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-rw-r--r--cpu/arm1176/s3c64xx/interrupts.c5
-rw-r--r--cpu/arm946es/config.mk7
-rw-r--r--cpu/arm_intcm/config.mk7
-rw-r--r--cpu/ppc4xx/44x_spd_ddr2.c158
-rw-r--r--cpu/ppc4xx/4xx_enet.c168
-rw-r--r--cpu/ppc4xx/4xx_ibm_ddr2_autocalib.c1212
-rw-r--r--cpu/ppc4xx/Makefile3
-rw-r--r--cpu/ppc4xx/miiphy.c37
8 files changed, 1522 insertions, 75 deletions
diff --git a/cpu/arm1176/s3c64xx/interrupts.c b/cpu/arm1176/s3c64xx/interrupts.c
index 8356ae4..e34369f 100644
--- a/cpu/arm1176/s3c64xx/interrupts.c
+++ b/cpu/arm1176/s3c64xx/interrupts.c
@@ -41,6 +41,7 @@
#include <common.h>
#include <asm/proc-armv/ptrace.h>
#include <s3c6400.h>
+#include <div64.h>
static ulong timer_load_val;
@@ -148,7 +149,9 @@ void reset_timer(void)
ulong get_timer_masked(void)
{
- return get_ticks() / (timer_load_val / (100 * CFG_HZ));
+ unsigned long long res = get_ticks();
+ do_div (res, (timer_load_val / (100 * CFG_HZ)));
+ return res;
}
ulong get_timer(ulong base)
diff --git a/cpu/arm946es/config.mk b/cpu/arm946es/config.mk
index 81ca288..f774c7e 100644
--- a/cpu/arm946es/config.mk
+++ b/cpu/arm946es/config.mk
@@ -25,3 +25,10 @@ PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
-msoft-float
PLATFORM_CPPFLAGS += -march=armv4
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# =========================================================================
+PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
diff --git a/cpu/arm_intcm/config.mk b/cpu/arm_intcm/config.mk
index 81ca288..f774c7e 100644
--- a/cpu/arm_intcm/config.mk
+++ b/cpu/arm_intcm/config.mk
@@ -25,3 +25,10 @@ PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -ffixed-r8 \
-msoft-float
PLATFORM_CPPFLAGS += -march=armv4
+# =========================================================================
+#
+# Supply options according to compiler version
+#
+# =========================================================================
+PLATFORM_CPPFLAGS +=$(call cc-option,-mapcs-32,-mabi=apcs-gnu)
+PLATFORM_RELFLAGS +=$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
diff --git a/cpu/ppc4xx/44x_spd_ddr2.c b/cpu/ppc4xx/44x_spd_ddr2.c
index 15250d4..f1d7684 100644
--- a/cpu/ppc4xx/44x_spd_ddr2.c
+++ b/cpu/ppc4xx/44x_spd_ddr2.c
@@ -60,8 +60,6 @@
"SDRAM_" #mnemonic, SDRAM_##mnemonic, data); \
} while (0)
-static inline void ppc4xx_ibm_ddr2_register_dump(void);
-
#if defined(CONFIG_SPD_EEPROM)
/*-----------------------------------------------------------------------------+
@@ -260,62 +258,19 @@ static void program_ecc_addr(unsigned long start_address,
unsigned long num_bytes,
unsigned long tlb_word2_i_value);
#endif
+#if !defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
static void program_DQS_calibration(unsigned long *dimm_populated,
- unsigned char *iic0_dimm_addr,
- unsigned long num_dimm_banks);
+ unsigned char *iic0_dimm_addr,
+ unsigned long num_dimm_banks);
#ifdef HARD_CODED_DQS /* calibration test with hardvalues */
static void test(void);
#else
static void DQS_calibration_process(void);
#endif
+#endif
int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
void dcbz_area(u32 start_address, u32 num_bytes);
-static u32 mfdcr_any(u32 dcr)
-{
- u32 val;
-
- switch (dcr) {
- case SDRAM_R0BAS + 0:
- val = mfdcr(SDRAM_R0BAS + 0);
- break;
- case SDRAM_R0BAS + 1:
- val = mfdcr(SDRAM_R0BAS + 1);
- break;
- case SDRAM_R0BAS + 2:
- val = mfdcr(SDRAM_R0BAS + 2);
- break;
- case SDRAM_R0BAS + 3:
- val = mfdcr(SDRAM_R0BAS + 3);
- break;
- default:
- printf("DCR %d not defined in case statement!!!\n", dcr);
- val = 0; /* just to satisfy the compiler */
- }
-
- return val;
-}
-
-static void mtdcr_any(u32 dcr, u32 val)
-{
- switch (dcr) {
- case SDRAM_R0BAS + 0:
- mtdcr(SDRAM_R0BAS + 0, val);
- break;
- case SDRAM_R0BAS + 1:
- mtdcr(SDRAM_R0BAS + 1, val);
- break;
- case SDRAM_R0BAS + 2:
- mtdcr(SDRAM_R0BAS + 2, val);
- break;
- case SDRAM_R0BAS + 3:
- mtdcr(SDRAM_R0BAS + 3, val);
- break;
- default:
- printf("DCR %d not defined in case statement!!!\n", dcr);
- }
-}
-
static unsigned char spd_read(uchar chip, uint addr)
{
unsigned char data[2];
@@ -609,7 +564,11 @@ phys_size_t initdram(int board_type)
/*------------------------------------------------------------------
* DQS calibration.
*-----------------------------------------------------------------*/
+#if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
+ DQS_autocalibration();
+#else
program_DQS_calibration(dimm_populated, iic0_dimm_addr, num_dimm_banks);
+#endif
#ifdef CONFIG_DDR_ECC
/*------------------------------------------------------------------
@@ -2329,18 +2288,6 @@ static unsigned long is_ecc_enabled(void)
return ecc;
}
-static void blank_string(int size)
-{
- int i;
-
- for (i=0; i<size; i++)
- putc('\b');
- for (i=0; i<size; i++)
- putc(' ');
- for (i=0; i<size; i++)
- putc('\b');
-}
-
#ifdef CONFIG_DDR_ECC
/*-----------------------------------------------------------------------------+
* program_ecc.
@@ -2468,6 +2415,7 @@ static void program_ecc_addr(unsigned long start_address,
}
#endif
+#if !defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
/*-----------------------------------------------------------------------------+
* program_DQS_calibration.
*-----------------------------------------------------------------------------*/
@@ -3001,7 +2949,8 @@ static void test(void)
(ppcMfdcr_sdram(SDRAM_MCOPT1) & ~SDRAM_MCOPT1_MCHK_MASK)
| ecc_temp);
}
-#endif
+#endif /* !HARD_CODED_DQS */
+#endif /* !defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION) */
#else /* CONFIG_SPD_EEPROM */
@@ -3104,9 +3053,12 @@ phys_size_t initdram(int board_type)
/* Set Delay Control Registers */
mtsdram(SDRAM_DLCR, CFG_SDRAM0_DLCR);
+
+#if !defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
mtsdram(SDRAM_RDCC, CFG_SDRAM0_RDCC);
mtsdram(SDRAM_RQDC, CFG_SDRAM0_RQDC);
mtsdram(SDRAM_RFDC, CFG_SDRAM0_RFDC);
+#endif /* !CONFIG_PPC4xx_DDR_AUTOCALIBRATION */
/*
* Enable Controller by SDRAM0_MCOPT2[DCEN] = 1:
@@ -3115,18 +3067,98 @@ phys_size_t initdram(int board_type)
mfsdram(SDRAM_MCOPT2, val);
mtsdram(SDRAM_MCOPT2, val | SDRAM_MCOPT2_DCEN_ENABLE);
+#if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
+#if !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+ /*------------------------------------------------------------------
+ | DQS calibration.
+ +-----------------------------------------------------------------*/
+ DQS_autocalibration();
+#endif /* !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) */
+#endif /* CONFIG_PPC4xx_DDR_AUTOCALIBRATION */
+
#if defined(CONFIG_DDR_ECC)
ecc_init(CFG_SDRAM_BASE, CFG_MBYTES_SDRAM << 20);
#endif /* defined(CONFIG_DDR_ECC) */
ppc4xx_ibm_ddr2_register_dump();
+
+#if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
+ /*
+ * Clear potential errors resulting from auto-calibration.
+ * If not done, then we could get an interrupt later on when
+ * exceptions are enabled.
