	defined(CONFIG_ARCH_QEMU_E500)
 	gd->ram_size = fsl_ddr_sdram_size();
 #else
 	gd->ram_size = (phys_size_t)CFG_SYS_SDRAM_SIZE * 1024 * 1024;
 #endif

 	return 0;
 }
 #else /* CONFIG_SYS_RAMBOOT */
 int dram_init(void)
 {
 	phys_size_t dram_size = 0;

 #if defined(CONFIG_SYS_FSL_ERRATUM_DDR_MSYNC_IN)
 	{
 		ccsr_gur_t *gur = (void *)(CFG_SYS_MPC85xx_GUTS_ADDR);
 		unsigned int x = 10;
 		unsigned int i;

 		/*
 		 * Work around to stabilize DDR DLL
 		 */
 		out_be32(&gur->ddrdllcr, 0x81000000);
 		asm("sync;isync;msync");
 		udelay(200);
 		while (in_be32(&gur->ddrdllcr) != 0x81000100) {
 			setbits_be32(&gur->devdisr, 0x00010000);
 			for (i = 0; i < x; i++)
 				;
 			clrbits_be32(&gur->devdisr, 0x00010000);
 			x++;
 		}
 	}
 #endif

 #if	defined(CONFIG_SPD_EEPROM)	|| \
 	defined(CONFIG_DDR_SPD)		|| \
 	defined(CONFIG_SYS_DDR_RAW_TIMING)
 	dram_size = fsl_ddr_sdram();
 #else
 	dram_size = fixed_sdram();
 #endif
 	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
 	dram_size *= 0x100000;

 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
 	/*
 	 * Initialize and enable DDR ECC.
 	 */
 	ddr_enable_ecc(dram_size);
 #endif

 #if defined(CONFIG_FSL_LBC)
 	/* Some boards also have sdram on the lbc */
 	lbc_sdram_init();
 #endif

 	debug("DDR: ");
 	gd->ram_size = dram_size;

 	return 0;
 }
 #endif /* CONFIG_SYS_RAMBOOT */
 #endif

 #if CFG_POST & CFG_SYS_POST_MEMORY

 /* Board-specific functions defined in each board's ddr.c */
 void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
 	unsigned int ctrl_num, unsigned int dimm_slots_per_ctrl);
 void read_tlbcam_entry(int idx, u32 *valid, u32 *tsize, unsigned long *epn,
 		       phys_addr_t *rpn);
 unsigned int
 	setup_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg);

 void clear_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg);

 static void dump_spd_ddr_reg(void)
 {
 	int i, j, k, m;
 	u8 *p_8;
 	u32 *p_32;
 	struct ccsr_ddr __iomem *ddr[CONFIG_SYS_NUM_DDR_CTLRS];
 	generic_spd_eeprom_t
 		spd[CONFIG_SYS_NUM_DDR_CTLRS][CONFIG_DIMM_SLOTS_PER_CTLR];

 	for (i = 0; i < CONFIG_SYS_NUM_DDR_CTLRS; i++)
 		fsl_ddr_get_spd(spd[i], i, CONFIG_DIMM_SLOTS_PER_CTLR);

 	puts("SPD data of all dimms (zero value is omitted)...\n");
 	puts("Byte (hex)  ");
 	k = 1;
 	for (i = 0; i < CONFIG_SYS_NUM_DDR_CTLRS; i++) {
 		for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++)
 			printf("Dimm%d ", k++);
 	}
 	puts("\n");
 	for (k = 0; k < sizeof(generic_spd_eeprom_t); k++) {
 		m = 0;
 		printf("%3d (0x%02x)  ", k, k);
 		for (i = 0; i < CONFIG_SYS_NUM_DDR_CTLRS; i++) {
 			for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++) {
 				p_8 = (u8 *) &spd[i][j];
 				if (p_8[k]) {
 					printf("0x%02x  ", p_8[k]);
 					m++;
 				} else
 					puts("      ");
 			}
 		}
 		if (m)
 			puts("\n");
 		else
 			puts("\r");
 	}

