mpc83xx: Consolidate the ECC support of 83xx

Remove the duplicated source code of ecc command on the <board>.c,
for reused, move these code to cpu/mpc83xx directory.

Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

2 files changed, 391 insertions, 1 deletions

diff --git a/cpu/mpc83xx/Makefile b/cpu/mpc83xx/Makefile
index bb96f77..2329970 100644
--- a/cpu/mpc83xx/Makefile
+++ b/cpu/mpc83xx/Makefile
@@ -29,7 +29,7 @@ LIB	= $(obj)lib$(CPU).a
 
 START	= start.o
 COBJS	= traps.o cpu.o cpu_init.o speed.o interrupts.o \
-	  spd_sdram.o qe_io.o pci.o
+	  spd_sdram.o ecc.o qe_io.o pci.o
 
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
diff --git a/cpu/mpc83xx/ecc.c b/cpu/mpc83xx/ecc.c
new file mode 100644
index 0000000..6f13094
--- /dev/null
+++ b/cpu/mpc83xx/ecc.c
@@ -0,0 +1,390 @@
+/*
+ * Copyright (C) 2007 Freescale Semiconductor, Inc.
+ *
+ * Dave Liu <daveliu@freescale.com>
+ * based on the contribution of Marian Balakowicz <m8@semihalf.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <common.h>
+#include <mpc83xx.h>
+#include <command.h>
+
+#if defined(CONFIG_DDR_ECC) && defined(CONFIG_DDR_ECC_CMD)
+void ecc_print_status(void)
+{
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile ddr83xx_t *ddr = &immap->ddr;
+
+	printf("\nECC mode: %s\n\n",
+	       (ddr->sdram_cfg & SDRAM_CFG_ECC_EN) ? "ON" : "OFF");
+
+	/* Interrupts */
+	printf("Memory Error Interrupt Enable:\n");
+	printf("  Multiple-Bit Error Interrupt Enable: %d\n",
+	       (ddr->err_int_en & ECC_ERR_INT_EN_MBEE) ? 1 : 0);
+	printf("  Single-Bit Error Interrupt Enable: %d\n",
+	       (ddr->err_int_en & ECC_ERR_INT_EN_SBEE) ? 1 : 0);
+	printf("  Memory Select Error Interrupt Enable: %d\n\n",
+	       (ddr->err_int_en & ECC_ERR_INT_EN_MSEE) ? 1 : 0);
+
+	/* Error disable */
+	printf("Memory Error Disable:\n");
+	printf("  Multiple-Bit Error Disable: %d\n",
+	       (ddr->err_disable & ECC_ERROR_DISABLE_MBED) ? 1 : 0);
+	printf("  Sinle-Bit Error Disable: %d\n",
+	       (ddr->err_disable & ECC_ERROR_DISABLE_SBED) ? 1 : 0);
+	printf("  Memory Select Error Disable: %d\n\n",
+	       (ddr->err_disable & ECC_ERROR_DISABLE_MSED) ? 1 : 0);
+
+	/* Error injection */
+	printf("Memory Data Path Error Injection Mask High/Low: %08lx %08lx\n",
+	       ddr->data_err_inject_hi, ddr->data_err_inject_lo);
+
+	printf("Memory Data Path Error Injection Mask ECC:\n");
+	printf("  ECC Mirror Byte: %d\n",
+	       (ddr->ecc_err_inject & ECC_ERR_INJECT_EMB) ? 1 : 0);
+	printf("  ECC Injection Enable: %d\n",
+	       (ddr->ecc_err_inject & ECC_ERR_INJECT_EIEN) ? 1 : 0);
+	printf("  ECC Error Injection Mask: 0x%02x\n\n",
+	       ddr->ecc_err_inject & ECC_ERR_INJECT_EEIM);
+
+	/* SBE counter/threshold */
+	printf("Memory Single-Bit Error Management (0..255):\n");
+	printf("  Single-Bit Error Threshold: %d\n",
+	       (ddr->err_sbe & ECC_ERROR_MAN_SBET) >> ECC_ERROR_MAN_SBET_SHIFT);
+	printf("  Single-Bit Error Counter: %d\n\n",
+	       (ddr->err_sbe & ECC_ERROR_MAN_SBEC) >> ECC_ERROR_MAN_SBEC_SHIFT);
+
+	/* Error detect */
+	printf("Memory Error Detect:\n");
+	printf("  Multiple Memory Errors: %d\n",
+	       (ddr->err_detect & ECC_ERROR_DETECT_MME) ? 1 : 0);
+	printf("  Multiple-Bit Error: %d\n",
+	       (ddr->err_detect & ECC_ERROR_DETECT_MBE) ? 1 : 0);
+	printf("  Single-Bit Error: %d\n",
