[U-Boot] [PATCH v3 4/7] MSCC: add support for Luton SoCs
Gregory CLEMENT
gregory.clement at bootlin.com
Wed Dec 5 17:10:51 UTC 2018
As the Ocelots SoCs, this family of SoCs are found in the Microsemi
Switches solution.
Signed-off-by: Gregory CLEMENT <gregory.clement at bootlin.com>
---
arch/mips/mach-mscc/Kconfig | 13 +
arch/mips/mach-mscc/Makefile | 1 +
arch/mips/mach-mscc/cpu.c | 14 +-
arch/mips/mach-mscc/dram.c | 2 +
arch/mips/mach-mscc/include/mach/common.h | 4 +
arch/mips/mach-mscc/include/mach/ddr.h | 112 +++++++-
.../mips/mach-mscc/include/mach/luton/luton.h | 24 ++
.../include/mach/luton/luton_devcpu_gcb.h | 14 +
.../include/mach/luton/luton_icpu_cfg.h | 245 ++++++++++++++++++
arch/mips/mach-mscc/lowlevel_init.S | 7 +
arch/mips/mach-mscc/lowlevel_init_luton.S | 62 +++++
11 files changed, 494 insertions(+), 4 deletions(-)
create mode 100644 arch/mips/mach-mscc/include/mach/luton/luton.h
create mode 100644 arch/mips/mach-mscc/include/mach/luton/luton_devcpu_gcb.h
create mode 100644 arch/mips/mach-mscc/include/mach/luton/luton_icpu_cfg.h
create mode 100644 arch/mips/mach-mscc/lowlevel_init_luton.S
diff --git a/arch/mips/mach-mscc/Kconfig b/arch/mips/mach-mscc/Kconfig
index 7f1b270207..a8cace0e79 100644
--- a/arch/mips/mach-mscc/Kconfig
+++ b/arch/mips/mach-mscc/Kconfig
@@ -21,6 +21,12 @@ config SOC_OCELOT
help
This supports MSCC Ocelot family of SOCs.
+config SOC_LUTON
+ bool
+ select SOC_VCOREIII
+ help
+ This supports MSCC Luton family of SOCs.
+
config SYS_CONFIG_NAME
default "vcoreiii"
@@ -41,6 +47,13 @@ config TARGET_OCELOT_PCB123
When selected, CONFIG_DEFAULT_DEVICE_TREE should be set to
ocelot_pcb123
+config TARGET_LUTON_PCB091
+ bool "MSCC PCB091 Reference Board"
+ select SOC_LUTON
+ select MSCC_BITBANG_SPI_GPIO
+ help
+ When selected, CONFIG_DEFAULT_DEVICE_TREE should be set to
+ luton_pcb091
endchoice
choice
diff --git a/arch/mips/mach-mscc/Makefile b/arch/mips/mach-mscc/Makefile
index d14ec33838..6c60f26ca4 100644
--- a/arch/mips/mach-mscc/Makefile
+++ b/arch/mips/mach-mscc/Makefile
@@ -3,3 +3,4 @@
CFLAGS_cpu.o += -finline-limit=64000
obj-y += cpu.o dram.o reset.o lowlevel_init.o
+obj-$(CONFIG_SOC_LUTON) += lowlevel_init_luton.o
diff --git a/arch/mips/mach-mscc/cpu.c b/arch/mips/mach-mscc/cpu.c
index b503e1407b..5be8ff69d5 100644
--- a/arch/mips/mach-mscc/cpu.c
+++ b/arch/mips/mach-mscc/cpu.c
@@ -48,6 +48,10 @@ void vcoreiii_tlb_init(void)
*/
create_tlb(tlbix++, MSCC_IO_ORIGIN1_OFFSET, SZ_16M, MMU_REGIO_RW,
MMU_REGIO_RW);
+#ifdef CONFIG_SOC_LUTON
+ create_tlb(tlbix++, MSCC_IO_ORIGIN2_OFFSET, SZ_16M, MMU_REGIO_RW,
+ MMU_REGIO_RW);
+#endif
#if CONFIG_SYS_TEXT_BASE == MSCC_FLASH_TO
/*
@@ -75,6 +79,14 @@ void vcoreiii_tlb_init(void)
int mach_cpu_init(void)
{
/* Speed up NOR flash access */
+#ifdef CONFIG_SOC_LUTON
+ writel(ICPU_PI_MST_CFG_TRISTATE_CTRL +
+ ICPU_PI_MST_CFG_CLK_DIV(4), BASE_CFG + ICPU_PI_MST_CFG);