+ */
+ set_mcsr(get_mcsr());
+#endif /* CONFIG_PPC4xx_DDR_AUTOCALIBRATION */
+
#endif /* !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL) */
return (CFG_MBYTES_SDRAM << 20);
}
#endif /* CONFIG_SPD_EEPROM */
-static inline void ppc4xx_ibm_ddr2_register_dump(void)
+#if !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+#if defined(CONFIG_440)
+u32 mfdcr_any(u32 dcr)
+{
+ u32 val;
+
+ switch (dcr) {
+ case SDRAM_R0BAS + 0:
+ val = mfdcr(SDRAM_R0BAS + 0);
+ break;
+ case SDRAM_R0BAS + 1:
+ val = mfdcr(SDRAM_R0BAS + 1);
+ break;
+ case SDRAM_R0BAS + 2:
+ val = mfdcr(SDRAM_R0BAS + 2);
+ break;
+ case SDRAM_R0BAS + 3:
+ val = mfdcr(SDRAM_R0BAS + 3);
+ break;
+ default:
+ printf("DCR %d not defined in case statement!!!\n", dcr);
+ val = 0; /* just to satisfy the compiler */
+ }
+
+ return val;
+}
+
+void mtdcr_any(u32 dcr, u32 val)
+{
+ switch (dcr) {
+ case SDRAM_R0BAS + 0:
+ mtdcr(SDRAM_R0BAS + 0, val);
+ break;
+ case SDRAM_R0BAS + 1:
+ mtdcr(SDRAM_R0BAS + 1, val);
+ break;
+ case SDRAM_R0BAS + 2:
+ mtdcr(SDRAM_R0BAS + 2, val);
+ break;
+ case SDRAM_R0BAS + 3:
+ mtdcr(SDRAM_R0BAS + 3, val);
+ break;
+ default:
+ printf("DCR %d not defined in case statement!!!\n", dcr);
+ }
+}
+#endif /* defined(CONFIG_440) */
+
+void blank_string(int size)
+{
+ int i;
+
+ for (i = 0; i < size; i++)
+ putc('\b');
+ for (i = 0; i < size; i++)
+ putc(' ');
+ for (i = 0; i < size; i++)
+ putc('\b');
+}
+#endif /* !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) */
+
+inline void ppc4xx_ibm_ddr2_register_dump(void)
{
#if defined(DEBUG)
printf("\nPPC4xx IBM DDR2 Register Dump:\n");
diff --git a/cpu/ppc4xx/4xx_enet.c b/cpu/ppc4xx/4xx_enet.c
index 8a38335..6d4d043 100644
--- a/cpu/ppc4xx/4xx_enet.c
+++ b/cpu/ppc4xx/4xx_enet.c
@@ -198,6 +198,7 @@
#define BI_PHYMODE_RMII 8
#endif
#endif
+#define BI_PHYMODE_SGMII 9
#if defined(CONFIG_440SP) || defined(CONFIG_440SPE) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
@@ -216,6 +217,52 @@
#define MAL_RX_CHAN_MUL 1
#endif
+/*--------------------------------------------------------------------+
+ * Fixed PHY (PHY-less) support for Ethernet Ports.
+ *--------------------------------------------------------------------*/
+
+/*
+ * Some boards do not have a PHY for each ethernet port. These ports
+ * are known as Fixed PHY (or PHY-less) ports. For such ports, set
+ * the appropriate CONFIG_PHY_ADDR equal to CONFIG_FIXED_PHY and
+ * then define CFG_FIXED_PHY_PORTS to define what the speed and
+ * duplex should be for these ports in the board configuration
+ * file.
+ *
+ * For Example:
+ * #define CONFIG_FIXED_PHY 0xFFFFFFFF
+ *
+ * #define CONFIG_PHY_ADDR CONFIG_FIXED_PHY
+ * #define CONFIG_PHY1_ADDR 1
+ * #define CONFIG_PHY2_ADDR CONFIG_FIXED_PHY
+ * #define CONFIG_PHY3_ADDR 3
+ *
+ * #define CFG_FIXED_PHY_PORT(devnum,speed,duplex) \
+ * {devnum, speed, duplex},
+ *
+ * #define CFG_FIXED_PHY_PORTS \
+ * CFG_FIXED_PHY_PORT(0,1000,FULL) \
+ * CFG_FIXED_PHY_PORT(2,100,HALF)
+ */
+
+#ifndef CONFIG_FIXED_PHY
+#define CONFIG_FIXED_PHY 0xFFFFFFFF /* Fixed PHY (PHY-less) */
+#endif
+
+#ifndef CFG_FIXED_PHY_PORTS
+#define CFG_FIXED_PHY_PORTS /* default is an empty array */
+#endif
+
+struct fixed_phy_port {
+ unsigned int devnum; /* ethernet port */
+ unsigned int speed; /* specified speed 10,100 or 1000 */
+ unsigned int duplex; /* specified duplex FULL or HALF */
+};
+
+static const struct fixed_phy_port fixed_phy_port[] = {
+ CFG_FIXED_PHY_PORTS /* defined in board configuration file */
+};
+
/*-----------------------------------------------------------------------------+
* Global variables. TX and RX descriptors and buffers.
*-----------------------------------------------------------------------------*/
@@ -611,8 +658,17 @@ int ppc_4xx_eth_setup_bridge(int devnum, bd_t * bis)
#if defined(CONFIG_460EX)
mode = 9;
+ mfsdr(SDR0_ETH_CFG, eth_cfg);
+ if (((eth_cfg & SDR0_ETH_CFG_SGMII0_ENABLE) > 0) &&
+ ((eth_cfg & SDR0_ETH_CFG_SGMII1_ENABLE) > 0))
+ mode = 11; /* config SGMII */
#else
mode = 10;
+ mfsdr(SDR0_ETH_CFG, eth_cfg);
+ if (((eth_cfg & SDR0_ETH_CFG_SGMII0_ENABLE) > 0) &&
+ ((eth_cfg & SDR0_ETH_CFG_SGMII1_ENABLE) > 0) &&
+ ((eth_cfg & SDR0_ETH_CFG_SGMII2_ENABLE) > 0))
+ mode = 12; /* config SGMII */
#endif
/* TODO:
@@ -635,6 +691,8 @@ int ppc_4xx_eth_setup_bridge(int devnum, bd_t * bis)
/*
* Right now only 2*RGMII is supported. Please extend when needed.
* sr - 2008-02-19
+ * Add SGMII support.
+ * vg - 2008-07-28
*/
switch (mode) {
case 1:
@@ -761,6 +819,20 @@ int ppc_4xx_eth_setup_bridge(int devnum, bd_t * bis)
bis->bi_phymode[2] = BI_PHYMODE_RGMII;
bis->bi_phymode[3] = BI_PHYMODE_RGMII;
break;
+ case 11:
+ /* 2 SGMII - 460EX */
+ bis->bi_phymode[0] = BI_PHYMODE_SGMII;
+ bis->bi_phymode[1] = BI_PHYMODE_SGMII;
+ bis->bi_phymode[2] = BI_PHYMODE_NONE;
+ bis->bi_phymode[3] = BI_PHYMODE_NONE;
+ break;
+ case 12:
+ /* 3 SGMII - 460GT */
+ bis->bi_phymode[0] = BI_PHYMODE_SGMII;
+ bis->bi_phymode[1] = BI_PHYMODE_SGMII;
+ bis->bi_phymode[2] = BI_PHYMODE_SGMII;
+ bis->bi_phymode[3] = BI_PHYMODE_NONE;
+ break;
default:
break;
}
@@ -945,9 +1017,50 @@ static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis)
out_be32((void *)EMAC_M1 + hw_p->hw_addr, mode_reg);
#endif /* defined(CONFIG_440GX) || defined(CONFIG_440SP) */
+#if defined(CONFIG_GPCS_PHY_ADDR) || defined(CONFIG_GPCS_PHY1_ADDR) || \
+ defined(CONFIG_GPCS_PHY2_ADDR) || defined(CONFIG_GPCS_PHY3_ADDR)
+ if (bis->bi_phymode[devnum] == BI_PHYMODE_SGMII) {
+ /*
+ * In SGMII mode, GPCS access is needed for
+ * communication with the internal SGMII SerDes.
+ */
+ switch (devnum) {
+#if defined(CONFIG_GPCS_PHY_ADDR)
+ case 0:
+ reg = CONFIG_GPCS_PHY_ADDR;
+ break;
+#endif
+#if defined(CONFIG_GPCS_PHY1_ADDR)
+ case 1:
+ reg = CONFIG_GPCS_PHY1_ADDR;
+ break;
+#endif
+#if defined(CONFIG_GPCS_PHY2_ADDR)
+ case 2:
+ reg = CONFIG_GPCS_PHY2_ADDR;
+ break;
+#endif
+#if defined(CONFIG_GPCS_PHY3_ADDR)
+ case 3:
+ reg = CONFIG_GPCS_PHY3_ADDR;
+ break;
+#endif
+ }
+
+ mode_reg = in_be32((void *)EMAC_M1 + hw_p->hw_addr);
+ mode_reg |= EMAC_M1_MF_1000GPCS | EMAC_M1_IPPA_SET(reg);
+ out_be32((void *)EMAC_M1 + hw_p->hw_addr, mode_reg);
+
+ /* Configure GPCS interface to recommended setting for SGMII */
+ miiphy_reset(dev->name, reg);
+ miiphy_write(dev->name, reg, 0x04, 0x8120); /* AsymPause, FDX */
+ miiphy_write(dev->name, reg, 0x07, 0x2801); /* msg_pg, toggle */
+ miiphy_write(dev->name, reg, 0x00, 0x0140); /* 1Gbps, FDX */
+ }
+#endif /* defined(CONFIG_GPCS_PHY_ADDR) */
+
/* wait for PHY to complete auto negotiation */
reg_short = 0;
-#ifndef CONFIG_CS8952_PHY
switch (devnum) {
case 0:
reg = CONFIG_PHY_ADDR;
@@ -974,6 +1087,9 @@ static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis)
bis->bi_phynum[devnum] = reg;
+ if (reg == CONFIG_FIXED_PHY)
+ goto get_speed;
+
#if defined(CONFIG_PHY_RESET)
/*
* Reset the phy, only if its the first time through
@@ -986,6 +1102,27 @@ static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis)
miiphy_write (dev->name, reg, 0x09, 0x0e00);
miiphy_write (dev->name, reg, 0x04, 0x01e1);
#endif
+#if defined(CONFIG_M88E1112_PHY)
+ if (bis->bi_phymode[devnum] == BI_PHYMODE_SGMII) {
+ /*
+ * Marvell 88E1112 PHY needs to have the SGMII MAC
+ * interace (page 2) properly configured to
+ * communicate with the 460EX/GT GPCS interface.