+	       (ddr->err_detect & ECC_ERROR_DETECT_SBE) ? 1 : 0);
+	printf("  Memory Select Error: %d\n\n",
+	       (ddr->err_detect & ECC_ERROR_DETECT_MSE) ? 1 : 0);
+
+	/* Capture data */
+	printf("Memory Error Address Capture: 0x%08lx\n", ddr->capture_address);
+	printf("Memory Data Path Read Capture High/Low: %08lx %08lx\n",
+	       ddr->capture_data_hi, ddr->capture_data_lo);
+	printf("Memory Data Path Read Capture ECC: 0x%02x\n\n",
+	       ddr->capture_ecc & CAPTURE_ECC_ECE);
+
+	printf("Memory Error Attributes Capture:\n");
+	printf(" Data Beat Number: %d\n",
+	       (ddr->capture_attributes & ECC_CAPT_ATTR_BNUM) >>
+	       ECC_CAPT_ATTR_BNUM_SHIFT);
+	printf("  Transaction Size: %d\n",
+	       (ddr->capture_attributes & ECC_CAPT_ATTR_TSIZ) >>
+	       ECC_CAPT_ATTR_TSIZ_SHIFT);
+	printf("  Transaction Source: %d\n",
+	       (ddr->capture_attributes & ECC_CAPT_ATTR_TSRC) >>
+	       ECC_CAPT_ATTR_TSRC_SHIFT);
+	printf("  Transaction Type: %d\n",
+	       (ddr->capture_attributes & ECC_CAPT_ATTR_TTYP) >>
+	       ECC_CAPT_ATTR_TTYP_SHIFT);
+	printf("  Error Information Valid: %d\n\n",
+	       ddr->capture_attributes & ECC_CAPT_ATTR_VLD);
+}
+
+int do_ecc(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile ddr83xx_t *ddr = &immap->ddr;
+	volatile u32 val;
+	u64 *addr;
+	u32 count;
+	register u64 *i;
+	u32 ret[2];
+	u32 pattern[2];
+	u32 writeback[2];
+
+	/* The pattern is written into memory to generate error */
+	pattern[0] = 0xfedcba98UL;
+	pattern[1] = 0x76543210UL;
+
+	/* After injecting error, re-initialize the memory with the value */
+	writeback[0] = 0x01234567UL;
+	writeback[1] = 0x89abcdefUL;
+
+	if (argc > 4) {
+		printf("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	if (argc == 2) {
+		if (strcmp(argv[1], "status") == 0) {
+			ecc_print_status();
+			return 0;
+		} else if (strcmp(argv[1], "captureclear") == 0) {
+			ddr->capture_address = 0;
+			ddr->capture_data_hi = 0;
+			ddr->capture_data_lo = 0;
+			ddr->capture_ecc = 0;
+			ddr->capture_attributes = 0;
+			return 0;
+		}
+	}
+	if (argc == 3) {
+		if (strcmp(argv[1], "sbecnt") == 0) {
+			val = simple_strtoul(argv[2], NULL, 10);
+			if (val > 255) {
+				printf("Incorrect Counter value, "
+				       "should be 0..255\n");
+				return 1;
+			}
+
+			val = (val << ECC_ERROR_MAN_SBEC_SHIFT);
+			val |= (ddr->err_sbe & ECC_ERROR_MAN_SBET);
+
+			ddr->err_sbe = val;
+			return 0;
+		} else if (strcmp(argv[1], "sbethr") == 0) {
+			val = simple_strtoul(argv[2], NULL, 10);
+			if (val > 255) {
+				printf("Incorrect Counter value, "
+				       "should be 0..255\n");
+				return 1;
+			}
+
+			val = (val << ECC_ERROR_MAN_SBET_SHIFT);
+			val |= (ddr->err_sbe & ECC_ERROR_MAN_SBEC);
+
+			ddr->err_sbe = val;
+			return 0;
+		} else if (strcmp(argv[1], "errdisable") == 0) {
+			val = ddr->err_disable;
+
+			if (strcmp(argv[2], "+sbe") == 0) {
+				val |= ECC_ERROR_DISABLE_SBED;
+			} else if (strcmp(argv[2], "+mbe") == 0) {
+				val |= ECC_ERROR_DISABLE_MBED;
+			} else if (strcmp(argv[2], "+mse") == 0) {
+				val |= ECC_ERROR_DISABLE_MSED;
+			} else if (strcmp(argv[2], "+all") == 0) {
+				val |= (ECC_ERROR_DISABLE_SBED |
+					ECC_ERROR_DISABLE_MBED |
+					ECC_ERROR_DISABLE_MSED);
+			} else if (strcmp(argv[2], "-sbe") == 0) {
+				val &= ~ECC_ERROR_DISABLE_SBED;