+
+ writel(ICPU_SPI_MST_CFG_FAST_READ_ENA +
+ ICPU_SPI_MST_CFG_CS_DESELECT_TIME(0x19) +
+ ICPU_SPI_MST_CFG_CLK_DIV(9), BASE_CFG + ICPU_SPI_MST_CFG);
+#else
writel(ICPU_SPI_MST_CFG_CS_DESELECT_TIME(0x19) +
ICPU_SPI_MST_CFG_CLK_DIV(9), BASE_CFG + ICPU_SPI_MST_CFG);
/*
@@ -85,6 +97,6 @@ int mach_cpu_init(void)
writel(0, BASE_CFG + ICPU_DST_INTR_MAP(1));
writel(0, BASE_CFG + ICPU_DST_INTR_MAP(2));
writel(0, BASE_CFG + ICPU_DST_INTR_MAP(3));
-
+#endif
return 0;
}
diff --git a/arch/mips/mach-mscc/dram.c b/arch/mips/mach-mscc/dram.c
index 5acee6f918..309007c14e 100644
--- a/arch/mips/mach-mscc/dram.c
+++ b/arch/mips/mach-mscc/dram.c
@@ -19,9 +19,11 @@ static inline int vcoreiii_train_bytelane(void)
ret = hal_vcoreiii_train_bytelane(0);
+#ifdef CONFIG_SOC_OCELOT
if (ret)
return ret;
ret = hal_vcoreiii_train_bytelane(1);
+#endif
return ret;
}
diff --git a/arch/mips/mach-mscc/include/mach/common.h b/arch/mips/mach-mscc/include/mach/common.h
index 842462aeed..931ecd7985 100644
--- a/arch/mips/mach-mscc/include/mach/common.h
+++ b/arch/mips/mach-mscc/include/mach/common.h
@@ -10,6 +10,10 @@
#include <mach/ocelot/ocelot.h>
#include <mach/ocelot/ocelot_devcpu_gcb.h>
#include <mach/ocelot/ocelot_icpu_cfg.h>
+#elif defined(CONFIG_SOC_LUTON)
+#include <mach/luton/luton.h>
+#include <mach/luton/luton_devcpu_gcb.h>
+#include <mach/luton/luton_icpu_cfg.h>
#else
#error Unsupported platform
#endif
diff --git a/arch/mips/mach-mscc/include/mach/ddr.h b/arch/mips/mach-mscc/include/mach/ddr.h
index 4bdea90506..97eff2a196 100644
--- a/arch/mips/mach-mscc/include/mach/ddr.h
+++ b/arch/mips/mach-mscc/include/mach/ddr.h
@@ -598,6 +598,98 @@ static inline int dram_check(void)
}
return 0;
}
+#else /* Luton */
+
+static inline void sleep_100ns(u32 val)
+{
+}
+
+static inline void hal_vcoreiii_ddr_reset_assert(void)
+{
+ setbits_le32(BASE_CFG + ICPU_MEMPHY_CFG, ICPU_MEMPHY_CFG_PHY_RST);
+ setbits_le32(BASE_CFG + ICPU_RESET, ICPU_RESET_MEM_RST_FORCE);
+}
+
+static inline void hal_vcoreiii_ddr_reset_release(void)
+{
+}
+
+static inline void hal_vcoreiii_ddr_failed(void)
+{
+ register u32 memphy_cfg = readl(BASE_CFG + ICPU_MEMPHY_CFG);
+
+ /* Do a fifo reset and start over */
+ writel(memphy_cfg | ICPU_MEMPHY_CFG_PHY_FIFO_RST,
+ BASE_CFG + ICPU_MEMPHY_CFG);
+ writel(memphy_cfg & ~ICPU_MEMPHY_CFG_PHY_FIFO_RST,
+ BASE_CFG + ICPU_MEMPHY_CFG);
+ writel(memphy_cfg | ICPU_MEMPHY_CFG_PHY_FIFO_RST,
+ BASE_CFG + ICPU_MEMPHY_CFG);
+}
+
+static inline void hal_vcoreiii_ddr_verified(void)
+{
+}
+
+static inline int look_for(u32 data)
+{
+ register u32 byte = ((volatile u8 *)MSCC_DDR_TO)[0];
+
+ if (data != byte) {
+ if (!incr_dly(0))
+ return DDR_TRAIN_ERROR;
+ return DDR_TRAIN_CONTINUE;
+ }
+
+ return DDR_TRAIN_OK;
+}
+
+/* This algorithm is converted from the TCL training algorithm used
+ * during silicon simulation.
+ * NB: Assumes inlining as no stack is available!