+ */
+
+ /* Set access to Page 2 */
+ miiphy_write(dev->name, reg, 0x16, 0x0002);
+
+ miiphy_write(dev->name, reg, 0x00, 0x0040); /* 1Gbps */
+ miiphy_read(dev->name, reg, 0x1a, &reg_short);
+ reg_short |= 0x8000; /* bypass Auto-Negotiation */
+ miiphy_write(dev->name, reg, 0x1a, reg_short);
+ miiphy_reset(dev->name, reg); /* reset MAC interface */
+
+ /* Reset access to Page 0 */
+ miiphy_write(dev->name, reg, 0x16, 0x0000);
+ }
+#endif /* defined(CONFIG_M88E1112_PHY) */
miiphy_reset (dev->name, reg);
#if defined(CONFIG_440GX) || \
@@ -1022,7 +1159,7 @@ static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis)
miiphy_write (dev->name, reg, 0x1f, 0x0000);
/* end Vitesse/Cicada errata */
}
-#endif
+#endif /* defined(CONFIG_CIS8201_PHY) */
#if defined(CONFIG_ET1011C_PHY)
/*
@@ -1041,9 +1178,9 @@ static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis)
miiphy_write(dev->name, reg, 0x1c, 0x74f0);
}
-#endif
+#endif /* defined(CONFIG_ET1011C_PHY) */
-#endif
+#endif /* defined(CONFIG_440GX) ... */
/* Start/Restart autonegotiation */
phy_setup_aneg (dev->name, reg);
udelay (1000);
@@ -1073,15 +1210,30 @@ static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis)
}
udelay (1000); /* 1 ms */
miiphy_read (dev->name, reg, PHY_BMSR, &reg_short);
-
}
puts (" done\n");
udelay (500000); /* another 500 ms (results in faster booting) */
}
-#endif /* #ifndef CONFIG_CS8952_PHY */
- speed = miiphy_speed (dev->name, reg);
- duplex = miiphy_duplex (dev->name, reg);
+get_speed:
+ if (reg == CONFIG_FIXED_PHY) {
+ for (i = 0; i < ARRAY_SIZE(fixed_phy_port); i++) {
+ if (devnum == fixed_phy_port[i].devnum) {
+ speed = fixed_phy_port[i].speed;
+ duplex = fixed_phy_port[i].duplex;
+ break;
+ }
+ }
+
+ if (i == ARRAY_SIZE(fixed_phy_port)) {
+ printf("ERROR: PHY (%s) not configured correctly!\n",
+ dev->name);
+ return -1;
+ }
+ } else {
+ speed = miiphy_speed(dev->name, reg);
+ duplex = miiphy_duplex(dev->name, reg);
+ }
if (hw_p->print_speed) {
hw_p->print_speed = 0;
diff --git a/cpu/ppc4xx/4xx_ibm_ddr2_autocalib.c b/cpu/ppc4xx/4xx_ibm_ddr2_autocalib.c
new file mode 100644
index 0000000..83b9883
--- /dev/null
+++ b/cpu/ppc4xx/4xx_ibm_ddr2_autocalib.c
@@ -0,0 +1,1212 @@
+/*
+ * cpu/ppc4xx/4xx_ibm_ddr2_autocalib.c
+ * This SPD SDRAM detection code supports AMCC PPC44x cpu's with a
+ * DDR2 controller (non Denali Core). Those currently are:
+ *
+ * 405: 405EX
+ * 440/460: 440SP/440SPe/460EX/460GT/460SX
+ *
+ * (C) Copyright 2008 Applied Micro Circuits Corporation
+ * Adam Graham <agraham@amcc.com>
+ *
+ * (C) Copyright 2007-2008
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * COPYRIGHT AMCC CORPORATION 2004
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+/* define DEBUG for debugging output (obviously ;-)) */
+#undef DEBUG
+
+#include <common.h>
+#include <ppc4xx.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+
+#if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
+
+/*
+ * Only compile the DDR auto-calibration code for NOR boot and
+ * not for NAND boot (NAND SPL and NAND U-Boot - NUB)
+ */
+#if !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+
+#define MAXBXCF 4
+#define SDRAM_RXBAS_SHIFT_1M 20
+
+#if defined(CFG_DECREMENT_PATTERNS)
+#define NUMMEMTESTS 24
+#else
+#define NUMMEMTESTS 8
+#endif /* CFG_DECREMENT_PATTERNS */
+#define NUMLOOPS 1 /* configure as you deem approporiate */
+#define NUMMEMWORDS 16
+
+/* Private Structure Definitions */
+
+struct autocal_regs {
+ u32 rffd;
+ u32 rqfd;
+};
+
+struct ddrautocal {
+ u32 rffd;
+ u32 rffd_min;
+ u32 rffd_max;
+ u32 rffd_size;
+ u32 rqfd;
+ u32 rqfd_size;
+ u32 rdcc;
+ u32 flags;
+};
+
+struct sdram_timing {
+ u32 wrdtr;
+ u32 clktr;
+};
+
+struct sdram_timing_clks {
+ u32 wrdtr;
+ u32 clktr;
+ u32 rdcc;
+ u32 flags;
+};
+
+struct autocal_clks {
+ struct sdram_timing_clks clocks;
+ struct ddrautocal autocal;
+};
+
+/*--------------------------------------------------------------------------+
+ * Prototypes
+ *--------------------------------------------------------------------------*/
+#if defined(CONFIG_PPC4xx_DDR_METHOD_A)
+static u32 DQS_calibration_methodA(struct ddrautocal *);
+static u32 program_DQS_calibration_methodA(struct ddrautocal *);
+#else
+static u32 DQS_calibration_methodB(struct ddrautocal *);
+static u32 program_DQS_calibration_methodB(struct ddrautocal *);
+#endif
+static int short_mem_test(u32 *);
+
+/*
+ * To provide an interface for board specific config values in this common
+ * DDR setup code, we implement he "weak" default functions here. They return
+ * the default value back to the caller.
+ *
+ * Please see include/configs/yucca.h for an example fora board specific
+ * implementation.
+ */
+
+#if !defined(CONFIG_SPD_EEPROM)
+u32 __ddr_wrdtr(u32 default_val)
+{
+ return default_val;
+}
+u32 ddr_wrdtr(u32) __attribute__((weak, alias("__ddr_wrdtr")));
+
+u32 __ddr_clktr(u32 default_val)
+{
+ return default_val;
+}
+u32 ddr_clktr(u32) __attribute__((weak, alias("__ddr_clktr")));
+
+/*
+ * Board-specific Platform code can reimplement spd_ddr_init_hang () if needed
+ */
+void __spd_ddr_init_hang(void)
+{
+ hang();
+}
+void
+spd_ddr_init_hang(void) __attribute__((weak, alias("__spd_ddr_init_hang")));
+#endif /* defined(CONFIG_SPD_EEPROM) */
+
+ulong __ddr_scan_option(ulong default_val)
+{
+ return default_val;
+}
+ulong ddr_scan_option(ulong) __attribute__((weak, alias("__ddr_scan_option")));
+
+static u32 *get_membase(int bxcr_num)
+{
+ ulong bxcf;
+ u32 *membase;
+
+#if defined(SDRAM_R0BAS)
+ /* BAS from Memory Queue rank reg. */
+ membase =
+ (u32 *)(SDRAM_RXBAS_SDBA_DECODE(mfdcr_any(SDRAM_R0BAS+bxcr_num)));
+ bxcf = 0; /* just to satisfy the compiler */
+#else
+ /* BAS from SDRAM_MBxCF mem rank reg. */
+ mfsdram(SDRAM_MB0CF + (bxcr_num<<2), bxcf);
+ membase = (u32 *)((bxcf & 0xfff80000) << 3);
+#endif
+
+ return membase;
+}
+
+static inline void ecc_clear_status_reg(void)
+{
+ mtsdram(SDRAM_ECCCR, 0xffffffff);
+#if defined(SDRAM_R0BAS)
+ mtdcr(SDRAM_ERRSTATLL, 0xffffffff);
+#endif
+}
+
+static int ecc_check_status_reg(void)
+{
+ u32 ecc_status;
+
+ /*
+ * Compare suceeded, now check
+ * if got ecc error. If got an
+ * ecc error, then don't count
+ * this as a passing value
+ */
+ mfsdram(SDRAM_ECCCR, ecc_status);
+ if (ecc_status != 0x00000000) {
+ /* clear on error */
+ ecc_clear_status_reg();
+ /* ecc check failure */
+ return 0;
+ }
+ ecc_clear_status_reg();
+ sync();
+
+ return 1;
+}
+
+/* return 1 if passes, 0 if fail */
+static int short_mem_test(u32 *base_address)
