ARM: uniphier: allow to enable multiple SoCs
Before this commit, the Kconfig menu in mach-uniphier only allowed us
to choose one SoC to be compiled. Each SoC has its own defconfig file
for the build-test coverage. Consequently, some defconfig files are
duplicated with only the difference in CONFIG_DEFAULT_DEVICE_TREE and
CONFIG_{SOC_NAME}=y.
Now, most of board-specific parameters have been moved to device trees,
so it makes sense to include init code of multiple SoCs into a single
image as long as the SoCs have similar architecture. In fact, some
SoCs of UniPhier family are very similar:
- PH1-LD4 and PH1-sLD8
- PH1-LD6b and ProXstream2 (will be added in the upcoming commit)
This commit will be helpful to merge some defconfig files for better
maintainability.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/ddrphy/Makefile b/arch/arm/mach-uniphier/ddrphy/Makefile
new file mode 100644
index 0000000..e2d109d
--- /dev/null
+++ b/arch/arm/mach-uniphier/ddrphy/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_ARCH_UNIPHIER_PH1_LD4) += ddrphy-training.o ddrphy-ph1-ld4.o
+obj-$(CONFIG_ARCH_UNIPHIER_PH1_PRO4) += ddrphy-training.o ddrphy-ph1-pro4.o
+obj-$(CONFIG_ARCH_UNIPHIER_PH1_SLD8) += ddrphy-training.o ddrphy-ph1-sld8.o
diff --git a/arch/arm/mach-uniphier/ddrphy/ddrphy-ph1-ld4.c b/arch/arm/mach-uniphier/ddrphy/ddrphy-ph1-ld4.c
new file mode 100644
index 0000000..991d929
--- /dev/null
+++ b/arch/arm/mach-uniphier/ddrphy/ddrphy-ph1-ld4.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <linux/types.h>
+#include <linux/io.h>
+#include <mach/ddrphy-regs.h>
+
+int ph1_ld4_ddrphy_init(struct ddrphy __iomem *phy, int freq, int size)
+{
+ u32 tmp;
+
+ writel(0x0300c473, &phy->pgcr[1]);
+ if (freq == 1333) {
+ writel(0x0a806844, &phy->ptr[0]);
+ writel(0x208e0124, &phy->ptr[1]);
+ } else {
+ writel(0x0c807d04, &phy->ptr[0]);
+ writel(0x2710015E, &phy->ptr[1]);
+ }
+ writel(0x00083DEF, &phy->ptr[2]);
+ if (freq == 1333) {
+ writel(0x0f051616, &phy->ptr[3]);
+ writel(0x06ae08d6, &phy->ptr[4]);
+ } else {
+ writel(0x12061A80, &phy->ptr[3]);
+ writel(0x08027100, &phy->ptr[4]);
+ }
+ writel(0xF004001A, &phy->dsgcr);
+
+ /* change the value of the on-die pull-up/pull-down registors */
+ tmp = readl(&phy->dxccr);
+ tmp &= ~0x0ee0;
+ tmp |= DXCCR_DQSNRES_688_OHM | DXCCR_DQSRES_688_OHM;
+ writel(tmp, &phy->dxccr);
+
+ writel(0x0000040B, &phy->dcr);
+ if (freq == 1333) {
+ writel(0x85589955, &phy->dtpr[0]);
+ if (size == 1)
+ writel(0x1a8253c0, &phy->dtpr[1]);
+ else
+ writel(0x1a8363c0, &phy->dtpr[1]);
+ writel(0x5002c200, &phy->dtpr[2]);
+ writel(0x00000b51, &phy->mr0);
+ } else {
+ writel(0x999cbb66, &phy->dtpr[0]);
+ if (size == 1)
+ writel(0x1a82dbc0, &phy->dtpr[1]);
+ else
+ writel(0x1a878400, &phy->dtpr[1]);
+ writel(0xa00214f8, &phy->dtpr[2]);
+ writel(0x00000d71, &phy->mr0);
+ }
+ writel(0x00000006, &phy->mr1);
+ if (freq == 1333)
+ writel(0x00000290, &phy->mr2);
+ else
+ writel(0x00000298, &phy->mr2);
+
+ writel(0x00000800, &phy->mr3);
+
+ while (!(readl(&phy->pgsr[0]) & PGSR0_IDONE))
+ ;
+
+ writel(0x0300C473, &phy->pgcr[1]);
+ writel(0x0000005D, &phy->zq[0].cr[1]);
+
+ return 0;
+}
diff --git a/arch/arm/mach-uniphier/ddrphy/ddrphy-ph1-pro4.c b/arch/arm/mach-uniphier/ddrphy/ddrphy-ph1-pro4.c
new file mode 100644
index 0000000..bc47ba3
--- /dev/null