+ */
+static inline int hal_vcoreiii_train_bytelane(u32 bytelane)
+{
+ register int res;
+
+ set_dly(bytelane, 0); // Start training at DQS=0
+ while ((res = look_for(0xff)) == DDR_TRAIN_CONTINUE)
+ ;
+ if (res != DDR_TRAIN_OK)
+ return res;
+
+ set_dly(bytelane, 0); // Start training at DQS=0
+ while ((res = look_for(0x00)) == DDR_TRAIN_CONTINUE)
+
+ ;
+
+ if (res != DDR_TRAIN_OK)
+ return res;
+
+ adjust_dly(-3);
+
+ return DDR_TRAIN_OK;
+}
+
+static inline int hal_vcoreiii_init_dqs(void)
+{
+ return 0;
+}
+
+static inline int dram_check(void)
+{
+#define DDR ((volatile u32 *) MSCC_DDR_TO)
+ register u32 i;
+
+ for (i = 0; i < 8; i++) {
+ DDR[i] = ~i;
+ if (DDR[i] != ~i)
+ return 1;
+ }
+
+ return 0;
+}
+#endif
/*
* NB: Called *early* to init memory controller - assumes inlining as
@@ -630,12 +722,12 @@ static inline void hal_vcoreiii_init_memctl(void)
/* Wait for ZCAL to clear */
while (readl(BASE_CFG + ICPU_MEMPHY_ZCAL) & ICPU_MEMPHY_ZCAL_ZCAL_ENA)
;
-
+#ifdef CONFIG_SOC_OCELOT
/* Check no ZCAL_ERR */
if (readl(BASE_CFG + ICPU_MEMPHY_ZCAL_STAT)
& ICPU_MEMPHY_ZCAL_STAT_ZCAL_ERR)
hal_vcoreiii_ddr_failed();
-
+#endif
/* Drive CL, CK, ODT */
setbits_le32(BASE_CFG + ICPU_MEMPHY_CFG, ICPU_MEMPHY_CFG_PHY_ODT_OE |
ICPU_MEMPHY_CFG_PHY_CK_OE | ICPU_MEMPHY_CFG_PHY_CL_OE);
@@ -644,7 +736,12 @@ static inline void hal_vcoreiii_init_memctl(void)
writel(MSCC_MEMPARM_MEMCFG, BASE_CFG + ICPU_MEMCTRL_CFG);
writel(MSCC_MEMPARM_PERIOD, BASE_CFG + ICPU_MEMCTRL_REF_PERIOD);
+#ifdef CONFIG_SOC_OCELOT
writel(MSCC_MEMPARM_TIMING0, BASE_CFG + ICPU_MEMCTRL_TIMING0);
+#else /* Luton */
+ clrbits_le32(BASE_CFG + ICPU_MEMCTRL_TIMING0, ((1 << 20) - 1));
+ setbits_le32(BASE_CFG + ICPU_MEMCTRL_TIMING0, MSCC_MEMPARM_TIMING0);
+#endif
writel(MSCC_MEMPARM_TIMING1, BASE_CFG + ICPU_MEMCTRL_TIMING1);
writel(MSCC_MEMPARM_TIMING2, BASE_CFG + ICPU_MEMCTRL_TIMING2);
@@ -654,6 +751,7 @@ static inline void hal_vcoreiii_init_memctl(void)
writel(MSCC_MEMPARM_MR2, BASE_CFG + ICPU_MEMCTRL_MR2_VAL);
writel(MSCC_MEMPARM_MR3, BASE_CFG + ICPU_MEMCTRL_MR3_VAL);
+#ifdef CONFIG_SOC_OCELOT
/* Termination setup - enable ODT */
writel(ICPU_MEMCTRL_TERMRES_CTRL_LOCAL_ODT_RD_ENA |
/* Assert ODT0 for any write */
@@ -664,6 +762,11 @@ static inline void hal_vcoreiii_init_memctl(void)
hal_vcoreiii_ddr_reset_release();
writel(readl(BASE_CFG + ICPU_GPR(7)) + 1, BASE_CFG + ICPU_GPR(7));
+#else /* Luton */
+ /* Termination setup - disable ODT */
+ writel(0, BASE_CFG + ICPU_MEMCTRL_TERMRES_CTRL);
+
+#endif
}
static inline void hal_vcoreiii_wait_memctl(void)
@@ -677,7 +780,7 @@ static inline void hal_vcoreiii_wait_memctl(void)
/* Settle...? */
sleep_100ns(10000);
-
+#ifdef CONFIG_SOC_OCELOT
/* Establish data contents in DDR RAM for training */
__raw_writel(0xcacafefe, ((void __iomem *)MSCC_DDR_TO));
@@ -688,5 +791,8 @@ static inline void hal_vcoreiii_wait_memctl(void)