+{
+ int i, j, l;
+ u32 ecc_mode = 0;
+
+ ulong test[NUMMEMTESTS][NUMMEMWORDS] = {
+ /* 0 */ {0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF,
+ 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF,
+ 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF,
+ 0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF},
+ /* 1 */ {0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000,
+ 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000,
+ 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000,
+ 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000},
+ /* 2 */ {0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555,
+ 0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555,
+ 0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555,
+ 0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555},
+ /* 3 */ {0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA,
+ 0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA,
+ 0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA,
+ 0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA},
+ /* 4 */ {0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A,
+ 0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A,
+ 0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A,
+ 0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A},
+ /* 5 */ {0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5,
+ 0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5,
+ 0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5,
+ 0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5},
+ /* 6 */ {0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA,
+ 0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA,
+ 0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA,
+ 0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA},
+ /* 7 */ {0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55,
+ 0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55,
+ 0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55,
+ 0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55},
+
+#if defined(CFG_DECREMENT_PATTERNS)
+ /* 8 */ {0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
+ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
+ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,
+ 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff},
+ /* 9 */ {0xfffefffe, 0xfffefffe, 0xfffefffe, 0xfffefffe,
+ 0xfffefffe, 0xfffefffe, 0xfffefffe, 0xfffefffe,
+ 0xfffefffe, 0xfffefffe, 0xfffefffe, 0xfffefffe,
+ 0xfffefffe, 0xfffefffe, 0xfffefffe, 0xfffefffe},
+ /* 10 */{0xfffdfffd, 0xfffdfffd, 0xfffdffff, 0xfffdfffd,
+ 0xfffdfffd, 0xfffdfffd, 0xfffdffff, 0xfffdfffd,
+ 0xfffdfffd, 0xfffdfffd, 0xfffdffff, 0xfffdfffd,
+ 0xfffdfffd, 0xfffdfffd, 0xfffdffff, 0xfffdfffd},
+ /* 11 */{0xfffcfffc, 0xfffcfffc, 0xfffcfffc, 0xfffcfffc,
+ 0xfffcfffc, 0xfffcfffc, 0xfffcfffc, 0xfffcfffc,
+ 0xfffcfffc, 0xfffcfffc, 0xfffcfffc, 0xfffcfffc,
+ 0xfffcfffc, 0xfffcfffc, 0xfffcfffc, 0xfffcfffc},
+ /* 12 */{0xfffbfffb, 0xfffffffb, 0xfffffffb, 0xfffffffb,
+ 0xfffbfffb, 0xfffffffb, 0xfffffffb, 0xfffffffb,
+ 0xfffbfffb, 0xfffffffb, 0xfffffffb, 0xfffffffb,
+ 0xfffbfffb, 0xfffffffb, 0xfffffffb, 0xfffffffb},
+ /* 13 */{0xfffafffa, 0xfffafffa, 0xfffffffa, 0xfffafffa,
+ 0xfffafffa, 0xfffafffa, 0xfffafffa, 0xfffafffa,
+ 0xfffafffa, 0xfffafffa, 0xfffafffa, 0xfffafffa,
+ 0xfffafffa, 0xfffafffa, 0xfffafffa, 0xfffafffa},
+ /* 14 */{0xfff9fff9, 0xfff9fff9, 0xfff9fff9, 0xfff9fff9,
+ 0xfff9fff9, 0xfff9fff9, 0xfff9fff9, 0xfff9fff9,
+ 0xfff9fff9, 0xfff9fff9, 0xfff9fff9, 0xfff9fff9,
+ 0xfff9fff9, 0xfff9fff9, 0xfff9fff9, 0xfff9fff9},
+ /* 15 */{0xfff8fff8, 0xfff8fff8, 0xfff8fff8, 0xfff8fff8,
+ 0xfff8fff8, 0xfff8fff8, 0xfff8fff8, 0xfff8fff8,
+ 0xfff8fff8, 0xfff8fff8, 0xfff8fff8, 0xfff8fff8,
+ 0xfff8fff8, 0xfff8fff8, 0xfff8fff8, 0xfff8fff8},
+ /* 16 */{0xfff7fff7, 0xfff7ffff, 0xfff7fff7, 0xfff7fff7,
+ 0xfff7fff7, 0xfff7ffff, 0xfff7fff7, 0xfff7fff7,
+ 0xfff7fff7, 0xfff7ffff, 0xfff7fff7, 0xfff7fff7,
+ 0xfff7ffff, 0xfff7ffff, 0xfff7fff7, 0xfff7fff7},
+ /* 17 */{0xfff6fff5, 0xfff6ffff, 0xfff6fff6, 0xfff6fff7,
+ 0xfff6fff5, 0xfff6ffff, 0xfff6fff6, 0xfff6fff7,
+ 0xfff6fff5, 0xfff6ffff, 0xfff6fff6, 0xfff6fff7,
+ 0xfff6fff5, 0xfff6ffff, 0xfff6fff6, 0xfff6fff7},
+ /* 18 */{0xfff5fff4, 0xfff5ffff, 0xfff5fff5, 0xfff5fff5,
+ 0xfff5fff4, 0xfff5ffff, 0xfff5fff5, 0xfff5fff5,
+ 0xfff5fff4, 0xfff5ffff, 0xfff5fff5, 0xfff5fff5,
+ 0xfff5fff4, 0xfff5ffff, 0xfff5fff5, 0xfff5fff5},
+ /* 19 */{0xfff4fff3, 0xfff4ffff, 0xfff4fff4, 0xfff4fff4,
+ 0xfff4fff3, 0xfff4ffff, 0xfff4fff4, 0xfff4fff4,
+ 0xfff4fff3, 0xfff4ffff, 0xfff4fff4, 0xfff4fff4,
+ 0xfff4fff3, 0xfff4ffff, 0xfff4fff4, 0xfff4fff4},
+ /* 20 */{0xfff3fff2, 0xfff3ffff, 0xfff3fff3, 0xfff3fff3,
+ 0xfff3fff2, 0xfff3ffff, 0xfff3fff3, 0xfff3fff3,
+ 0xfff3fff2, 0xfff3ffff, 0xfff3fff3, 0xfff3fff3,
+ 0xfff3fff2, 0xfff3ffff, 0xfff3fff3, 0xfff3fff3},
+ /* 21 */{0xfff2ffff, 0xfff2ffff, 0xfff2fff2, 0xfff2fff2,
+ 0xfff2ffff, 0xfff2ffff, 0xfff2fff2, 0xfff2fff2,
+ 0xfff2ffff, 0xfff2ffff, 0xfff2fff2, 0xfff2fff2,
+ 0xfff2ffff, 0xfff2ffff, 0xfff2fff2, 0xfff2fff2},
+ /* 22 */{0xfff1ffff, 0xfff1ffff, 0xfff1fff1, 0xfff1fff1,
+ 0xfff1ffff, 0xfff1ffff, 0xfff1fff1, 0xfff1fff1,
+ 0xfff1ffff, 0xfff1ffff, 0xfff1fff1, 0xfff1fff1,
+ 0xfff1ffff, 0xfff1ffff, 0xfff1fff1, 0xfff1fff1},
+ /* 23 */{0xfff0fff0, 0xfff0fff0, 0xfff0fff0, 0xfff0fff0,
+ 0xfff0fff0, 0xfff0fff0, 0xfff0fff0, 0xfff0fff0,
+ 0xfff0fff0, 0xfff0fff0, 0xfff0fff0, 0xfff0fff0,
+ 0xfff0fff0, 0xfff0fffe, 0xfff0fff0, 0xfff0fff0},
+#endif /* CFG_DECREMENT_PATTERNS */
+ };
+
+ mfsdram(SDRAM_MCOPT1, ecc_mode);
+ if ((ecc_mode & SDRAM_MCOPT1_MCHK_CHK_REP) ==
+ SDRAM_MCOPT1_MCHK_CHK_REP) {
+ ecc_clear_status_reg();
+ sync();
+ ecc_mode = 1;
+ } else {
+ ecc_mode = 0;
+ }
+
+ /*
+ * Run the short memory test.
+ */
+ for (i = 0; i < NUMMEMTESTS; i++) {
+ for (j = 0; j < NUMMEMWORDS; j++) {
+ base_address[j] = test[i][j];
+ ppcDcbf((ulong)&(base_address[j]));
+ }
+ sync();
+ for (l = 0; l < NUMLOOPS; l++) {
+ for (j = 0; j < NUMMEMWORDS; j++) {
+ if (base_address[j] != test[i][j]) {
+ ppcDcbf((u32)&(base_address[j]));
+ return 0;
+ } else {
+ if (ecc_mode) {
+ if (!ecc_check_status_reg())
+ return 0;
+ }
+ }
+ ppcDcbf((u32)&(base_address[j]));
+ } /* for (j = 0; j < NUMMEMWORDS; j++) */
+ sync();
+ } /* for (l=0; l<NUMLOOPS; l++) */
+ }
+
+ return 1;
+}
+
+#if defined(CONFIG_PPC4xx_DDR_METHOD_A)
+/*-----------------------------------------------------------------------------+
+| program_DQS_calibration_methodA.