+++ b/arch/arm/mach-uniphier/ddrphy/ddrphy-ph1-pro4.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <linux/types.h>
+#include <linux/io.h>
+#include <mach/ddrphy-regs.h>
+
+int ph1_pro4_ddrphy_init(struct ddrphy __iomem *phy, int freq, int size)
+{
+ u32 tmp;
+
+ writel(0x0300c473, &phy->pgcr[1]);
+ if (freq == 1333) {
+ writel(0x0a806844, &phy->ptr[0]);
+ writel(0x208e0124, &phy->ptr[1]);
+ } else {
+ writel(0x0c807d04, &phy->ptr[0]);
+ writel(0x2710015E, &phy->ptr[1]);
+ }
+ writel(0x00083DEF, &phy->ptr[2]);
+ if (freq == 1333) {
+ writel(0x0f051616, &phy->ptr[3]);
+ writel(0x06ae08d6, &phy->ptr[4]);
+ } else {
+ writel(0x12061A80, &phy->ptr[3]);
+ writel(0x08027100, &phy->ptr[4]);
+ }
+ writel(0xF004001A, &phy->dsgcr);
+
+ /* change the value of the on-die pull-up/pull-down registors */
+ tmp = readl(&phy->dxccr);
+ tmp &= ~0x0ee0;
+ tmp |= DXCCR_DQSNRES_688_OHM | DXCCR_DQSRES_688_OHM;
+ writel(tmp, &phy->dxccr);
+
+ writel(0x0000040B, &phy->dcr);
+ if (freq == 1333) {
+ writel(0x85589955, &phy->dtpr[0]);
+ if (size == 1)
+ writel(0x1a8363c0, &phy->dtpr[1]);
+ else
+ writel(0x1a8363c0, &phy->dtpr[1]);
+ writel(0x5002c200, &phy->dtpr[2]);
+ writel(0x00000b51, &phy->mr0);
+ } else {
+ writel(0x999cbb66, &phy->dtpr[0]);
+ if (size == 1)
+ writel(0x1a878400, &phy->dtpr[1]);
+ else
+ writel(0x1a878400, &phy->dtpr[1]);
+ writel(0xa00214f8, &phy->dtpr[2]);
+ writel(0x00000d71, &phy->mr0);
+ }
+ writel(0x00000006, &phy->mr1);
+ if (freq == 1333)
+ writel(0x00000290, &phy->mr2);
+ else
+ writel(0x00000298, &phy->mr2);
+
+ writel(0x00000000, &phy->mr3);
+
+ while (!(readl(&phy->pgsr[0]) & PGSR0_IDONE))
+ ;
+
+ writel(0x0300C473, &phy->pgcr[1]);
+ writel(0x0000005D, &phy->zq[0].cr[1]);
+
+ return 0;
+}
diff --git a/arch/arm/mach-uniphier/ddrphy/ddrphy-ph1-sld8.c b/arch/arm/mach-uniphier/ddrphy/ddrphy-ph1-sld8.c
new file mode 100644
index 0000000..39024a0
--- /dev/null
+++ b/arch/arm/mach-uniphier/ddrphy/ddrphy-ph1-sld8.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2014-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <config.h>
+#include <linux/types.h>
+#include <linux/io.h>
+#include <mach/ddrphy-regs.h>
+
+int ph1_sld8_ddrphy_init(struct ddrphy __iomem *phy, int freq, int size)
+{
+ u32 tmp;
+
+ writel(0x0300c473, &phy->pgcr[1]);
+ if (freq == 1333) {
+ writel(0x0a806844, &phy->ptr[0]);
+ writel(0x208e0124, &phy->ptr[1]);
+ } else {
+ writel(0x0c807d04, &phy->ptr[0]);
+ writel(0x2710015E, &phy->ptr[1]);
+ }
+ writel(0x00083DEF, &phy->ptr[2]);
+ if (freq == 1333) {
+ writel(0x0f051616, &phy->ptr[3]);
+ writel(0x06ae08d6, &phy->ptr[4]);
+ } else {
+ writel(0x12061A80, &phy->ptr[3]);
+ writel(0x08027100, &phy->ptr[4]);
+ }
+ writel(0xF004001A, &phy->dsgcr);
+
+ /* change the value of the on-die pull-up/pull-down registors */
+ tmp = readl(&phy->dxccr);
+ tmp &= ~0x0ee0;
+ tmp |= DXCCR_DQSNRES_688_OHM | DXCCR_DQSRES_688_OHM;
+ writel(tmp, &phy->dxccr);
+
+ writel(0x0000040B, &phy->dcr);
+ if (freq == 1333) {
+ writel(0x85589955, &phy->dtpr[0]);
+ if (size == 1)
+ writel(0x1a8363c0, &phy->dtpr[1]);
+ else
+ writel(0x1a8363c0, &phy->dtpr[1]);
+ writel(0x5002c200, &phy->dtpr[2]);
+ writel(0x00000b51, &phy->mr0);
+ } else {
+ writel(0x999cbb66, &phy->dtpr[0]);
+ if (size == 1)
+ writel(0x1a878400, &phy->dtpr[1]);
+ else
+ writel(0x1a878400, &phy->dtpr[1]);