__raw_writel(0xaaaa9999, ((void __iomem *)MSCC_DDR_TO + 0x14));
__raw_writel(0xccccbbbb, ((void __iomem *)MSCC_DDR_TO + 0x18));
__raw_writel(0xeeeedddd, ((void __iomem *)MSCC_DDR_TO + 0x1C));
+#else
+ __raw_writel(0xff, ((void __iomem *)MSCC_DDR_TO));
+#endif
}
#endif /* __ASM_MACH_DDR_H */
diff --git a/arch/mips/mach-mscc/include/mach/luton/luton.h b/arch/mips/mach-mscc/include/mach/luton/luton.h
new file mode 100644
index 0000000000..19f02ede66
--- /dev/null
+++ b/arch/mips/mach-mscc/include/mach/luton/luton.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/*
+ * Microsemi Ocelot Switch driver
+ *
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+#ifndef _MSCC_OCELOT_H_
+#define _MSCC_OCELOT_H_
+
+#include <linux/bitops.h>
+#include <dm.h>
+
+/*
+ * Target offset base(s)
+ */
+#define MSCC_IO_ORIGIN1_OFFSET 0x60000000
+#define MSCC_IO_ORIGIN1_SIZE 0x01000000
+#define MSCC_IO_ORIGIN2_OFFSET 0x70000000
+#define MSCC_IO_ORIGIN2_SIZE 0x00200000
+#define BASE_CFG ((void __iomem *)0x70000000)
+#define BASE_DEVCPU_GCB ((void __iomem *)0x60070000)
+
+#endif
diff --git a/arch/mips/mach-mscc/include/mach/luton/luton_devcpu_gcb.h b/arch/mips/mach-mscc/include/mach/luton/luton_devcpu_gcb.h
new file mode 100644
index 0000000000..8c0b612325
--- /dev/null
+++ b/arch/mips/mach-mscc/include/mach/luton/luton_devcpu_gcb.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/*
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+#ifndef _MSCC_OCELOT_DEVCPU_GCB_H_
+#define _MSCC_OCELOT_DEVCPU_GCB_H_
+
+#define PERF_SOFT_RST 0x90
+
+#define PERF_SOFT_RST_SOFT_SWC_RST BIT(1)
+#define PERF_SOFT_RST_SOFT_CHIP_RST BIT(0)
+
+#endif
diff --git a/arch/mips/mach-mscc/include/mach/luton/luton_icpu_cfg.h b/arch/mips/mach-mscc/include/mach/luton/luton_icpu_cfg.h
new file mode 100644
index 0000000000..9233f037bb
--- /dev/null
+++ b/arch/mips/mach-mscc/include/mach/luton/luton_icpu_cfg.h
@@ -0,0 +1,245 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/*
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+#ifndef _MSCC_OCELOT_ICPU_CFG_H_
+#define _MSCC_OCELOT_ICPU_CFG_H_
+
+#define ICPU_GPR(x) (0x4 * (x))
+#define ICPU_GPR_RSZ 0x4
+
+#define ICPU_RESET 0x20
+
+#define ICPU_RESET_CORE_RST_CPU_ONLY BIT(3)
+#define ICPU_RESET_CORE_RST_PROTECT BIT(2)
+#define ICPU_RESET_CORE_RST_FORCE BIT(1)
+#define ICPU_RESET_MEM_RST_FORCE BIT(0)
+
+#define ICPU_GENERAL_CTRL 0x24
+
+#define ICPU_GENERAL_CTRL_SWC_CLEAR_IF BIT(6)
+#define ICPU_GENERAL_CTRL_CPU_BUSIF_SLEEP_DIS BIT(5)
+#define ICPU_GENERAL_CTRL_CPU_BUSIF_WERR_ENA BIT(4)
+#define ICPU_GENERAL_CTRL_IF_MASTER_DIS BIT(3)
+#define ICPU_GENERAL_CTRL_IF_MASTER_SPI_ENA BIT(2)
+#define ICPU_GENERAL_CTRL_IF_MASTER_PI_ENA BIT(1)
+
+#define ICPU_GENERAL_CTRL_BOOT_MODE_ENA BIT(0)
+
+#define ICPU_PI_MST_CFG 0x2c
+
+#define ICPU_PI_MST_CFG_ATE_MODE_DIS BIT(7)
+#define ICPU_PI_MST_CFG_CLK_POL BIT(6)
+#define ICPU_PI_MST_CFG_TRISTATE_CTRL BIT(5)