++-----------------------------------------------------------------------------*/
+static u32 program_DQS_calibration_methodA(struct ddrautocal *ddrcal)
+{
+ u32 pass_result = 0;
+
+#ifdef DEBUG
+ ulong temp;
+
+ mfsdram(SDRAM_RDCC, temp);
+ debug("<%s>SDRAM_RDCC=0x%08x\n", __func__, temp);
+#endif
+
+ pass_result = DQS_calibration_methodA(ddrcal);
+
+ return pass_result;
+}
+
+/*
+ * DQS_calibration_methodA()
+ *
+ * Autocalibration Method A
+ *
+ * ARRAY [Entire DQS Range] DQS_Valid_Window ; initialized to all zeros
+ * ARRAY [Entire FDBK Range] FDBK_Valid_Window; initialized to all zeros
+ * MEMWRITE(addr, expected_data);
+ * for (i = 0; i < Entire DQS Range; i++) { RQDC.RQFD
+ * for (j = 0; j < Entire FDBK Range; j++) { RFDC.RFFD
+ * MEMREAD(addr, actual_data);
+ * if (actual_data == expected_data) {
+ * DQS_Valid_Window[i] = 1; RQDC.RQFD
+ * FDBK_Valid_Window[i][j] = 1; RFDC.RFFD
+ * }
+ * }
+ * }
+ */
+static u32 DQS_calibration_methodA(struct ddrautocal *cal)
+{
+ ulong rfdc_reg;
+ ulong rffd;
+
+ ulong rqdc_reg;
+ ulong rqfd;
+
+ u32 *membase;
+ ulong bxcf;
+ int rqfd_average;
+ int bxcr_num;
+ int rffd_average;
+ int pass;
+ u32 passed = 0;
+
+ int in_window;
+ struct autocal_regs curr_win_min;
+ struct autocal_regs curr_win_max;
+ struct autocal_regs best_win_min;
+ struct autocal_regs best_win_max;
+ struct autocal_regs loop_win_min;
+ struct autocal_regs loop_win_max;
+
+#ifdef DEBUG
+ ulong temp;
+#endif
+ ulong rdcc;
+
+ char slash[] = "\\|/-\\|/-";
+ int loopi = 0;
+
+ /* start */
+ in_window = 0;
+
+ memset(&curr_win_min, 0, sizeof(curr_win_min));
+ memset(&curr_win_max, 0, sizeof(curr_win_max));
+ memset(&best_win_min, 0, sizeof(best_win_min));
+ memset(&best_win_max, 0, sizeof(best_win_max));
+ memset(&loop_win_min, 0, sizeof(loop_win_min));
+ memset(&loop_win_max, 0, sizeof(loop_win_max));
+
+ rdcc = 0;
+
+ /*
+ * Program RDCC register
+ * Read sample cycle auto-update enable
+ */
+ mtsdram(SDRAM_RDCC, SDRAM_RDCC_RDSS_T1 | SDRAM_RDCC_RSAE_ENABLE);
+
+#ifdef DEBUG
+ mfsdram(SDRAM_RDCC, temp);
+ debug("<%s>SDRAM_RDCC=0x%x\n", __func__, temp);
+ mfsdram(SDRAM_RTSR, temp);
+ debug("<%s>SDRAM_RTSR=0x%x\n", __func__, temp);
+ mfsdram(SDRAM_FCSR, temp);
+ debug("<%s>SDRAM_FCSR=0x%x\n", __func__, temp);
+#endif
+
+ /*
+ * Program RQDC register
+ * Internal DQS delay mechanism enable
+ */
+ mtsdram(SDRAM_RQDC,
+ SDRAM_RQDC_RQDE_ENABLE | SDRAM_RQDC_RQFD_ENCODE(0x00));
+
+#ifdef DEBUG
+ mfsdram(SDRAM_RQDC, temp);
+ debug("<%s>SDRAM_RQDC=0x%x\n", __func__, temp);
+#endif
+
+ /*
+ * Program RFDC register
+ * Set Feedback Fractional Oversample
+ * Auto-detect read sample cycle enable
+ */
+ mtsdram(SDRAM_RFDC, SDRAM_RFDC_ARSE_ENABLE |
+ SDRAM_RFDC_RFOS_ENCODE(0) | SDRAM_RFDC_RFFD_ENCODE(0));
+
+#ifdef DEBUG
+ mfsdram(SDRAM_RFDC, temp);
+ debug("<%s>SDRAM_RFDC=0x%x\n", __func__, temp);
+#endif
+
+ putc(' ');
+ for (rqfd = 0; rqfd <= SDRAM_RQDC_RQFD_MAX; rqfd++) {
+
+ mfsdram(SDRAM_RQDC, rqdc_reg);
+ rqdc_reg &= ~(SDRAM_RQDC_RQFD_MASK);
+ mtsdram(SDRAM_RQDC, rqdc_reg | SDRAM_RQDC_RQFD_ENCODE(rqfd));
+
+ putc('\b');
+ putc(slash[loopi++ % 8]);
+
+ curr_win_min.rffd = 0;
+ curr_win_max.rffd = 0;
+ in_window = 0;
+
+ for (rffd = 0, pass = 0; rffd <= SDRAM_RFDC_RFFD_MAX; rffd++) {
+ mfsdram(SDRAM_RFDC, rfdc_reg);
+ rfdc_reg &= ~(SDRAM_RFDC_RFFD_MASK);
+ mtsdram(SDRAM_RFDC,
+ rfdc_reg | SDRAM_RFDC_RFFD_ENCODE(rffd));
+
+ for (bxcr_num = 0; bxcr_num < MAXBXCF; bxcr_num++) {
+ mfsdram(SDRAM_MB0CF + (bxcr_num<<2), bxcf);
+
+ /* Banks enabled */
+ if (bxcf & SDRAM_BXCF_M_BE_MASK) {
+ /* Bank is enabled */
+ membase = get_membase(bxcr_num);
+ pass = short_mem_test(membase);
+ } /* if bank enabled */
+ } /* for bxcr_num */
+
+ /* If this value passed update RFFD windows */
+ if (pass && !in_window) { /* at the start of window */
+ in_window = 1;
+ curr_win_min.rffd = curr_win_max.rffd = rffd;
+ curr_win_min.rqfd = curr_win_max.rqfd = rqfd;
+ mfsdram(SDRAM_RDCC, rdcc); /*record this value*/
+ } else if (!pass && in_window) { /* at end of window */
+ in_window = 0;
+ } else if (pass && in_window) { /* within the window */
+ curr_win_max.rffd = rffd;
+ curr_win_max.rqfd = rqfd;
+ }
+ /* else if (!pass && !in_window)
+ skip - no pass, not currently in a window */
+
+ if (in_window) {
+ if ((curr_win_max.rffd - curr_win_min.rffd) >
+ (best_win_max.rffd - best_win_min.rffd)) {
+ best_win_min.rffd = curr_win_min.rffd;
+ best_win_max.rffd = curr_win_max.rffd;
+
+ best_win_min.rqfd = curr_win_min.rqfd;
+ best_win_max.rqfd = curr_win_max.rqfd;
+ cal->rdcc = rdcc;
+ }
+ passed = 1;
+ }
+ } /* RFDC.RFFD */
+
+ /*
+ * save-off the best window results of the RFDC.RFFD
+ * for this RQDC.RQFD setting
+ */
+ /*
+ * if (just ended RFDC.RFDC loop pass window) >
+ * (prior RFDC.RFFD loop pass window)
+ */
+ if ((best_win_max.rffd - best_win_min.rffd) >
+ (loop_win_max.rffd - loop_win_min.rffd)) {
+ loop_win_min.rffd = best_win_min.rffd;
+ loop_win_max.rffd = best_win_max.rffd;
+ loop_win_min.rqfd = rqfd;
+ loop_win_max.rqfd = rqfd;
+ debug("RQFD.min 0x%08x, RQFD.max 0x%08x, "
+ "RFFD.min 0x%08x, RFFD.max 0x%08x\n",
+ loop_win_min.rqfd, loop_win_max.rqfd,
+ loop_win_min.rffd, loop_win_max.rffd);
+ }
+ } /* RQDC.RQFD */
+
+ putc('\b');
+
+ debug("\n");
+
+ if ((loop_win_min.rffd == 0) && (loop_win_max.rffd == 0) &&
+ (best_win_min.rffd == 0) && (best_win_max.rffd == 0) &&
+ (best_win_min.rqfd == 0) && (best_win_max.rqfd == 0)) {
+ passed = 0;
+ }
+
+ /*
+ * Need to program RQDC before RFDC.
+ */
+ debug("<%s> RQFD Min: 0x%x\n", __func__, loop_win_min.rqfd);
+ debug("<%s> RQFD Max: 0x%x\n", __func__, loop_win_max.rqfd);
+ rqfd_average = loop_win_max.rqfd;
+
+ if (rqfd_average < 0)
+ rqfd_average = 0;
+
+ if (rqfd_average > SDRAM_RQDC_RQFD_MAX)
+ rqfd_average = SDRAM_RQDC_RQFD_MAX;
+
+ debug("<%s> RFFD average: 0x%08x\n", __func__, rqfd_average);
+ mtsdram(SDRAM_RQDC, (rqdc_reg & ~SDRAM_RQDC_RQFD_MASK) |
+ SDRAM_RQDC_RQFD_ENCODE(rqfd_average));
+
+ debug("<%s> RFFD Min: 0x%08x\n", __func__, loop_win_min.rffd);
+ debug("<%s> RFFD Max: 0x%08x\n", __func__, loop_win_max.rffd);
+ rffd_average = ((loop_win_min.rffd + loop_win_max.rffd) / 2);
+
+ if (rffd_average < 0)
+ rffd_average = 0;
+
+ if (rffd_average > SDRAM_RFDC_RFFD_MAX)
+ rffd_average = SDRAM_RFDC_RFFD_MAX;
+
+ debug("<%s> RFFD average: 0x%08x\n", __func__, rffd_average);
+ mtsdram(SDRAM_RFDC, rfdc_reg | SDRAM_RFDC_RFFD_ENCODE(rffd_average));
+
+ /* if something passed, then return the size of the largest window */
+ if (passed != 0) {
+ passed = loop_win_max.rffd - loop_win_min.rffd;
+ cal->rqfd = rqfd_average;
+ cal->rffd = rffd_average;
+ cal->rffd_min = loop_win_min.rffd;
+ cal->rffd_max = loop_win_max.rffd;
+ }
+
+ return (u32)passed;
+}
+
+#else /* !defined(CONFIG_PPC4xx_DDR_METHOD_A) */
+
+/*-----------------------------------------------------------------------------+
+| program_DQS_calibration_methodB.