+			} else if (strcmp(argv[2], "-mbe") == 0) {
+				val &= ~ECC_ERROR_DISABLE_MBED;
+			} else if (strcmp(argv[2], "-mse") == 0) {
+				val &= ~ECC_ERROR_DISABLE_MSED;
+			} else if (strcmp(argv[2], "-all") == 0) {
+				val &= ~(ECC_ERROR_DISABLE_SBED |
+					 ECC_ERROR_DISABLE_MBED |
+					 ECC_ERROR_DISABLE_MSED);
+			} else {
+				printf("Incorrect err_disable field\n");
+				return 1;
+			}
+
+			ddr->err_disable = val;
+			__asm__ __volatile__("sync");
+			__asm__ __volatile__("isync");
+			return 0;
+		} else if (strcmp(argv[1], "errdetectclr") == 0) {
+			val = ddr->err_detect;
+
+			if (strcmp(argv[2], "mme") == 0) {
+				val |= ECC_ERROR_DETECT_MME;
+			} else if (strcmp(argv[2], "sbe") == 0) {
+				val |= ECC_ERROR_DETECT_SBE;
+			} else if (strcmp(argv[2], "mbe") == 0) {
+				val |= ECC_ERROR_DETECT_MBE;
+			} else if (strcmp(argv[2], "mse") == 0) {
+				val |= ECC_ERROR_DETECT_MSE;
+			} else if (strcmp(argv[2], "all") == 0) {
+				val |= (ECC_ERROR_DETECT_MME |
+					ECC_ERROR_DETECT_MBE |
+					ECC_ERROR_DETECT_SBE |
+					ECC_ERROR_DETECT_MSE);
+			} else {
+				printf("Incorrect err_detect field\n");
+				return 1;
+			}
+
+			ddr->err_detect = val;
+			return 0;
+		} else if (strcmp(argv[1], "injectdatahi") == 0) {
+			val = simple_strtoul(argv[2], NULL, 16);
+
+			ddr->data_err_inject_hi = val;
+			return 0;
+		} else if (strcmp(argv[1], "injectdatalo") == 0) {
+			val = simple_strtoul(argv[2], NULL, 16);
+
+			ddr->data_err_inject_lo = val;
+			return 0;
+		} else if (strcmp(argv[1], "injectecc") == 0) {
+			val = simple_strtoul(argv[2], NULL, 16);
+			if (val > 0xff) {
+				printf("Incorrect ECC inject mask, "
+				       "should be 0x00..0xff\n");
+				return 1;
+			}
+			val |= (ddr->ecc_err_inject & ~ECC_ERR_INJECT_EEIM);
+
+			ddr->ecc_err_inject = val;
+			return 0;
+		} else if (strcmp(argv[1], "inject") == 0) {
+			val = ddr->ecc_err_inject;
+
+			if (strcmp(argv[2], "en") == 0)
+				val |= ECC_ERR_INJECT_EIEN;
+			else if (strcmp(argv[2], "dis") == 0)
+				val &= ~ECC_ERR_INJECT_EIEN;
+			else
+				printf("Incorrect command\n");
+
+			ddr->ecc_err_inject = val;
+			__asm__ __volatile__("sync");
+			__asm__ __volatile__("isync");
+			return 0;
+		} else if (strcmp(argv[1], "mirror") == 0) {
+			val = ddr->ecc_err_inject;
+
+			if (strcmp(argv[2], "en") == 0)
+				val |= ECC_ERR_INJECT_EMB;
+			else if (strcmp(argv[2], "dis") == 0)
+				val &= ~ECC_ERR_INJECT_EMB;
+			else
+				printf("Incorrect command\n");
+
+			ddr->ecc_err_inject = val;
+			return 0;
+		}
+	}
+	if (argc == 4) {
+		if (strcmp(argv[1], "testdw") == 0) {
+			addr = (u64 *) simple_strtoul(argv[2], NULL, 16);
+			count = simple_strtoul(argv[3], NULL, 16);
+
+			if ((u32) addr % 8) {
+				printf("Address not alligned on "
+				       "double word boundary\n");
+				return 1;
+			}
+			disable_interrupts();
+
+			for (i = addr; i < addr + count; i++) {
+
+				/* enable injects */
+				ddr->ecc_err_inject |= ECC_ERR_INJECT_EIEN;
+				__asm__ __volatile__("sync");
+				__asm__ __volatile__("isync");
+
+				/* write memory location injecting errors */
+				ppcDWstore((u32 *) i, pattern);
+				__asm__ __volatile__("sync");
+
+				/* disable injects */
+				ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN;
+				__asm__ __volatile__("sync");
+				__asm__ __volatile__("isync");
+