+#define ICPU_PI_MST_CFG_CLK_DIV(x) ((x) & GENMASK(4, 0))
+#define ICPU_PI_MST_CFG_CLK_DIV_M GENMASK(4, 0)
+
+#define ICPU_SPI_MST_CFG 0x50
+
+#define ICPU_SPI_MST_CFG_FAST_READ_ENA BIT(10)
+#define ICPU_SPI_MST_CFG_CS_DESELECT_TIME(x) (((x) << 5) & GENMASK(9, 5))
+#define ICPU_SPI_MST_CFG_CS_DESELECT_TIME_M GENMASK(9, 5)
+#define ICPU_SPI_MST_CFG_CS_DESELECT_TIME_X(x) (((x) & GENMASK(9, 5)) >> 5)
+#define ICPU_SPI_MST_CFG_CLK_DIV(x) ((x) & GENMASK(4, 0))
+#define ICPU_SPI_MST_CFG_CLK_DIV_M GENMASK(4, 0)
+
+#define ICPU_SW_MODE 0x64
+
+#define ICPU_SW_MODE_SW_PIN_CTRL_MODE BIT(13)
+#define ICPU_SW_MODE_SW_SPI_SCK BIT(12)
+#define ICPU_SW_MODE_SW_SPI_SCK_OE BIT(11)
+#define ICPU_SW_MODE_SW_SPI_SDO BIT(10)
+#define ICPU_SW_MODE_SW_SPI_SDO_OE BIT(9)
+#define ICPU_SW_MODE_SW_SPI_CS(x) (((x) << 5) & GENMASK(8, 5))
+#define ICPU_SW_MODE_SW_SPI_CS_M GENMASK(8, 5)
+#define ICPU_SW_MODE_SW_SPI_CS_X(x) (((x) & GENMASK(8, 5)) >> 5)
+#define ICPU_SW_MODE_SW_SPI_CS_OE(x) (((x) << 1) & GENMASK(4, 1))
+#define ICPU_SW_MODE_SW_SPI_CS_OE_M GENMASK(4, 1)
+#define ICPU_SW_MODE_SW_SPI_CS_OE_X(x) (((x) & GENMASK(4, 1)) >> 1)
+#define ICPU_SW_MODE_SW_SPI_SDI BIT(0)
+
+#define ICPU_INTR_ENA 0x88
+
+#define ICPU_INTR_IRQ0_ENA 0x98
+#define ICPU_INTR_IRQ0_ENA_IRQ0_ENA BIT(0)
+
+#define ICPU_MEMCTRL_CTRL 0x234
+
+#define ICPU_MEMCTRL_CTRL_PWR_DOWN BIT(3)
+#define ICPU_MEMCTRL_CTRL_MDSET BIT(2)
+#define ICPU_MEMCTRL_CTRL_STALL_REF_ENA BIT(1)
+#define ICPU_MEMCTRL_CTRL_INITIALIZE BIT(0)
+
+#define ICPU_MEMCTRL_CFG 0x238
+
+#define ICPU_MEMCTRL_CFG_DDR_512MBYTE_PLUS BIT(16)
+#define ICPU_MEMCTRL_CFG_DDR_ECC_ERR_ENA BIT(15)
+#define ICPU_MEMCTRL_CFG_DDR_ECC_COR_ENA BIT(14)
+#define ICPU_MEMCTRL_CFG_DDR_ECC_ENA BIT(13)
+#define ICPU_MEMCTRL_CFG_DDR_WIDTH BIT(12)
+#define ICPU_MEMCTRL_CFG_DDR_MODE BIT(11)
+#define ICPU_MEMCTRL_CFG_BURST_SIZE BIT(10)
+#define ICPU_MEMCTRL_CFG_BURST_LEN BIT(9)
+#define ICPU_MEMCTRL_CFG_BANK_CNT BIT(8)
+#define ICPU_MEMCTRL_CFG_MSB_ROW_ADDR(x) (((x) << 4) & GENMASK(7, 4))
+#define ICPU_MEMCTRL_CFG_MSB_ROW_ADDR_M GENMASK(7, 4)
+#define ICPU_MEMCTRL_CFG_MSB_ROW_ADDR_X(x) (((x) & GENMASK(7, 4)) >> 4)
+#define ICPU_MEMCTRL_CFG_MSB_COL_ADDR(x) ((x) & GENMASK(3, 0))
+#define ICPU_MEMCTRL_CFG_MSB_COL_ADDR_M GENMASK(3, 0)
+
+#define ICPU_MEMCTRL_STAT 0x23C
+
+#define ICPU_MEMCTRL_STAT_RDATA_MASKED BIT(5)
+#define ICPU_MEMCTRL_STAT_RDATA_DUMMY BIT(4)
+#define ICPU_MEMCTRL_STAT_RDATA_ECC_ERR BIT(3)
+#define ICPU_MEMCTRL_STAT_RDATA_ECC_COR BIT(2)
+#define ICPU_MEMCTRL_STAT_PWR_DOWN_ACK BIT(1)
+#define ICPU_MEMCTRL_STAT_INIT_DONE BIT(0)
+
+#define ICPU_MEMCTRL_REF_PERIOD 0x240
+
+#define ICPU_MEMCTRL_REF_PERIOD_MAX_PEND_REF(x) (((x) << 16) & GENMASK(19, 16))
+#define ICPU_MEMCTRL_REF_PERIOD_MAX_PEND_REF_M GENMASK(19, 16)
+#define ICPU_MEMCTRL_REF_PERIOD_MAX_PEND_REF_X(x) (((x) & GENMASK(19, 16)) >> 16)