+ writel(0xa00214f8, &phy->dtpr[2]);
+ writel(0x00000d71, &phy->mr0);
+ }
+ writel(0x00000006, &phy->mr1);
+ if (freq == 1333)
+ writel(0x00000290, &phy->mr2);
+ else
+ writel(0x00000298, &phy->mr2);
+
+#ifdef CONFIG_DDR_STANDARD
+ writel(0x00000000, &phy->mr3);
+#else
+ writel(0x00000800, &phy->mr3);
+#endif
+
+ while (!(readl(&phy->pgsr[0]) & PGSR0_IDONE))
+ ;
+
+ writel(0x0300C473, &phy->pgcr[1]);
+ writel(0x0000005D, &phy->zq[0].cr[1]);
+
+ return 0;
+}
diff --git a/arch/arm/mach-uniphier/ddrphy/ddrphy-training.c b/arch/arm/mach-uniphier/ddrphy/ddrphy-training.c
new file mode 100644
index 0000000..a98b814
--- /dev/null
+++ b/arch/arm/mach-uniphier/ddrphy/ddrphy-training.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <linux/io.h>
+#include <mach/ddrphy-regs.h>
+
+void ddrphy_prepare_training(struct ddrphy __iomem *phy, int rank)
+{
+ int dx;
+ u32 __iomem tmp, *p;
+
+ for (dx = 0; dx < NR_DATX8_PER_DDRPHY; dx++) {
+ p = &phy->dx[dx].gcr;
+
+ tmp = readl(p);
+ /* Specify the rank that should be write leveled */
+ tmp &= ~DXGCR_WLRKEN_MASK;
+ tmp |= (1 << (DXGCR_WLRKEN_SHIFT + rank)) & DXGCR_WLRKEN_MASK;
+ writel(tmp, p);
+ }
+
+ p = &phy->dtcr;
+
+ tmp = readl(p);
+ /* Specify the rank used during data bit deskew and eye centering */
+ tmp &= ~DTCR_DTRANK_MASK;
+ tmp |= (rank << DTCR_DTRANK_SHIFT) & DTCR_DTRANK_MASK;
+ /* Use Multi-Purpose Register for DQS gate training */
+ tmp |= DTCR_DTMPR;
+ /* Specify the rank enabled for data-training */
+ tmp &= ~DTCR_RNKEN_MASK;
+ tmp |= (1 << (DTCR_RNKEN_SHIFT + rank)) & DTCR_RNKEN_MASK;
+ writel(tmp, p);
+}
+
+struct ddrphy_init_sequence {
+ char *description;
+ u32 init_flag;
+ u32 done_flag;
+ u32 err_flag;
+};
+
+static struct ddrphy_init_sequence init_sequence[] = {
+ {
+ "DRAM Initialization",
+ PIR_DRAMRST | PIR_DRAMINIT,
+ PGSR0_DIDONE,
+ PGSR0_DIERR
+ },
+ {
+ "Write Leveling",
+ PIR_WL,
+ PGSR0_WLDONE,
+ PGSR0_WLERR
+ },
+ {
+ "Read DQS Gate Training",
+ PIR_QSGATE,
+ PGSR0_QSGDONE,
+ PGSR0_QSGERR
+ },
+ {
+ "Write Leveling Adjustment",
+ PIR_WLADJ,
+ PGSR0_WLADONE,
+ PGSR0_WLAERR
+ },
+ {
+ "Read Bit Deskew",
+ PIR_RDDSKW,
+ PGSR0_RDDONE,
+ PGSR0_RDERR
+ },
+ {
+ "Write Bit Deskew",
+ PIR_WRDSKW,
+ PGSR0_WDDONE,
+ PGSR0_WDERR
+ },
+ {
+ "Read Eye Training",
+ PIR_RDEYE,
+ PGSR0_REDONE,
+ PGSR0_REERR
+ },
+ {
+ "Write Eye Training",
+ PIR_WREYE,
+ PGSR0_WEDONE,
+ PGSR0_WEERR
+ }
+};
+
+int ddrphy_training(struct ddrphy __iomem *phy)
+{
+ int i;
+ u32 pgsr0;
+ u32 init_flag = PIR_INIT;
+ u32 done_flag = PGSR0_IDONE;
+ int timeout = 50000; /* 50 msec is long enough */
+#ifdef DISPLAY_ELAPSED_TIME
+ ulong start = get_timer(0);
+#endif
+
+ for (i = 0; i < ARRAY_SIZE(init_sequence); i++) {
+ init_flag |= init_sequence[i].init_flag;
+ done_flag |= init_sequence[i].done_flag;
+ }
+
+ writel(init_flag, &phy->pir);
+
+ do {
+ if (--timeout < 0) {
+ printf("%s: error: timeout during DDR training\n",
+ __func__);
+ return -1;
+ }
+ udelay(1);
+ pgsr0 = readl(&phy->pgsr[0]);
+ } while ((pgsr0 & done_flag) != done_flag);
+
+ for (i = 0; i < ARRAY_SIZE(init_sequence); i++) {
+ if (pgsr0 & init_sequence[i].err_flag) {
+ printf("%s: error: %s failed\n", __func__,
+ init_sequence[i].description);
+ return -1;
+ }
+ }
+
+#ifdef DISPLAY_ELAPSED_TIME
+ printf("%s: info: elapsed time %ld msec\n", get_timer(start));
+#endif
+
+ return 0;
+}