+				/* read data, this generates ECC error */
+				ppcDWload((u32 *) i, ret);
+				__asm__ __volatile__("sync");
+
+				/* re-initialize memory, double word write the location again,
+				 * generates new ECC code this time */
+				ppcDWstore((u32 *) i, writeback);
+				__asm__ __volatile__("sync");
+			}
+			enable_interrupts();
+			return 0;
+		}
+		if (strcmp(argv[1], "testword") == 0) {
+			addr = (u64 *) simple_strtoul(argv[2], NULL, 16);
+			count = simple_strtoul(argv[3], NULL, 16);
+
+			if ((u32) addr % 8) {
+				printf("Address not alligned on "
+				       "double word boundary\n");
+				return 1;
+			}
+			disable_interrupts();
+
+			for (i = addr; i < addr + count; i++) {
+
+				/* enable injects */
+				ddr->ecc_err_inject |= ECC_ERR_INJECT_EIEN;
+				__asm__ __volatile__("sync");
+				__asm__ __volatile__("isync");
+
+				/* write memory location injecting errors */
+				*(u32 *) i = 0xfedcba98UL;
+				__asm__ __volatile__("sync");
+
+				/* sub double word write,
+				 * bus will read-modify-write,
+				 * generates ECC error */
+				*((u32 *) i + 1) = 0x76543210UL;
+				__asm__ __volatile__("sync");
+
+				/* disable injects */
+				ddr->ecc_err_inject &= ~ECC_ERR_INJECT_EIEN;
+				__asm__ __volatile__("sync");
+				__asm__ __volatile__("isync");
+
+				/* re-initialize memory,
+				 * double word write the location again,
+				 * generates new ECC code this time */
+				ppcDWstore((u32 *) i, writeback);
+				__asm__ __volatile__("sync");
+			}
+			enable_interrupts();
+			return 0;
+		}
+	}
+	printf("Usage:\n%s\n", cmdtp->usage);
+	return 1;
+}
+
+U_BOOT_CMD(ecc, 4, 0, do_ecc,
+	   "ecc     - support for DDR ECC features\n",
+	   "status              - print out status info\n"
+	   "ecc captureclear        - clear capture regs data\n"
+	   "ecc sbecnt <val>        - set Single-Bit Error counter\n"
+	   "ecc sbethr <val>        - set Single-Bit Threshold\n"
+	   "ecc errdisable <flag>   - clear/set disable Memory Error Disable, flag:\n"
+	   "  [-|+]sbe - Single-Bit Error\n"
+	   "  [-|+]mbe - Multiple-Bit Error\n"
+	   "  [-|+]mse - Memory Select Error\n"
+	   "  [-|+]all - all errors\n"
+	   "ecc errdetectclr <flag> - clear Memory Error Detect, flag:\n"
+	   "  mme - Multiple Memory Errors\n"
+	   "  sbe - Single-Bit Error\n"
+	   "  mbe - Multiple-Bit Error\n"
+	   "  mse - Memory Select Error\n"
+	   "  all - all errors\n"
+	   "ecc injectdatahi <hi>  - set Memory Data Path Error Injection Mask High\n"
+	   "ecc injectdatalo <lo>  - set Memory Data Path Error Injection Mask Low\n"
+	   "ecc injectecc <ecc>    - set ECC Error Injection Mask\n"
+	   "ecc inject <en|dis>    - enable/disable error injection\n"
+	   "ecc mirror <en|dis>    - enable/disable mirror byte\n"
+	   "ecc testdw <addr> <cnt>  - test mem region with double word access:\n"
+	   "  - enables injects\n"
+	   "  - writes pattern injecting errors with double word access\n"
+	   "  - disables injects\n"
+	   "  - reads pattern back with double word access, generates error\n"
+	   "  - re-inits memory\n"
+	   "ecc testword <addr> <cnt>  - test mem region with word access:\n"
+	   "  - enables injects\n"
+	   "  - writes pattern injecting errors with word access\n"
+	   "  - writes pattern with word access, generates error\n"
+	   "  - disables injects\n" "  - re-inits memory");
+#endif