+#define ICPU_MEMCTRL_REF_PERIOD_REF_PERIOD(x) ((x) & GENMASK(15, 0))
+#define ICPU_MEMCTRL_REF_PERIOD_REF_PERIOD_M GENMASK(15, 0)
+
+#define ICPU_MEMCTRL_TIMING0 0x248
+
+#define ICPU_MEMCTRL_TIMING0_RD_TO_WR_DLY(x) (((x) << 28) & GENMASK(31, 28))
+#define ICPU_MEMCTRL_TIMING0_RD_TO_WR_DLY_M GENMASK(31, 28)
+#define ICPU_MEMCTRL_TIMING0_RD_TO_WR_DLY_X(x) (((x) & GENMASK(31, 28)) >> 28)
+#define ICPU_MEMCTRL_TIMING0_WR_CS_CHANGE_DLY(x) (((x) << 24) & GENMASK(27, 24))
+#define ICPU_MEMCTRL_TIMING0_WR_CS_CHANGE_DLY_M GENMASK(27, 24)
+#define ICPU_MEMCTRL_TIMING0_WR_CS_CHANGE_DLY_X(x) (((x) & GENMASK(27, 24)) >> 24)
+#define ICPU_MEMCTRL_TIMING0_RD_CS_CHANGE_DLY(x) (((x) << 20) & GENMASK(23, 20))
+#define ICPU_MEMCTRL_TIMING0_RD_CS_CHANGE_DLY_M GENMASK(23, 20)
+#define ICPU_MEMCTRL_TIMING0_RD_CS_CHANGE_DLY_X(x) (((x) & GENMASK(23, 20)) >> 20)
+#define ICPU_MEMCTRL_TIMING0_RAS_TO_PRECH_DLY(x) (((x) << 16) & GENMASK(19, 16))
+#define ICPU_MEMCTRL_TIMING0_RAS_TO_PRECH_DLY_M GENMASK(19, 16)
+#define ICPU_MEMCTRL_TIMING0_RAS_TO_PRECH_DLY_X(x) (((x) & GENMASK(19, 16)) >> 16)
+#define ICPU_MEMCTRL_TIMING0_WR_TO_PRECH_DLY(x) (((x) << 12) & GENMASK(15, 12))
+#define ICPU_MEMCTRL_TIMING0_WR_TO_PRECH_DLY_M GENMASK(15, 12)
+#define ICPU_MEMCTRL_TIMING0_WR_TO_PRECH_DLY_X(x) (((x) & GENMASK(15, 12)) >> 12)
+#define ICPU_MEMCTRL_TIMING0_RD_TO_PRECH_DLY(x) (((x) << 8) & GENMASK(11, 8))
+#define ICPU_MEMCTRL_TIMING0_RD_TO_PRECH_DLY_M GENMASK(11, 8)
+#define ICPU_MEMCTRL_TIMING0_RD_TO_PRECH_DLY_X(x) (((x) & GENMASK(11, 8)) >> 8)
+#define ICPU_MEMCTRL_TIMING0_WR_DATA_XFR_DLY(x) (((x) << 4) & GENMASK(7, 4))
+#define ICPU_MEMCTRL_TIMING0_WR_DATA_XFR_DLY_M GENMASK(7, 4)
+#define ICPU_MEMCTRL_TIMING0_WR_DATA_XFR_DLY_X(x) (((x) & GENMASK(7, 4)) >> 4)
+#define ICPU_MEMCTRL_TIMING0_RD_DATA_XFR_DLY(x) ((x) & GENMASK(3, 0))
+#define ICPU_MEMCTRL_TIMING0_RD_DATA_XFR_DLY_M GENMASK(3, 0)
+
+#define ICPU_MEMCTRL_TIMING1 0x24c
+
+#define ICPU_MEMCTRL_TIMING1_RAS_TO_RAS_SAME_BANK_DLY(x) (((x) << 24) & GENMASK(31, 24))
+#define ICPU_MEMCTRL_TIMING1_RAS_TO_RAS_SAME_BANK_DLY_M GENMASK(31, 24)
+#define ICPU_MEMCTRL_TIMING1_RAS_TO_RAS_SAME_BANK_DLY_X(x) (((x) & GENMASK(31, 24)) >> 24)
+#define ICPU_MEMCTRL_TIMING1_BANK8_FAW_DLY(x) (((x) << 16) & GENMASK(23, 16))
+#define ICPU_MEMCTRL_TIMING1_BANK8_FAW_DLY_M GENMASK(23, 16)
+#define ICPU_MEMCTRL_TIMING1_BANK8_FAW_DLY_X(x) (((x) & GENMASK(23, 16)) >> 16)
+#define ICPU_MEMCTRL_TIMING1_PRECH_TO_RAS_DLY(x) (((x) << 12) & GENMASK(15, 12))
+#define ICPU_MEMCTRL_TIMING1_PRECH_TO_RAS_DLY_M GENMASK(15, 12)
+#define ICPU_MEMCTRL_TIMING1_PRECH_TO_RAS_DLY_X(x) (((x) & GENMASK(15, 12)) >> 12)
+#define ICPU_MEMCTRL_TIMING1_RAS_TO_RAS_DLY(x) (((x) << 8) & GENMASK(11, 8))
+#define ICPU_MEMCTRL_TIMING1_RAS_TO_RAS_DLY_M GENMASK(11, 8)
+#define ICPU_MEMCTRL_TIMING1_RAS_TO_RAS_DLY_X(x) (((x) & GENMASK(11, 8)) >> 8)
+#define ICPU_MEMCTRL_TIMING1_RAS_TO_CAS_DLY(x) (((x) << 4) & GENMASK(7, 4))
