[U-Boot] [PATCH v3 16/16] FSL DDR: Convert MPC8548CDS to new DDR code.

Kumar Gala galak at kernel.crashing.org
Thu Aug 21 01:22:58 CEST 2008


From: Jon Loeliger <jdl at freescale.com>

Signed-off-by: Jon Loeliger <jdl at freescale.com>
Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
---
 board/freescale/mpc8548cds/Makefile     |    1 +
 board/freescale/mpc8548cds/ddr.c        |  239 +++++++++++++++++++++++++++++++
 board/freescale/mpc8548cds/mpc8548cds.c |   12 ++-
 include/configs/MPC8548CDS.h            |   49 +++++--
 4 files changed, 289 insertions(+), 12 deletions(-)
 create mode 100644 board/freescale/mpc8548cds/ddr.c

diff --git a/board/freescale/mpc8548cds/Makefile b/board/freescale/mpc8548cds/Makefile
index 98f1530..c19a527 100644
--- a/board/freescale/mpc8548cds/Makefile
+++ b/board/freescale/mpc8548cds/Makefile
@@ -27,6 +27,7 @@ include $(TOPDIR)/config.mk
 LIB	= $(obj)lib$(BOARD).a
 
 COBJS-y	+= $(BOARD).o
+COBJS-y	+= ddr.o
 COBJS-y	+= law.o
 COBJS-y	+= tlb.o
 
diff --git a/board/freescale/mpc8548cds/ddr.c b/board/freescale/mpc8548cds/ddr.c
new file mode 100644
index 0000000..1856ebc
--- /dev/null
+++ b/board/freescale/mpc8548cds/ddr.c
@@ -0,0 +1,239 @@
+/*
+ * Copyright 2008 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * Version 2 as published by the Free Software Foundation.
+ */
+
+#include <common.h>
+#include <i2c.h>
+
+#include <../cpu/mpc8xxx/fsl_ddr_sdram.h>
+
+#define SDRAM_TYPE_DDR1    2
+#define SDRAM_TYPE_DDR2    3
+
+static void
+get_spd(ddr2_spd_eeprom_t *spd, unsigned char i2c_address)
+{
+	i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr2_spd_eeprom_t));
+}
+
+unsigned int fsl_ddr_get_mem_data_rate(void)
+{
+	return get_ddr_freq(0);
+}
+
+void fsl_ddr_get_spd(ddr2_spd_eeprom_t *ctrl_dimms_spd,
+			unsigned int ctrl_num)
+{
+	unsigned int i;
+
+	if (ctrl_num) {
+		printf("%s unexpected ctrl_num = %u\n", __FUNCTION__, ctrl_num);
+		return;
+	}
+
+	for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++) {
+		get_spd(&(ctrl_dimms_spd[i]), SPD_EEPROM_ADDRESS1);
+	}
+}
+
+#if (CONFIG_CHIP_SELECTS_PER_CTRL > 4)
+#error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL
+#endif
+
+void fsl_ddr_dump_memctl_regs(unsigned int ctrl_num)
+{
+	unsigned int i;
+	volatile ccsr_ddr_t *ddr = (void *)CFG_MPC85xx_DDR_ADDR;
+
+	for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+		unsigned int bnds = 0;
+		unsigned int config = 0;
+		unsigned int *pbnds = NULL;
+		unsigned int *pconfig = NULL;
+
+		if (i == 0) {
+			bnds     = ddr->cs0_bnds;
+			config   = ddr->cs0_config;
+			pbnds    = (unsigned int *)&ddr->cs0_bnds;
+			pconfig  = (unsigned int *)&ddr->cs0_config;
+
+		} else if (i == 1) {
+			bnds     = ddr->cs1_bnds;
+			config   = ddr->cs1_config;
+			pbnds    = (unsigned int *)&ddr->cs1_bnds;