 	for (i = 0; i < CONFIG_SYS_NUM_DDR_CTLRS; i++) {
 		switch (i) {
 		case 0:
 			ddr[i] = (void *)CFG_SYS_FSL_DDR_ADDR;
 			break;
 #if defined(CFG_SYS_FSL_DDR2_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 1)
 		case 1:
 			ddr[i] = (void *)CFG_SYS_FSL_DDR2_ADDR;
 			break;
 #endif
 #if defined(CFG_SYS_FSL_DDR3_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 2)
 		case 2:
 			ddr[i] = (void *)CFG_SYS_FSL_DDR3_ADDR;
 			break;
 #endif
 #if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 3)
 		case 3:
 			ddr[i] = (void *)CONFIG_SYS_FSL_DDR4_ADDR;
 			break;
 #endif
 		default:
 			printf("%s unexpected controller number = %u\n",
 				__func__, i);
 			return;
 		}
 	}
 	printf("DDR registers dump for all controllers "
 		"(zero value is omitted)...\n");
 	puts("Offset (hex)   ");
 	for (i = 0; i < CONFIG_SYS_NUM_DDR_CTLRS; i++)
 		printf("     Base + 0x%04x", (u32)ddr[i] & 0xFFFF);
 	puts("\n");
 	for (k = 0; k < sizeof(struct ccsr_ddr)/4; k++) {
 		m = 0;
 		printf("%6d (0x%04x)", k * 4, k * 4);
 		for (i = 0; i < CONFIG_SYS_NUM_DDR_CTLRS; i++) {
 			p_32 = (u32 *) ddr[i];
 			if (p_32[k]) {
 				printf("        0x%08x", p_32[k]);
 				m++;
 			} else
 				puts("                  ");
 		}
 		if (m)
 			puts("\n");
 		else
 			puts("\r");
 	}
 	puts("\n");
 }

 /* invalid the TLBs for DDR and setup new ones to cover p_addr */
 static int reset_tlb(phys_addr_t p_addr, u32 size, phys_addr_t *phys_offset)
 {
 	u32 vstart = CFG_SYS_DDR_SDRAM_BASE;
 	unsigned long epn;
 	u32 tsize, valid, ptr;
 	int ddr_esel;

 	clear_ddr_tlbs_phys(p_addr, size>>20);

 	/* Setup new tlb to cover the physical address */
 	setup_ddr_tlbs_phys(p_addr, size>>20);

 	ptr = vstart;
 	ddr_esel = find_tlb_idx((void *)ptr, 1);
 	if (ddr_esel != -1) {
 		read_tlbcam_entry(ddr_esel, &valid, &tsize, &epn, phys_offset);
 	} else {
 		printf("TLB error in function %s\n", __func__);
 		return -1;
 	}

 	return 0;
 }

 /*
  * slide the testing window up to test another area
  * for 32_bit system, the maximum testable memory is limited to
  * CFG_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, CFG_MAX_MEM_MAPPED);

 #if !defined(CONFIG_PHYS_64BIT) || \
     !defined(CFG_SYS_INIT_RAM_ADDR_PHYS) || \
 	(CFG_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, CFG_MAX_MEM_MAPPED);
 		if (reset_tlb(p_addr, p_size, phys_offset) == -1)
 			return -1;
 		*vstart = CFG_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, CFG_MAX_MEM_MAPPED);

 	*vstart = CFG_SYS_DDR_SDRAM_BASE;
 	*size = (u32) p_size;	/* CFG_MAX_MEM_MAPPED < 4G */
 	*phys_offset = 0;

 #if !defined(CONFIG_PHYS_64BIT) || \
     !defined(CFG_SYS_INIT_RAM_ADDR_PHYS) || \
 	(CFG_SYS_INIT_RAM_ADDR_PHYS < 0x100000000ull)
 		if (gd->ram_size > CFG_MAX_MEM_MAPPED) {
 			puts("Cannot test more than ");
 			print_size(CFG_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
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright 2004,2007-2011 Freescale Semiconductor, Inc.
	* (C) Copyright 2002, 2003 Motorola Inc.
	* Xianghua Xiao (X.Xiao@motorola.com)
	*
	* (C) Copyright 2000
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*/

	#include <config.h>
	#include <common.h>
	#include <cpu_func.h>
	#include <clock_legacy.h>
	#include <display_options.h>
	#include <init.h>
	#include <irq_func.h>
	#include <log.h>
	#include <time.h>
	#include <vsprintf.h>
	#include <watchdog.h>
	#include <command.h>
	#include <fsl_esdhc.h>
	#include <asm/cache.h>
	#include <asm/global_data.h>
	#include <asm/io.h>
	#include <asm/mmu.h>
	#include <fsl_ifc.h>
	#include <asm/fsl_law.h>
	#include <asm/fsl_lbc.h>
	#include <post.h>
	#include <asm/processor.h>
	#include <fsl_ddr_sdram.h>
	#include <asm/ppc.h>
	#include <linux/delay.h>