+#define ICPU_MEMCTRL_TIMING1_RAS_TO_CAS_DLY_M GENMASK(7, 4)
+#define ICPU_MEMCTRL_TIMING1_RAS_TO_CAS_DLY_X(x) (((x) & GENMASK(7, 4)) >> 4)
+#define ICPU_MEMCTRL_TIMING1_WR_TO_RD_DLY(x) ((x) & GENMASK(3, 0))
+#define ICPU_MEMCTRL_TIMING1_WR_TO_RD_DLY_M GENMASK(3, 0)
+
+#define ICPU_MEMCTRL_TIMING2 0x250
+
+#define ICPU_MEMCTRL_TIMING2_PRECH_ALL_DLY(x) (((x) << 28) & GENMASK(31, 28))
+#define ICPU_MEMCTRL_TIMING2_PRECH_ALL_DLY_M GENMASK(31, 28)
+#define ICPU_MEMCTRL_TIMING2_PRECH_ALL_DLY_X(x) (((x) & GENMASK(31, 28)) >> 28)
+#define ICPU_MEMCTRL_TIMING2_MDSET_DLY(x) (((x) << 24) & GENMASK(27, 24))
+#define ICPU_MEMCTRL_TIMING2_MDSET_DLY_M GENMASK(27, 24)
+#define ICPU_MEMCTRL_TIMING2_MDSET_DLY_X(x) (((x) & GENMASK(27, 24)) >> 24)
+#define ICPU_MEMCTRL_TIMING2_REF_DLY(x) (((x) << 16) & GENMASK(23, 16))
+#define ICPU_MEMCTRL_TIMING2_REF_DLY_M GENMASK(23, 16)
+#define ICPU_MEMCTRL_TIMING2_REF_DLY_X(x) (((x) & GENMASK(23, 16)) >> 16)
+#define ICPU_MEMCTRL_TIMING2_FOUR_HUNDRED_NS_DLY(x) ((x) & GENMASK(15, 0))
+#define ICPU_MEMCTRL_TIMING2_FOUR_HUNDRED_NS_DLY_M GENMASK(15, 0)
+
+#define ICPU_MEMCTRL_TIMING3 0x254
+
+#define ICPU_MEMCTRL_TIMING3_RMW_DLY(x) (((x) << 16) & GENMASK(19, 16))
+#define ICPU_MEMCTRL_TIMING3_RMW_DLY_M GENMASK(19, 16)
+#define ICPU_MEMCTRL_TIMING3_RMW_DLY_X(x) (((x) & GENMASK(19, 16)) >> 16)
+#define ICPU_MEMCTRL_TIMING3_ODT_RD_DLY(x) (((x) << 12) & GENMASK(15, 12))
+#define ICPU_MEMCTRL_TIMING3_ODT_RD_DLY_M GENMASK(15, 12)
+#define ICPU_MEMCTRL_TIMING3_ODT_RD_DLY_X(x) (((x) & GENMASK(15, 12)) >> 12)
+#define ICPU_MEMCTRL_TIMING3_ODT_WR_DLY(x) (((x) << 8) & GENMASK(11, 8))
+#define ICPU_MEMCTRL_TIMING3_ODT_WR_DLY_M GENMASK(11, 8)
+#define ICPU_MEMCTRL_TIMING3_ODT_WR_DLY_X(x) (((x) & GENMASK(11, 8)) >> 8)
+#define ICPU_MEMCTRL_TIMING3_LOCAL_ODT_RD_DLY(x) (((x) << 4) & GENMASK(7, 4))
+#define ICPU_MEMCTRL_TIMING3_LOCAL_ODT_RD_DLY_M GENMASK(7, 4)
+#define ICPU_MEMCTRL_TIMING3_LOCAL_ODT_RD_DLY_X(x) (((x) & GENMASK(7, 4)) >> 4)
+#define ICPU_MEMCTRL_TIMING3_WR_TO_RD_CS_CHANGE_DLY(x) ((x) & GENMASK(3, 0))
+#define ICPU_MEMCTRL_TIMING3_WR_TO_RD_CS_CHANGE_DLY_M GENMASK(3, 0)
+
+#define ICPU_MEMCTRL_MR0_VAL 0x258
+
+#define ICPU_MEMCTRL_MR1_VAL 0x25c
+
+#define ICPU_MEMCTRL_MR2_VAL 0x260
+
+#define ICPU_MEMCTRL_MR3_VAL 0x264
+
+#define ICPU_MEMCTRL_TERMRES_CTRL 0x268
+
+#define ICPU_MEMCTRL_TERMRES_CTRL_ODT_RD_EXT BIT(11)
+#define ICPU_MEMCTRL_TERMRES_CTRL_ODT_RD_ENA(x) (((x) << 7) & GENMASK(10, 7))
+#define ICPU_MEMCTRL_TERMRES_CTRL_ODT_RD_ENA_M GENMASK(10, 7)
+#define ICPU_MEMCTRL_TERMRES_CTRL_ODT_RD_ENA_X(x) (((x) & GENMASK(10, 7)) >> 7)
+#define ICPU_MEMCTRL_TERMRES_CTRL_ODT_WR_EXT BIT(6)
+#define ICPU_MEMCTRL_TERMRES_CTRL_ODT_WR_ENA(x) (((x) << 2) & GENMASK(5, 2))
+#define ICPU_MEMCTRL_TERMRES_CTRL_ODT_WR_ENA_M GENMASK(5, 2)
+#define ICPU_MEMCTRL_TERMRES_CTRL_ODT_WR_ENA_X(x) (((x) & GENMASK(5, 2)) >> 2)