+			pconfig  = (unsigned int *)&ddr->cs1_config;
+
+		} else if (i == 2) {
+			bnds     = ddr->cs2_bnds;
+			config   = ddr->cs2_config;
+			pbnds    = (unsigned int *)&ddr->cs2_bnds;
+			pconfig  = (unsigned int *)&ddr->cs2_config;
+
+		} else {
+			bnds     = ddr->cs3_bnds;
+			config   = ddr->cs3_config;
+			pbnds    = (unsigned int *) &ddr->cs3_bnds;
+			pconfig  = (unsigned int *) &ddr->cs3_config;
+		}
+
+		printf("cs%u_bnds           = %08X\t%p\n", i, bnds, pbnds);
+		printf("cs%u_config         = %08X\t%p\n", i, config, pconfig);
+	}
+
+	/*
+	 * Due to inconsistencies between immap_85xx.h and immap_86xx.h,
+	 * you will have to modify the structure member names by hand
+	 * between architectures.
+	 */
+	printf("timing_cfg_3       = %08X\t%p\n",
+	       ddr->timing_cfg_3, &ddr->timing_cfg_3);
+	printf("timing_cfg_0       = %08X\t%p\n",
+	       ddr->timing_cfg_0, &ddr->timing_cfg_0);
+	printf("timing_cfg_1       = %08X\t%p\n",
+	       ddr->timing_cfg_1, &ddr->timing_cfg_1);
+	printf("timing_cfg_2       = %08X\t%p\n",
+	       ddr->timing_cfg_2, &ddr->timing_cfg_2);
+	printf("ddr_sdram_cfg      = %08X\t%p\n",
+	       ddr->sdram_cfg, &ddr->sdram_cfg);
+	printf("ddr_sdram_cfg_2    = %08X\t%p\n",
+	       ddr->sdram_cfg_2, &ddr->sdram_cfg_2);
+	printf("ddr_sdram_mode     = %08X\t%p\n",
+		ddr->sdram_mode, &ddr->sdram_mode);
+	printf("ddr_sdram_mode_2   = %08X\t%p\n",
+		ddr->sdram_mode_2, &ddr->sdram_mode_2);
+	printf("ddr_sdram_md_cntl  = %08X\t%p\n",
+		ddr->sdram_md_cntl, &ddr->sdram_md_cntl);
+	printf("ddr_sdram_interval = %08X\t%p\n",
+		ddr->sdram_interval, &ddr->sdram_interval);
+	printf("ddr_data_init      = %08X\t%p\n",
+		ddr->sdram_data_init, &ddr->sdram_data_init);
+	printf("ddr_sdram_clk_cntl = %08X\t%p\n",
+		ddr->sdram_clk_cntl, &ddr->sdram_clk_cntl);
+	printf("ddr_init_addr      = %08X\t%p\n",
+		ddr->init_addr, &ddr->init_addr);
+	printf("ddr_init_ext_addr  = %08X\t%p\n",
+		ddr->init_ext_addr, &ddr->init_ext_addr);
+}
+
+
+void fsl_ddr_set_memctl_regs(const fsl_memctl_config_regs_t *regs,
+				unsigned int ctrl_num)
+{
+	unsigned int i;
+	volatile ccsr_ddr_t *ddr = (void *)CFG_MPC85xx_DDR_ADDR;
+
+	if (ctrl_num) {
+		printf("%s unexpected ctrl_num = %u\n", __FUNCTION__, ctrl_num);
+		return;
+	}
+
+	for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
+		if (i == 0) {
+			ddr->cs0_bnds = regs->cs[i].bnds;
+			ddr->cs0_config = regs->cs[i].config;
+
+		} else if (i == 1) {
+			ddr->cs1_bnds = regs->cs[i].bnds;
+			ddr->cs1_config = regs->cs[i].config;
+
+		} else if (i == 2) {
+			ddr->cs2_bnds = regs->cs[i].bnds;
+			ddr->cs2_config = regs->cs[i].config;
+
+		} else if (i == 3) {
+			ddr->cs3_bnds = regs->cs[i].bnds;
+			ddr->cs3_config = regs->cs[i].config;
+		}
+	}
+