++-----------------------------------------------------------------------------*/
+static u32 program_DQS_calibration_methodB(struct ddrautocal *ddrcal)
+{
+ u32 pass_result = 0;
+
+#ifdef DEBUG
+ ulong temp;
+#endif
+
+ /*
+ * Program RDCC register
+ * Read sample cycle auto-update enable
+ */
+ mtsdram(SDRAM_RDCC, SDRAM_RDCC_RDSS_T2 | SDRAM_RDCC_RSAE_ENABLE);
+
+#ifdef DEBUG
+ mfsdram(SDRAM_RDCC, temp);
+ debug("<%s>SDRAM_RDCC=0x%08x\n", __func__, temp);
+#endif
+
+ /*
+ * Program RQDC register
+ * Internal DQS delay mechanism enable
+ */
+ mtsdram(SDRAM_RQDC,
+#if defined(CONFIG_DDR_RQDC_START_VAL)
+ SDRAM_RQDC_RQDE_ENABLE |
+ SDRAM_RQDC_RQFD_ENCODE(CONFIG_DDR_RQDC_START_VAL));
+#else
+ SDRAM_RQDC_RQDE_ENABLE | SDRAM_RQDC_RQFD_ENCODE(0x38));
+#endif
+
+#ifdef DEBUG
+ mfsdram(SDRAM_RQDC, temp);
+ debug("<%s>SDRAM_RQDC=0x%08x\n", __func__, temp);
+#endif
+
+ /*
+ * Program RFDC register
+ * Set Feedback Fractional Oversample
+ * Auto-detect read sample cycle enable
+ */
+ mtsdram(SDRAM_RFDC, SDRAM_RFDC_ARSE_ENABLE |
+ SDRAM_RFDC_RFOS_ENCODE(0) |
+ SDRAM_RFDC_RFFD_ENCODE(0));
+
+#ifdef DEBUG
+ mfsdram(SDRAM_RFDC, temp);
+ debug("<%s>SDRAM_RFDC=0x%08x\n", __func__, temp);
+#endif
+
+ pass_result = DQS_calibration_methodB(ddrcal);
+
+ return pass_result;
+}
+
+/*
+ * DQS_calibration_methodB()
+ *
+ * Autocalibration Method B
+ *
+ * ARRAY [Entire DQS Range] DQS_Valid_Window ; initialized to all zeros
+ * ARRAY [Entire Feedback Range] FDBK_Valid_Window; initialized to all zeros
+ * MEMWRITE(addr, expected_data);
+ * Initialialize the DQS delay to 80 degrees (MCIF0_RRQDC[RQFD]=0x38).
+ *
+ * for (j = 0; j < Entire Feedback Range; j++) {
+ * MEMREAD(addr, actual_data);
+ * if (actual_data == expected_data) {
+ * FDBK_Valid_Window[j] = 1;
+ * }
+ * }
+ *
+ * Set MCIF0_RFDC[RFFD] to the middle of the FDBK_Valid_Window.
+ *
+ * for (i = 0; i < Entire DQS Range; i++) {
+ * MEMREAD(addr, actual_data);
+ * if (actual_data == expected_data) {
+ * DQS_Valid_Window[i] = 1;
+ * }
+ * }
+ *
+ * Set MCIF0_RRQDC[RQFD] to the middle of the DQS_Valid_Window.
+ */
+/*-----------------------------------------------------------------------------+
+| DQS_calibration_methodB.
++-----------------------------------------------------------------------------*/
+static u32 DQS_calibration_methodB(struct ddrautocal *cal)
+{
+ ulong rfdc_reg;
+ ulong rffd;
+
+ ulong rqdc_reg;
+ ulong rqfd;
+
+ ulong rdcc;
+
+ u32 *membase;
+ ulong bxcf;
+ int rqfd_average;
+ int bxcr_num;
+ int rffd_average;
+ int pass;
+ uint passed = 0;
+
+ int in_window;
+ u32 curr_win_min, curr_win_max;
+ u32 best_win_min, best_win_max;
+ u32 size = 0;
+
+ /*------------------------------------------------------------------
+ | Test to determine the best read clock delay tuning bits.
+ |
+ | Before the DDR controller can be used, the read clock delay needs to
+ | be set. This is SDRAM_RQDC[RQFD] and SDRAM_RFDC[RFFD].
+ | This value cannot be hardcoded into the program because it changes
+ | depending on the board's setup and environment.
+ | To do this, all delay values are tested to see if they
+ | work or not. By doing this, you get groups of fails with groups of
+ | passing values. The idea is to find the start and end of a passing
+ | window and take the center of it to use as the read clock delay.
+ |
+ | A failure has to be seen first so that when we hit a pass, we know
+ | that it is truely the start of the window. If we get passing values
+ | to start off with, we don't know if we are at the start of the window
+ |
+ | The code assumes that a failure will always be found.
+ | If a failure is not found, there is no easy way to get the middle
+ | of the passing window. I guess we can pretty much pick any value
+ | but some values will be better than others. Since the lowest speed
+ | we can clock the DDR interface at is 200 MHz (2x 100 MHz PLB speed),
+ | from experimentation it is safe to say you will always have a failure
+ +-----------------------------------------------------------------*/
+
+ debug("\n\n");
+
+ in_window = 0;
+ rdcc = 0;
+
+ curr_win_min = curr_win_max = 0;
+ best_win_min = best_win_max = 0;
+ for (rffd = 0; rffd <= SDRAM_RFDC_RFFD_MAX; rffd++) {
+ mfsdram(SDRAM_RFDC, rfdc_reg);
+ rfdc_reg &= ~(SDRAM_RFDC_RFFD_MASK);
+ mtsdram(SDRAM_RFDC, rfdc_reg | SDRAM_RFDC_RFFD_ENCODE(rffd));
+
+ pass = 1;
+ for (bxcr_num = 0; bxcr_num < MAXBXCF; bxcr_num++) {
+ mfsdram(SDRAM_MB0CF + (bxcr_num<<2), bxcf);
+
+ /* Banks enabled */
+ if (bxcf & SDRAM_BXCF_M_BE_MASK) {
+ /* Bank is enabled */
+ membase = get_membase(bxcr_num);
+ pass &= short_mem_test(membase);
+ } /* if bank enabled */
+ } /* for bxcf_num */
+
+ /* If this value passed */
+ if (pass && !in_window) { /* start of passing window */
+ in_window = 1;
+ curr_win_min = curr_win_max = rffd;
+ mfsdram(SDRAM_RDCC, rdcc); /* record this value */
+ } else if (!pass && in_window) { /* end passing window */
+ in_window = 0;
+ } else if (pass && in_window) { /* within the passing window */
+ curr_win_max = rffd;
+ }
+
+ if (in_window) {
+ if ((curr_win_max - curr_win_min) >
+ (best_win_max - best_win_min)) {
+ best_win_min = curr_win_min;
+ best_win_max = curr_win_max;
+ cal->rdcc = rdcc;
+ }
+ passed = 1;
+ }
+ } /* for rffd */
+
+ if ((best_win_min == 0) && (best_win_max == 0))
+ passed = 0;
+ else
+ size = best_win_max - best_win_min;
+
+ debug("RFFD Min: 0x%x\n", best_win_min);
+ debug("RFFD Max: 0x%x\n", best_win_max);
+ rffd_average = ((best_win_min + best_win_max) / 2);
+
+ cal->rffd_min = best_win_min;
+ cal->rffd_max = best_win_max;
+
+ if (rffd_average < 0)
+ rffd_average = 0;
+
+ if (rffd_average > SDRAM_RFDC_RFFD_MAX)
+ rffd_average = SDRAM_RFDC_RFFD_MAX;
+
+ mtsdram(SDRAM_RFDC, rfdc_reg | SDRAM_RFDC_RFFD_ENCODE(rffd_average));
+
+ rffd = rffd_average;
+ in_window = 0;
+
+ curr_win_min = curr_win_max = 0;
+ best_win_min = best_win_max = 0;
+ for (rqfd = 0; rqfd <= SDRAM_RQDC_RQFD_MAX; rqfd++) {
+ mfsdram(SDRAM_RQDC, rqdc_reg);
+ rqdc_reg &= ~(SDRAM_RQDC_RQFD_MASK);
+ mtsdram(SDRAM_RQDC, rqdc_reg | SDRAM_RQDC_RQFD_ENCODE(rqfd));
+
+ pass = 1;
+ for (bxcr_num = 0; bxcr_num < MAXBXCF; bxcr_num++) {
+
+ mfsdram(SDRAM_MB0CF + (bxcr_num<<2), bxcf);
+
+ /* Banks enabled */
+ if (bxcf & SDRAM_BXCF_M_BE_MASK) {
+ /* Bank is enabled */
+ membase = get_membase(bxcr_num);
+ pass &= short_mem_test(membase);
+ } /* if bank enabled */
+ } /* for bxcf_num */
+
+ /* If this value passed */
+ if (pass && !in_window) {
+ in_window = 1;
+ curr_win_min = curr_win_max = rqfd;
+ } else if (!pass && in_window) {
+ in_window = 0;
+ } else if (pass && in_window) {
+ curr_win_max = rqfd;
+ }
+
+ if (in_window) {
+ if ((curr_win_max - curr_win_min) >
+ (best_win_max - best_win_min)) {
+ best_win_min = curr_win_min;
+ best_win_max = curr_win_max;
+ }
+ passed = 1;
+ }
+ } /* for rqfd */
+
+ if ((best_win_min == 0) && (best_win_max == 0))
+ passed = 0;
+
+ debug("RQFD Min: 0x%x\n", best_win_min);
+ debug("RQFD Max: 0x%x\n", best_win_max);
+ rqfd_average = ((best_win_min + best_win_max) / 2);
+
+ if (rqfd_average < 0)
+ rqfd_average = 0;
+
+ if (rqfd_average > SDRAM_RQDC_RQFD_MAX)
+ rqfd_average = SDRAM_RQDC_RQFD_MAX;
+
+ mtsdram(SDRAM_RQDC, (rqdc_reg & ~SDRAM_RQDC_RQFD_MASK) |
+ SDRAM_RQDC_RQFD_ENCODE(rqfd_average));
+
+ mfsdram(SDRAM_RQDC, rqdc_reg);
+ mfsdram(SDRAM_RFDC, rfdc_reg);
+
+ /*
+ * Need to program RQDC before RFDC. The value is read above.