	DECLARE_GLOBAL_DATA_PTR;

	/*
	* Default board reset function
	*/
	static void
	__board_reset(void)
	{
	/* Do nothing */
	}
	void board_reset_prepare(void) __attribute__((weak, alias("__board_reset")));
	void board_reset(void) __attribute__((weak, alias("__board_reset")));
	void board_reset_last(void) __attribute__((weak, alias("__board_reset")));

	int checkcpu (void)
	{
	sys_info_t sysinfo;
	uint pvr, svr;
	uint ver;
	uint major, minor;
	struct cpu_type *cpu;
	char buf1[32], buf2[32];
	#if defined(CONFIG_DYNAMIC_DDR_CLK_FREQ) \|\| \
	defined(CONFIG_STATIC_DDR_CLK_FREQ) \|\| defined(CONFIG_FSL_CORENET)
	ccsr_gur_t __iomem *gur =
	(void __iomem *)(CFG_SYS_MPC85xx_GUTS_ADDR);
	#endif

	/*
	* Cornet platforms use ddr sync bit in RCW to indicate sync vs async
	* mode. Previous platform use ddr ratio to do the same. This
	* information is only for display here.
	*/
	#ifdef CONFIG_FSL_CORENET
	#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
	u32 ddr_sync = 0; /* only async mode is supported */
	#else
	u32 ddr_sync = ((gur->rcwsr[5]) & FSL_CORENET_RCWSR5_DDR_SYNC)
	>> FSL_CORENET_RCWSR5_DDR_SYNC_SHIFT;
	#endif /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */
	#else /* CONFIG_FSL_CORENET */
	#if defined(CONFIG_DYNAMIC_DDR_CLK_FREQ) \|\| defined(CONFIG_STATIC_DDR_CLK_FREQ)
	u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO)
	>> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
	#else
	u32 ddr_ratio = 0;
	#endif /* CONFIG_DYNAMIC_DDR_CLK_FREQ \|\| CONFIG_STATIC_DDR_CLK_FREQ */
	#endif /* CONFIG_FSL_CORENET */

	unsigned int i, core, nr_cores = cpu_numcores();
	u32 mask = cpu_mask();

	#ifdef CONFIG_HETROGENOUS_CLUSTERS
	unsigned int j, dsp_core, dsp_numcores = cpu_num_dspcores();
	u32 dsp_mask = cpu_dsp_mask();
	#endif

	svr = get_svr();
	major = SVR_MAJ(svr);
	minor = SVR_MIN(svr);

	#if defined(CONFIG_SYS_FSL_QORIQ_CHASSIS2) && defined(CONFIG_E6500)
	if (SVR_SOC_VER(svr) == SVR_T4080) {
	ccsr_rcpm_t *rcpm =
	(void __iomem *)(CFG_SYS_FSL_CORENET_RCPM_ADDR);

	setbits_be32(&gur->devdisr2, FSL_CORENET_DEVDISR2_DTSEC1_6 \|\|
	FSL_CORENET_DEVDISR2_DTSEC1_9);
	setbits_be32(&gur->devdisr3, FSL_CORENET_DEVDISR3_PCIE3);
	setbits_be32(&gur->devdisr5, FSL_CORENET_DEVDISR5_DDR3);

	/* It needs SW to disable core4~7 as HW design sake on T4080 */
	for (i = 4; i < 8; i++)
	cpu_disable(i);

	/* request core4~7 into PH20 state, prior to entering PCL10
	* state, all cores in cluster should be placed in PH20 state.
	*/
	setbits_be32(&rcpm->pcph20setr, 0xf0);