+	/* Someone decided to use different names from the documentation... */
+	ddr->timing_cfg_3       = regs->timing_cfg_3;
+	ddr->timing_cfg_0       = regs->timing_cfg_0;
+	ddr->timing_cfg_1       = regs->timing_cfg_1;
+	ddr->timing_cfg_2       = regs->timing_cfg_2;
+	ddr->sdram_cfg_2        = regs->ddr_sdram_cfg_2;
+	ddr->sdram_mode         = regs->ddr_sdram_mode;
+	ddr->sdram_mode_2       = regs->ddr_sdram_mode_2;
+	ddr->sdram_interval     = regs->ddr_sdram_interval;
+	ddr->sdram_data_init    = regs->ddr_data_init;
+	ddr->sdram_clk_cntl     = regs->ddr_sdram_clk_cntl;
+	ddr->init_addr          = regs->ddr_init_addr;
+	ddr->init_ext_addr      = regs->ddr_init_ext_addr;
+
+	/* FIXME: ECC? Need to program err_disable, err_sbe, and err_int_en */
+
+	/*
+	 * 200 painful micro-seconds must elapse between
+	 * the DDR clock setup and the DDR config enable.
+	 */
+	udelay(200);
+	asm volatile("sync;isync");
+
+	ddr->sdram_cfg = regs->ddr_sdram_cfg;
+
+	/* Poll DDR_SDRAM_CFG_2[D_INIT] bit until auto-data init is done. */
+	while (ddr->sdram_cfg_2 & 0x10) {
+		udelay(10000);		/* throttle polling rate */
+	}
+}
+
+unsigned int fsl_ddr_type_function(void)
+{
+	return SDRAM_TYPE_DDR2;
+}
+
+/*
+ * factors to consider for clock adjust:
+ * 	- number of chips on bus
+ * 	- position of slot
+ * 	- DDR1 vs. DDR2?
+ * 	- ???
+ *
+ * FIXME: need to figure out the function parameters necessary to compute
+ * FIXME: a clock adjust value
+ */
+unsigned int fsl_ddr_clk_adjust_function(void)
+{
+	return 7;
+}
+
+/*
+ * factors to consider for CPO:
+ * 	- frequency
+ * 	- ddr1 vs. ddr2
+ *
+ * FIXME: figure out how to compute or tabulate good values for this
+ */
+unsigned int fsl_ddr_cpo_override_function(void)
+{
+	return 10;
+}
+
+/*
+ * factors to consider for write data delay:
+ * 	- number of DIMMs
+ *
+ * 1 = 1/4 clock delay
+ * 2 = 1/2 clock delay
+ * 3 = 3/4 clock delay
+ * 4 = 1   clock delay
+ * 5 = 5/4 clock delay
+ * 6 = 3/2 clock delay
+ */
+unsigned int fsl_ddr_write_data_delay_function(void)
+{
+	return 3;
+}
+
+/*
+ * factors to consider for half-strength driver enable:
+ * 	- number of DIMMs installed
+ */
+unsigned int fsl_ddr_half_strength_driver_enable_function(void)
+{
+	return 0;
+}
diff --git a/board/freescale/mpc8548cds/mpc8548cds.c b/board/freescale/mpc8548cds/mpc8548cds.c
index 0b037cc..98752b8 100644
--- a/board/freescale/mpc8548cds/mpc8548cds.c
+++ b/board/freescale/mpc8548cds/mpc8548cds.c
@@ -25,6 +25,7 @@
 #include <common.h>
 #include <pci.h>
 #include <asm/processor.h>
+#include <asm/mmu.h>
 #include <asm/immap_85xx.h>
 #include <asm/immap_fsl_pci.h>
 #include <spd_sdram.h>
@@ -35,6 +36,7 @@
 #include "../common/cadmus.h"
 #include "../common/eeprom.h"
 #include "../common/via.h"
+#include "../cpu/mpc8xxx/fsl_ddr_sdram.h"
 