+ * That is the reason why auto cal not work.
+ * See, comments below.
+ */
+ mtsdram(SDRAM_RQDC, rqdc_reg);
+ mtsdram(SDRAM_RFDC, rfdc_reg);
+
+ debug("RQDC: 0x%08X\n", rqdc_reg);
+ debug("RFDC: 0x%08X\n", rfdc_reg);
+
+ /* if something passed, then return the size of the largest window */
+ if (passed != 0) {
+ passed = size;
+ cal->rqfd = rqfd_average;
+ cal->rffd = rffd_average;
+ }
+
+ return (uint)passed;
+}
+#endif /* defined(CONFIG_PPC4xx_DDR_METHOD_A) */
+
+/*
+ * Default table for DDR auto-calibration of all
+ * possible WRDTR and CLKTR values.
+ * Table format is:
+ * {SDRAM_WRDTR.[WDTR], SDRAM_CLKTR.[CKTR]}
+ *
+ * Table is terminated with {-1, -1} value pair.
+ *
+ * Board vendors can specify their own board specific subset of
+ * known working {SDRAM_WRDTR.[WDTR], SDRAM_CLKTR.[CKTR]} value
+ * pairs via a board defined ddr_scan_option() function.
+ */
+struct sdram_timing full_scan_options[] = {
+ {0, 0}, {0, 1}, {0, 2}, {0, 3},
+ {1, 0}, {1, 1}, {1, 2}, {1, 3},
+ {2, 0}, {2, 1}, {2, 2}, {2, 3},
+ {3, 0}, {3, 1}, {3, 2}, {3, 3},
+ {4, 0}, {4, 1}, {4, 2}, {4, 3},
+ {5, 0}, {5, 1}, {5, 2}, {5, 3},
+ {6, 0}, {6, 1}, {6, 2}, {6, 3},
+ {-1, -1}
+};
+
+/*---------------------------------------------------------------------------+
+| DQS_calibration.
++----------------------------------------------------------------------------*/
+u32 DQS_autocalibration(void)
+{
+ u32 wdtr;
+ u32 clkp;
+ u32 result = 0;
+ u32 best_result = 0;
+ u32 best_rdcc;
+ struct ddrautocal ddrcal;
+ struct autocal_clks tcal;
+ ulong rfdc_reg;
+ ulong rqdc_reg;
+ u32 val;
+ int verbose_lvl = 0;
+ char *str;
+ char slash[] = "\\|/-\\|/-";
+ int loopi = 0;
+ struct sdram_timing *scan_list;
+
+#if defined(DEBUG_PPC4xx_DDR_AUTOCALIBRATION)
+ int i;
+ char tmp[64]; /* long enough for environment variables */
+#endif
+
+ memset(&tcal, 0, sizeof(tcal));
+
+ ddr_scan_option((ulong)full_scan_options);
+
+ scan_list =
+ (struct sdram_timing *)ddr_scan_option((ulong)full_scan_options);
+
+ mfsdram(SDRAM_MCOPT1, val);
+ if ((val & SDRAM_MCOPT1_MCHK_CHK_REP) == SDRAM_MCOPT1_MCHK_CHK_REP)
+ str = "ECC Auto calibration -";
+ else
+ str = "Auto calibration -";
+
+ puts(str);
+
+#if defined(DEBUG_PPC4xx_DDR_AUTOCALIBRATION)
+ i = getenv_r("autocalib", tmp, sizeof(tmp));
+ if (i < 0)
+ strcpy(tmp, CONFIG_AUTOCALIB);
+
+ if (strcmp(tmp, "final") == 0) {
+ /* display the final autocalibration results only */
+ verbose_lvl = 1;
+ } else if (strcmp(tmp, "loop") == 0) {
+ /* display summary autocalibration info per iteration */
+ verbose_lvl = 2;
+ } else if (strcmp(tmp, "display") == 0) {
+ /* display full debug autocalibration window info. */
+ verbose_lvl = 3;
+ }
+#endif /* (DEBUG_PPC4xx_DDR_AUTOCALIBRATION) */
+
+ best_rdcc = (SDRAM_RDCC_RDSS_T4 >> 30);
+
+ while ((scan_list->wrdtr != -1) && (scan_list->clktr != -1)) {
+ wdtr = scan_list->wrdtr;
+ clkp = scan_list->clktr;
+
+ mfsdram(SDRAM_WRDTR, val);
+ val &= ~(SDRAM_WRDTR_LLWP_MASK | SDRAM_WRDTR_WTR_MASK);
+ mtsdram(SDRAM_WRDTR, (val |
+ ddr_wrdtr(SDRAM_WRDTR_LLWP_1_CYC | (wdtr << 25))));
+
+ mtsdram(SDRAM_CLKTR, clkp << 30);
+
+ putc('\b');
+ putc(slash[loopi++ % 8]);
+
+#ifdef DEBUG
+ debug("\n");
+ debug("*** --------------\n");
+ mfsdram(SDRAM_WRDTR, val);
+ debug("*** SDRAM_WRDTR set to 0x%08x\n", val);
+ mfsdram(SDRAM_CLKTR, val);
+ debug("*** SDRAM_CLKTR set to 0x%08x\n", val);
+#endif
+
+ debug("\n");
+ if (verbose_lvl > 2) {
+ printf("*** SDRAM_WRDTR (wdtr) set to %d\n", wdtr);
+ printf("*** SDRAM_CLKTR (clkp) set to %d\n", clkp);
+ }
+
+ memset(&ddrcal, 0, sizeof(ddrcal));
+
+ /*
+ * DQS calibration.
+ */
+ /*
+ * program_DQS_calibration_method[A|B]() returns 0 if no
+ * passing RFDC.[RFFD] window is found or returns the size
+ * of the best passing window; in the case of a found passing
+ * window, the ddrcal will contain the values of the best
+ * window RQDC.[RQFD] and RFDC.[RFFD].
+ */
+
+ /*
+ * Call PPC4xx SDRAM DDR autocalibration methodA or methodB.
+ * Default is methodB.
+ * Defined the autocalibration method in the board specific
+ * header file.
+ * Please see include/configs/kilauea.h for an example for
+ * a board specific implementation.
+ */
+#if defined(CONFIG_PPC4xx_DDR_METHOD_A)
+ result = program_DQS_calibration_methodA(&ddrcal);
+#else
+ result = program_DQS_calibration_methodB(&ddrcal);
+#endif
+
+ sync();
+
+ /*
+ * Clear potential errors resulting from auto-calibration.
+ * If not done, then we could get an interrupt later on when
+ * exceptions are enabled.
+ */
+ set_mcsr(get_mcsr());
+
+ val = ddrcal.rdcc; /* RDCC from the best passing window */
+
+ udelay(100);
+
+ if (verbose_lvl > 1) {
+ char *tstr;
+ switch ((val >> 30)) {
+ case 0:
+ if (result != 0)
+ tstr = "T1";
+ else
+ tstr = "N/A";
+ break;
+ case 1:
+ tstr = "T2";
+ break;
+ case 2:
+ tstr = "T3";
+ break;
+ case 3:
+ tstr = "T4";
+ break;
+ default:
+ tstr = "unknown";
+ break;
+ }
+ printf("** WRDTR(%d) CLKTR(%d), Wind (%d), best (%d), "
+ "max-min(0x%04x)(0x%04x), RDCC: %s\n",
+ wdtr, clkp, result, best_result,
+ ddrcal.rffd_min, ddrcal.rffd_max, tstr);
+ }
+
+ /*
+ * The DQS calibration "result" is either "0"
+ * if no passing window was found, or is the
+ * size of the RFFD passing window.