	/* put the 2nd cluster into PCL10 state */
	setbits_be32(&rcpm->clpcl10setr, 1 << 1);
	}
	#endif

	if (cpu_numcores() > 1) {
	#ifndef CONFIG_MP
	puts("Unicore software on multiprocessor system!!\n"
	"To enable mutlticore build define CONFIG_MP\n");
	#endif
	volatile ccsr_pic_t pic = (void )(CFG_SYS_MPC8xxx_PIC_ADDR);
	printf("CPU%d: ", pic->whoami);
	} else {
	puts("CPU: ");
	}

	cpu = gd->arch.cpu;

	puts(cpu->name);
	if (IS_E_PROCESSOR(svr))
	puts("E");

	printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);

	pvr = get_pvr();
	ver = PVR_VER(pvr);
	major = PVR_MAJ(pvr);
	minor = PVR_MIN(pvr);

	printf("Core: ");
	switch(ver) {
	case PVR_VER_E500_V1:
	puts("e500v1");
	break;
	case PVR_VER_E500_V2:
	puts("e500v2");
	break;
	case PVR_VER_E500MC:
	puts("e500mc");
	break;
	case PVR_VER_E5500:
	puts("e5500");
	break;
	case PVR_VER_E6500:
	puts("e6500");
	break;
	default:
	puts("Unknown");
	break;
	}

	printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);

	if (nr_cores > CONFIG_MAX_CPUS) {
	panic("\nUnexpected number of cores: %d, max is %d\n",
	nr_cores, CONFIG_MAX_CPUS);
	}

	get_sys_info(&sysinfo);

	#ifdef CONFIG_SYS_FSL_SINGLE_SOURCE_CLK
	if (sysinfo.diff_sysclk == 1)
	puts("Single Source Clock Configuration\n");
	#endif

	puts("Clock Configuration:");
	for_each_cpu(i, core, nr_cores, mask) {
	if (!(i & 3))
	printf ("\n ");
	printf("CPU%d:%-4s MHz, ", core,
	strmhz(buf1, sysinfo.freq_processor[core]));
	}

	#ifdef CONFIG_HETROGENOUS_CLUSTERS
	for_each_cpu(j, dsp_core, dsp_numcores, dsp_mask) {
	if (!(j & 3))
	printf("\n ");
	printf("DSP CPU%d:%-4s MHz, ", j,
	strmhz(buf1, sysinfo.freq_processor_dsp[dsp_core]));
	}
	#endif

	printf("\n CCB:%-4s MHz,", strmhz(buf1, sysinfo.freq_systembus));
	printf("\n");

	#ifdef CONFIG_FSL_CORENET
	if (ddr_sync == 1) {
	printf(" DDR:%-4s MHz (%s MT/s data rate) "
	"(Synchronous), ",
	strmhz(buf1, sysinfo.freq_ddrbus/2),
	strmhz(buf2, sysinfo.freq_ddrbus));
	} else {
	printf(" DDR:%-4s MHz (%s MT/s data rate) "
	"(Asynchronous), ",
	strmhz(buf1, sysinfo.freq_ddrbus/2),
	strmhz(buf2, sysinfo.freq_ddrbus));
	}
	#else
	switch (ddr_ratio) {
	case 0x0:
	printf(" DDR:%-4s MHz (%s MT/s data rate), ",
	strmhz(buf1, sysinfo.freq_ddrbus/2),
	strmhz(buf2, sysinfo.freq_ddrbus));
	break;
	case 0x7:
	printf(" DDR:%-4s MHz (%s MT/s data rate) "
	"(Synchronous), ",
	strmhz(buf1, sysinfo.freq_ddrbus/2),
	strmhz(buf2, sysinfo.freq_ddrbus));
	break;
	default:
	printf(" DDR:%-4s MHz (%s MT/s data rate) "
	"(Asynchronous), ",
	strmhz(buf1, sysinfo.freq_ddrbus/2),
	strmhz(buf2, sysinfo.freq_ddrbus));
	break;
	}
	#endif

	#if defined(CONFIG_FSL_LBC)
	if (sysinfo.freq_localbus > LCRR_CLKDIV) {
	printf("LBC:%-4s MHz\n", strmhz(buf1, sysinfo.freq_localbus));
	} else {
	printf("LBC: unknown (LCRR[CLKDIV] = 0x%02lx)\n",
	sysinfo.freq_localbus);
	}
	#endif

	#if defined(CONFIG_FSL_IFC)
	printf("IFC:%-4s MHz\n", strmhz(buf1, sysinfo.freq_localbus));
	#endif

	#ifdef CONFIG_QE
	printf(" QE:%-4s MHz\n", strmhz(buf1, sysinfo.freq_qe));
	#endif

	#if defined(CONFIG_SYS_CPRI)
	printf(" ");
	printf("CPRI:%-4s MHz", strmhz(buf1, sysinfo.freq_cpri));
	#endif