 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
 extern void ddr_enable_ecc(unsigned int dram_size);
@@ -111,7 +113,14 @@ initdram(int board_type)
 		udelay(200);
 	}
 #endif
-	dram_size = spd_sdram();
+
+	dram_size = fsl_ddr_sdram();
+	printf("dram_size = %u\n", dram_size);
+
+	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
+	printf("dram_size = %u after setup_ddr_tlbs\n", dram_size);
+
+	dram_size *= 0x100000;
 
 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
 	/*
@@ -119,6 +128,7 @@ initdram(int board_type)
 	 */
 	ddr_enable_ecc(dram_size);
 #endif
+
 	/*
 	 * SDRAM Initialization
 	 */
diff --git a/include/configs/MPC8548CDS.h b/include/configs/MPC8548CDS.h
index 33c5c93..ce1b00b 100644
--- a/include/configs/MPC8548CDS.h
+++ b/include/configs/MPC8548CDS.h
@@ -46,15 +46,7 @@
 
 #define CONFIG_TSEC_ENET		/* tsec ethernet support */
 #define CONFIG_ENV_OVERWRITE
-#define CONFIG_SPD_EEPROM		/* Use SPD EEPROM for DDR setup*/
-#define CONFIG_DDR_DLL			/* possible DLL fix needed */
-#undef CONFIG_DDR_2T_TIMING		/* Sets the 2T timing bit */
-
-#define CONFIG_DDR_ECC			/* only for ECC DDR module */
-#define CONFIG_ECC_INIT_VIA_DDRCONTROLLER	/* DDR controller or DMA? */
-#define CONFIG_MEM_INIT_VALUE		0xDeadBeef
 #define CONFIG_INTERRUPTS		/* enable pci, srio, ddr interrupts */
-
 #define CONFIG_FSL_LAW		1	/* Use common FSL init code */
 
 #define CONFIG_FSL_VIA
@@ -67,8 +59,6 @@
  */
 #define CONFIG_ASSUME_AMD_FLASH
 
-#define MPC85xx_DDR_SDRAM_CLK_CNTL	/* 85xx has clock control reg */
-
 #ifndef __ASSEMBLY__
 extern unsigned long get_clock_freq(void);
 #endif
@@ -106,10 +96,44 @@ extern unsigned long get_clock_freq(void);
 /*
  * DDR Setup
  */
+#define CONFIG_FSL_DDR2
+#undef CONFIG_FSL_DDR_INTERACTIVE
+#define CONFIG_SPD_EEPROM		/* Use SPD EEPROM for DDR setup*/
+#define CONFIG_DDR_SPD
+#define CONFIG_DDR_DLL			/* possible DLL fix needed */
+
+#undef CONFIG_ECC_INIT_VIA_DDRCONTROLLER	/* DDR controller or DMA? */
+#define CONFIG_MEM_INIT_VALUE	0xDeadBeef
+
 #define CFG_DDR_SDRAM_BASE	0x00000000	/* DDR is system memory*/
 #define CFG_SDRAM_BASE		CFG_DDR_SDRAM_BASE
 
-#define SPD_EEPROM_ADDRESS	0x51		/* DDR DIMM */
+
+/*
+ * Number of memory controllers on device
+ */
+#define CONFIG_NUM_DDR_CONTROLLERS	1
+
+/*
+ * Number of DIMM slots per memory controller
+ */
+#define CONFIG_DIMM_SLOTS_PER_CTLR	1
+
+/*
+ * Number of chip selects per memory controller
+ *
+ * The MPC8568 (the chip) has 4 chip selects per memory controller.
+ * However, the MPC8568DS (the board) has only 1 DIMM slot per memory
+ * controller, so therefore it only has 2 chip selects per memory
+ * controller that are actually connected.
+ */
+#define CONFIG_CHIP_SELECTS_PER_CTRL	(2 * CONFIG_DIMM_SLOTS_PER_CTLR)
+
+ /*
+  * I2C addresses of SPD EEPROMs
+  */
+#define SPD_EEPROM_ADDRESS1	0x51	/* CTLR 0 DIMM 0 */
+
 
 /*
  * Make sure required options are set
@@ -342,6 +366,9 @@ extern unsigned long get_clock_freq(void);
 #define CONFIG_OF_BOARD_SETUP		1
 #define CONFIG_OF_STDOUT_VIA_ALIAS	1
 
+#define CFG_64BIT_VSPRINTF	1
+#define CFG_64BIT_STRTOUL	1
+
 /*
  * I2C
  */
-- 
1.5.5.1



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