+ */
+ if (result != 0) {
+ tcal.autocal.flags = 1;
+ debug("*** (%d)(%d) result passed window size: 0x%08x, "
+ "rqfd = 0x%08x, rffd = 0x%08x, rdcc = 0x%08x\n",
+ wdtr, clkp, result, ddrcal.rqfd,
+ ddrcal.rffd, ddrcal.rdcc);
+ /*
+ * Save the SDRAM_WRDTR and SDRAM_CLKTR
+ * settings for the largest returned
+ * RFFD passing window size.
+ */
+ if (result > best_result) {
+ /*
+ * want the lowest Read Sample Cycle Select
+ */
+ val = (val & SDRAM_RDCC_RDSS_MASK) >> 30;
+ debug("*** (%d) (%d) current_rdcc, best_rdcc\n",
+ val, best_rdcc);
+ if (val <= best_rdcc) {
+ best_rdcc = val;
+ tcal.clocks.wrdtr = wdtr;
+ tcal.clocks.clktr = clkp;
+ tcal.clocks.rdcc = (val << 30);
+ tcal.autocal.rqfd = ddrcal.rqfd;
+ tcal.autocal.rffd = ddrcal.rffd;
+ best_result = result;
+
+ if (verbose_lvl > 2) {
+ printf("** (%d)(%d) "
+ "best result: 0x%04x\n",
+ wdtr, clkp,
+ best_result);
+ printf("** (%d)(%d) "
+ "best WRDTR: 0x%04x\n",
+ wdtr, clkp,
+ tcal.clocks.wrdtr);
+ printf("** (%d)(%d) "
+ "best CLKTR: 0x%04x\n",
+ wdtr, clkp,
+ tcal.clocks.clktr);
+ printf("** (%d)(%d) "
+ "best RQDC: 0x%04x\n",
+ wdtr, clkp,
+ tcal.autocal.rqfd);
+ printf("** (%d)(%d) "
+ "best RFDC: 0x%04x\n",
+ wdtr, clkp,
+ tcal.autocal.rffd);
+ printf("** (%d)(%d) "
+ "best RDCC: 0x%08x\n",
+ wdtr, clkp,
+ (u32)tcal.clocks.rdcc);
+ mfsdram(SDRAM_RTSR, val);
+ printf("** (%d)(%d) best "
+ "loop RTSR: 0x%08x\n",
+ wdtr, clkp, val);
+ mfsdram(SDRAM_FCSR, val);
+ printf("** (%d)(%d) best "
+ "loop FCSR: 0x%08x\n",
+ wdtr, clkp, val);
+ }
+ } /* if (val <= best_rdcc) */
+ } /* if (result >= best_result) */
+ } /* if (result != 0) */
+ scan_list++;
+ } /* while ((scan_list->wrdtr != -1) && (scan_list->clktr != -1)) */
+
+ if (tcal.autocal.flags == 1) {
+ if (verbose_lvl > 0) {
+ printf("*** --------------\n");
+ printf("*** best_result window size: %d\n",
+ best_result);
+ printf("*** best_result WRDTR: 0x%04x\n",
+ tcal.clocks.wrdtr);
+ printf("*** best_result CLKTR: 0x%04x\n",
+ tcal.clocks.clktr);
+ printf("*** best_result RQFD: 0x%04x\n",
+ tcal.autocal.rqfd);
+ printf("*** best_result RFFD: 0x%04x\n",
+ tcal.autocal.rffd);
+ printf("*** best_result RDCC: 0x%04x\n",
+ tcal.clocks.rdcc);
+ printf("*** --------------\n");
+ printf("\n");
+ }
+
+ /*
+ * if got best passing result window, then lock in the
+ * best CLKTR, WRDTR, RQFD, and RFFD values
+ */
+ mfsdram(SDRAM_WRDTR, val);
+ mtsdram(SDRAM_WRDTR, (val &
+ ~(SDRAM_WRDTR_LLWP_MASK | SDRAM_WRDTR_WTR_MASK)) |
+ ddr_wrdtr(SDRAM_WRDTR_LLWP_1_CYC |
+ (tcal.clocks.wrdtr << 25)));
+
+ mtsdram(SDRAM_CLKTR, tcal.clocks.clktr << 30);
+
+ mfsdram(SDRAM_RQDC, rqdc_reg);
+ rqdc_reg &= ~(SDRAM_RQDC_RQFD_MASK);
+ mtsdram(SDRAM_RQDC, rqdc_reg |
+ SDRAM_RQDC_RQFD_ENCODE(tcal.autocal.rqfd));
+
+ mfsdram(SDRAM_RQDC, rqdc_reg);
+ debug("*** best_result: read value SDRAM_RQDC 0x%08x\n",
+ rqdc_reg);
+
+ mfsdram(SDRAM_RFDC, rfdc_reg);
+ rfdc_reg &= ~(SDRAM_RFDC_RFFD_MASK);
+ mtsdram(SDRAM_RFDC, rfdc_reg |
+ SDRAM_RFDC_RFFD_ENCODE(tcal.autocal.rffd));
+
+ mfsdram(SDRAM_RFDC, rfdc_reg);
+ debug("*** best_result: read value SDRAM_RFDC 0x%08x\n",
+ rfdc_reg);
+ mfsdram(SDRAM_RDCC, val);
+ debug("*** SDRAM_RDCC 0x%08x\n", val);
+ } else {
+ /*
+ * no valid windows were found
+ */
+ printf("DQS memory calibration window can not be determined, "
+ "terminating u-boot.\n");
+ ppc4xx_ibm_ddr2_register_dump();
+ spd_ddr_init_hang();
+ }
+
+ blank_string(strlen(str));
+
+ return 0;
+}
+#else /* defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL) */
+u32 DQS_autocalibration(void)
+{
+ return 0;
+}
+#endif /* !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) */
+#endif /* defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION) */
diff --git a/cpu/ppc4xx/Makefile b/cpu/ppc4xx/Makefile
index c773400..463b575 100644
--- a/cpu/ppc4xx/Makefile
+++ b/cpu/ppc4xx/Makefile
@@ -35,6 +35,9 @@ SOBJS += kgdb.o
COBJS := 40x_spd_sdram.o
COBJS += 44x_spd_ddr.o
COBJS += 44x_spd_ddr2.o
+ifdef CONFIG_PPC4xx_DDR_AUTOCALIBRATION
+COBJS += 4xx_ibm_ddr2_autocalib.o
+endif
COBJS += 4xx_pci.o
COBJS += 4xx_pcie.o
COBJS += bedbug_405.o
diff --git a/cpu/ppc4xx/miiphy.c b/cpu/ppc4xx/miiphy.c
index c882720..84b1bbe 100644
--- a/cpu/ppc4xx/miiphy.c
+++ b/cpu/ppc4xx/miiphy.c
@@ -180,8 +180,10 @@ int phy_setup_aneg (char *devname, unsigned char addr)
*
* sr: Currently on 460EX only EMAC0 works with MDIO, so we always
* return EMAC0 offset here
+ * vg: For 460EX/460GT if internal GPCS PHY address is specified
+ * return appropriate EMAC offset
*/
-unsigned int miiphy_getemac_offset (void)
+unsigned int miiphy_getemac_offset(u8 addr)
{
#if (defined(CONFIG_440) && \
!defined(CONFIG_440SP) && !defined(CONFIG_440SPE) && \
@@ -233,6 +235,35 @@ unsigned int miiphy_getemac_offset (void)
return 0x100;
#endif
+#if defined(CONFIG_460EX) || defined(CONFIG_460GT)
+ u32 eoffset = 0;
+
+ switch (addr) {
+#if defined(CONFIG_HAS_ETH1) && defined(CONFIG_GPCS_PHY1_ADDR)
+ case CONFIG_GPCS_PHY1_ADDR:
+ if (addr == EMAC_M1_IPPA_GET(in_be32((void *)EMAC_M1 + 0x100)))
+ eoffset = 0x100;
+ break;
+#endif
+#if defined(CONFIG_HAS_ETH2) && defined(CONFIG_GPCS_PHY2_ADDR)
+ case CONFIG_GPCS_PHY2_ADDR:
+ if (addr == EMAC_M1_IPPA_GET(in_be32((void *)EMAC_M1 + 0x300)))
+ eoffset = 0x300;
+ break;
+#endif
+#if defined(CONFIG_HAS_ETH3) && defined(CONFIG_GPCS_PHY3_ADDR)
+ case CONFIG_GPCS_PHY3_ADDR:
+ if (addr == EMAC_M1_IPPA_GET(in_be32((void *)EMAC_M1 + 0x400)))
+ eoffset = 0x400;
+ break;
+#endif
+ default:
+ eoffset = 0;
+ break;
+ }
+ return eoffset;
+#endif
+
return 0;
#endif
}
@@ -262,7 +293,7 @@ static int emac_miiphy_command(u8 addr, u8 reg, int cmd, u16 value)
u32 emac_reg;
u32 sta_reg;
- emac_reg = miiphy_getemac_offset();
+ emac_reg = miiphy_getemac_offset(addr);
/* wait for completion */
if (emac_miiphy_wait(emac_reg) != 0)
@@ -311,7 +342,7 @@ int emac4xx_miiphy_read (char *devname, unsigned char addr, unsigned char reg,
unsigned long sta_reg;
unsigned long emac_reg;
- emac_reg = miiphy_getemac_offset ();
+ emac_reg = miiphy_getemac_offset(addr);
if (emac_miiphy_command(addr, reg, EMAC_STACR_READ, 0) != 0)
return -1;
generated by cgit v1.1 at 2024-12-27 09:33:41 +0000