	#if defined(CONFIG_SYS_MAPLE)
	printf("\n ");
	printf("MAPLE:%-4s MHz, ", strmhz(buf1, sysinfo.freq_maple));
	printf("MAPLE-ULB:%-4s MHz, ", strmhz(buf1, sysinfo.freq_maple_ulb));
	printf("MAPLE-eTVPE:%-4s MHz\n",
	strmhz(buf1, sysinfo.freq_maple_etvpe));
	#endif

	#ifdef CONFIG_SYS_DPAA_FMAN
	for (i = 0; i < CFG_SYS_NUM_FMAN; i++) {
	printf(" FMAN%d: %s MHz\n", i + 1,
	strmhz(buf1, sysinfo.freq_fman[i]));
	}
	#endif

	#ifdef CONFIG_SYS_DPAA_QBMAN
	printf(" QMAN: %s MHz\n", strmhz(buf1, sysinfo.freq_qman));
	#endif

	#ifdef CONFIG_SYS_DPAA_PME
	printf(" PME: %s MHz\n", strmhz(buf1, sysinfo.freq_pme));
	#endif

	puts("L1: D-cache 32 KiB enabled\n I-cache 32 KiB enabled\n");

	#ifdef CONFIG_FSL_CORENET
	/* Display the RCW, so that no one gets confused as to what RCW
	* we're actually using for this boot.
	*/
	puts("Reset Configuration Word (RCW):");
	for (i = 0; i < ARRAY_SIZE(gur->rcwsr); i++) {
	u32 rcw = in_be32(&gur->rcwsr[i]);

	if ((i % 4) == 0)
	printf("\n %08x:", i * 4);
	printf(" %08x", rcw);
	}
	puts("\n");
	#endif

	return 0;
	}


	/* ------------------------------------------------------------------------- */

	int do_reset(struct cmd_tbl cmdtp, int flag, int argc, char const argv[])
	{
	/* Everything after the first generation of PQ3 parts has RSTCR */
	#if defined(CONFIG_ARCH_MPC8540) \|\| defined(CONFIG_ARCH_MPC8560)
	unsigned long val, msr;

	/*
	* Initiate hard reset in debug control register DBCR0
	* Make sure MSR[DE] = 1. This only resets the core.
	*/
	msr = mfmsr ();
	msr \|= MSR_DE;
	mtmsr (msr);

	val = mfspr(DBCR0);
	val \|= 0x70000000;
	mtspr(DBCR0,val);
	#else
	volatile ccsr_gur_t gur = (void )(CFG_SYS_MPC85xx_GUTS_ADDR);

	/* Call board-specific preparation for reset */
	board_reset_prepare();

	/* Attempt board-specific reset */
	board_reset();

	/* Next try asserting HRESET_REQ */
	out_be32(&gur->rstcr, 0x2);
	udelay(100);

	/* Attempt last-stage board-specific reset */
	board_reset_last();
	#endif

	return 1;
	}


	/*
	* Get timebase clock frequency
	*/
	__weak unsigned long get_tbclk(void)
	{
	unsigned long tbclk_div = CONFIG_SYS_FSL_TBCLK_DIV;

	return (gd->bus_clk + (tbclk_div >> 1)) / tbclk_div;
	}


	#ifndef CONFIG_WDT
	#if defined(CONFIG_WATCHDOG)
	#define WATCHDOG_MASK (TCR_WP(63) \| TCR_WRC(3) \| TCR_WIE)
	void
	init_85xx_watchdog(void)
	{
	mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WATCHDOG_MASK) \|
	TCR_WP(CFG_WATCHDOG_PRESC) \| TCR_WRC(CFG_WATCHDOG_RC));
	}

	void
	reset_85xx_watchdog(void)
	{
	/*
	* Clear TSR(WIS) bit by writing 1
	*/
	mtspr(SPRN_TSR, TSR_WIS);
	}

	void
	watchdog_reset(void)
	{
	int re_enable = disable_interrupts();

	reset_85xx_watchdog();
	if (re_enable)
	enable_interrupts();
	}
	#endif /* CONFIG_WATCHDOG */
	#endif

	/*
	* Initializes on-chip MMC controllers.
	* to override, implement board_mmc_init()
	*/
	int cpu_mmc_init(struct bd_info *bis)
	{
	#ifdef CONFIG_FSL_ESDHC
	return fsl_esdhc_mmc_init(bis);
	#else
	return 0;
	#endif
	}

	/*
	* Print out the state of various machine registers.
	* Currently prints out LAWs, BR0/OR0 for LBC, CSPR/CSOR/Timing
	* parameters for IFC and TLBs
	*/
	void print_reginfo(void)
	{
	print_tlbcam();
	#ifdef CONFIG_FSL_LAW
	print_laws();
	#endif
	#if defined(CONFIG_FSL_LBC)
	print_lbc_regs();
	#endif
	#ifdef CONFIG_FSL_IFC
	print_ifc_regs();
	#endif

	}

	/* Common ddr init for non-corenet fsl 85xx platforms */
	#ifndef CONFIG_FSL_CORENET
	#if (defined(CONFIG_SYS_RAMBOOT) \|\| defined(CONFIG_SPL)) && \
	!defined(CFG_SYS_INIT_L2_ADDR)
	int dram_init(void)
	{
	#if defined(CONFIG_SPD_EEPROM) \|\| defined(CONFIG_DDR_SPD) \|\| \
	defined(CONFIG_ARCH_QEMU_E500)
	gd->ram_size = fsl_ddr_sdram_size();
	#else
	gd->ram_size = (phys_size_t)CFG_SYS_SDRAM_SIZE * 1024 * 1024;
	#endif

	return 0;
	}
	#else /* CONFIG_SYS_RAMBOOT */
	int dram_init(void)
	{
	phys_size_t dram_size = 0;

	#if defined(CONFIG_SYS_FSL_ERRATUM_DDR_MSYNC_IN)
	{
	ccsr_gur_t gur = (void )(CFG_SYS_MPC85xx_GUTS_ADDR);
	unsigned int x = 10;
	unsigned int i;

	/*
	* Work around to stabilize DDR DLL
	*/
	out_be32(&gur->ddrdllcr, 0x81000000);
	asm("sync;isync;msync");
	udelay(200);
	while (in_be32(&gur->ddrdllcr) != 0x81000100) {
	setbits_be32(&gur->devdisr, 0x00010000);
	for (i = 0; i < x; i++)
	;
	clrbits_be32(&gur->devdisr, 0x00010000);
	x++;
	}
	}
	#endif

	#if defined(CONFIG_SPD_EEPROM) \|\| \
	defined(CONFIG_DDR_SPD) \|\| \
	defined(CONFIG_SYS_DDR_RAW_TIMING)
	dram_size = fsl_ddr_sdram();
	#else
	dram_size = fixed_sdram();
	#endif
	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
	dram_size *= 0x100000;

	#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
	/*
	* Initialize and enable DDR ECC.
	*/
	ddr_enable_ecc(dram_size);
	#endif

	#if defined(CONFIG_FSL_LBC)
	/* Some boards also have sdram on the lbc */
	lbc_sdram_init();
	#endif

	debug("DDR: ");
	gd->ram_size = dram_size;

	return 0;
	}
	#endif /* CONFIG_SYS_RAMBOOT */
	#endif

	#if CFG_POST & CFG_SYS_POST_MEMORY

	/* Board-specific functions defined in each board's ddr.c */
	void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
	unsigned int ctrl_num, unsigned int dimm_slots_per_ctrl);
	void read_tlbcam_entry(int idx, u32 valid, u32 tsize, unsigned long *epn,
	phys_addr_t *rpn);
	unsigned int
	setup_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg);

	void clear_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg);

	static void dump_spd_ddr_reg(void)
	{
	int i, j, k, m;
	u8 *p_8;
	u32 *p_32;
	struct ccsr_ddr __iomem *ddr[CONFIG_SYS_NUM_DDR_CTLRS];
	generic_spd_eeprom_t
	spd[CONFIG_SYS_NUM_DDR_CTLRS][CONFIG_DIMM_SLOTS_PER_CTLR];

	for (i = 0; i < CONFIG_SYS_NUM_DDR_CTLRS; i++)
	fsl_ddr_get_spd(spd[i], i, CONFIG_DIMM_SLOTS_PER_CTLR);

	puts("SPD data of all dimms (zero value is omitted)...\n");
	puts("Byte (hex) ");
	k = 1;
	for (i = 0; i < CONFIG_SYS_NUM_DDR_CTLRS; i++) {
	for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++)
	printf("Dimm%d ", k++);
	}
	puts("\n");
	for (k = 0; k < sizeof(generic_spd_eeprom_t); k++) {
	m = 0;
	printf("%3d (0x%02x) ", k, k);
	for (i = 0; i < CONFIG_SYS_NUM_DDR_CTLRS; i++) {
	for (j = 0; j < CONFIG_DIMM_SLOTS_PER_CTLR; j++) {
	p_8 = (u8 *) &spd[i][j];
	if (p_8[k]) {
	printf("0x%02x ", p_8[k]);
	m++;
	} else
	puts(" ");
	}
	}
	if (m)
	puts("\n");
	else
	puts("\r");
	}

	for (i = 0; i < CONFIG_SYS_NUM_DDR_CTLRS; i++) {
	switch (i) {
	case 0:
	ddr[i] = (void *)CFG_SYS_FSL_DDR_ADDR;
	break;
	#if defined(CFG_SYS_FSL_DDR2_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 1)
	case 1:
	ddr[i] = (void *)CFG_SYS_FSL_DDR2_ADDR;
	break;
	#endif
	#if defined(CFG_SYS_FSL_DDR3_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 2)
	case 2:
	ddr[i] = (void *)CFG_SYS_FSL_DDR3_ADDR;
	break;
	#endif
	#if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_SYS_NUM_DDR_CTLRS > 3)
	case 3:
	ddr[i] = (void *)CONFIG_SYS_FSL_DDR4_ADDR;
	break;
	#endif
	default:
	printf("%s unexpected controller number = %u\n",
	__func__, i);
	return;
	}
	}
	printf("DDR registers dump for all controllers "
	"(zero value is omitted)...\n");
	puts("Offset (hex) ");
	for (i = 0; i < CONFIG_SYS_NUM_DDR_CTLRS; i++)
	printf(" Base + 0x%04x", (u32)ddr[i] & 0xFFFF);
	puts("\n");
	for (k = 0; k < sizeof(struct ccsr_ddr)/4; k++) {
	m = 0;
	printf("%6d (0x%04x)", k * 4, k * 4);
	for (i = 0; i < CONFIG_SYS_NUM_DDR_CTLRS; i++) {
	p_32 = (u32 *) ddr[i];
	if (p_32[k]) {
	printf(" 0x%08x", p_32[k]);
	m++;
	} else
	puts(" ");
	}
	if (m)
	puts("\n");
	else
	puts("\r");
	}
	puts("\n");
	}

	/* invalid the TLBs for DDR and setup new ones to cover p_addr */
	static int reset_tlb(phys_addr_t p_addr, u32 size, phys_addr_t *phys_offset)
	{
	u32 vstart = CFG_SYS_DDR_SDRAM_BASE;
	unsigned long epn;
	u32 tsize, valid, ptr;
	int ddr_esel;

	clear_ddr_tlbs_phys(p_addr, size>>20);

	/* Setup new tlb to cover the physical address */
	setup_ddr_tlbs_phys(p_addr, size>>20);

	ptr = vstart;
	ddr_esel = find_tlb_idx((void *)ptr, 1);
	if (ddr_esel != -1) {
	read_tlbcam_entry(ddr_esel, &valid, &tsize, &epn, phys_offset);
	} else {
	printf("TLB error in function %s\n", __func__);
	return -1;
	}

	return 0;
	}

	/*
	* slide the testing window up to test another area
	* for 32_bit system, the maximum testable memory is limited to
	* CFG_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, CFG_MAX_MEM_MAPPED);

	#if !defined(CONFIG_PHYS_64BIT) \|\| \
	!defined(CFG_SYS_INIT_RAM_ADDR_PHYS) \|\| \
	(CFG_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, CFG_MAX_MEM_MAPPED);
	if (reset_tlb(p_addr, p_size, phys_offset) == -1)
	return -1;
	*vstart = CFG_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, CFG_MAX_MEM_MAPPED);

	*vstart = CFG_SYS_DDR_SDRAM_BASE;
	size = (u32) p_size; / CFG_MAX_MEM_MAPPED < 4G */
	*phys_offset = 0;

	#if !defined(CONFIG_PHYS_64BIT) \|\| \
	!defined(CFG_SYS_INIT_RAM_ADDR_PHYS) \|\| \
	(CFG_SYS_INIT_RAM_ADDR_PHYS < 0x100000000ull)
	if (gd->ram_size > CFG_MAX_MEM_MAPPED) {
	puts("Cannot test more than ");
	print_size(CFG_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