+#define ICPU_MEMCTRL_TERMRES_CTRL_LOCAL_ODT_RD_EXT BIT(1)
+#define ICPU_MEMCTRL_TERMRES_CTRL_LOCAL_ODT_RD_ENA BIT(0)
+
+#define ICPU_MEMCTRL_DQS_DLY(x) (0x270)
+
+#define ICPU_MEMCTRL_DQS_DLY_TRAIN_DQ_ENA BIT(11)
+#define ICPU_MEMCTRL_DQS_DLY_DQS_DLY_TRM1(x) (((x) << 8) & GENMASK(10, 8))
+#define ICPU_MEMCTRL_DQS_DLY_DQS_DLY_TRM1_M GENMASK(10, 8)
+#define ICPU_MEMCTRL_DQS_DLY_DQS_DLY_TRM1_X(x) (((x) & GENMASK(10, 8)) >> 8)
+#define ICPU_MEMCTRL_DQS_DLY_DQS_DLY_TRM0(x) (((x) << 5) & GENMASK(7, 5))
+#define ICPU_MEMCTRL_DQS_DLY_DQS_DLY_TRM0_M GENMASK(7, 5)
+#define ICPU_MEMCTRL_DQS_DLY_DQS_DLY_TRM0_X(x) (((x) & GENMASK(7, 5)) >> 5)
+#define ICPU_MEMCTRL_DQS_DLY_DQS_DLY(x) ((x) & GENMASK(4, 0))
+#define ICPU_MEMCTRL_DQS_DLY_DQS_DLY_M GENMASK(4, 0)
+
+#define ICPU_MEMPHY_CFG 0x278
+
+#define ICPU_MEMPHY_CFG_PHY_FLUSH_DIS BIT(10)
+#define ICPU_MEMPHY_CFG_PHY_RD_ADJ_DIS BIT(9)
+#define ICPU_MEMPHY_CFG_PHY_DQS_EXT BIT(8)
+#define ICPU_MEMPHY_CFG_PHY_FIFO_RST BIT(7)
+#define ICPU_MEMPHY_CFG_PHY_DLL_BL_RST BIT(6)
+#define ICPU_MEMPHY_CFG_PHY_DLL_CL_RST BIT(5)
+#define ICPU_MEMPHY_CFG_PHY_ODT_OE BIT(4)
+#define ICPU_MEMPHY_CFG_PHY_CK_OE BIT(3)
+#define ICPU_MEMPHY_CFG_PHY_CL_OE BIT(2)
+#define ICPU_MEMPHY_CFG_PHY_SSTL_ENA BIT(1)
+#define ICPU_MEMPHY_CFG_PHY_RST BIT(0)
+#define ICPU_MEMPHY_DQ_DLY_TRM 0x180
+#define ICPU_MEMPHY_DQ_DLY_TRM_RSZ 0x4
+
+#define ICPU_MEMPHY_ZCAL 0x294
+
+#define ICPU_MEMPHY_ZCAL_ZCAL_CLK_SEL BIT(9)
+#define ICPU_MEMPHY_ZCAL_ZCAL_PROG_ODT(x) (((x) << 5) & GENMASK(8, 5))
+#define ICPU_MEMPHY_ZCAL_ZCAL_PROG_ODT_M GENMASK(8, 5)
+#define ICPU_MEMPHY_ZCAL_ZCAL_PROG_ODT_X(x) (((x) & GENMASK(8, 5)) >> 5)
+#define ICPU_MEMPHY_ZCAL_ZCAL_PROG(x) (((x) << 1) & GENMASK(4, 1))
+#define ICPU_MEMPHY_ZCAL_ZCAL_PROG_M GENMASK(4, 1)
+#define ICPU_MEMPHY_ZCAL_ZCAL_PROG_X(x) (((x) & GENMASK(4, 1)) >> 1)
+#define ICPU_MEMPHY_ZCAL_ZCAL_ENA BIT(0)
+
+#endif
diff --git a/arch/mips/mach-mscc/lowlevel_init.S b/arch/mips/mach-mscc/lowlevel_init.S
index 8e4f0d02c8..1624bd6f55 100644
--- a/arch/mips/mach-mscc/lowlevel_init.S
+++ b/arch/mips/mach-mscc/lowlevel_init.S
@@ -8,6 +8,9 @@
.set noreorder
.extern vcoreiii_tlb_init
+#ifdef CONFIG_SOC_LUTON
+ .extern pll_init
+#endif
LEAF(lowlevel_init)
/*
@@ -18,6 +21,10 @@ LEAF(lowlevel_init)
jal vcoreiii_tlb_init
nop
+#ifdef CONFIG_SOC_LUTON
+ jal pll_init
+ nop
+#endif
jr s0
nop
END(lowlevel_init)
diff --git a/arch/mips/mach-mscc/lowlevel_init_luton.S b/arch/mips/mach-mscc/lowlevel_init_luton.S
new file mode 100644
index 0000000000..6b298a99da
--- /dev/null
+++ b/arch/mips/mach-mscc/lowlevel_init_luton.S
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/*
+ * Copyright (c) 2018 Microsemi Corporation
+ */
+
+#include <asm/asm.h>
+#include <asm/regdef.h>
+
+#define BASE_MACRO 0x600a0000
+#define REG_OFFSET(t, o) (t + (o*4))
+#define REG_MACRO(x) REG_OFFSET(BASE_MACRO, x)
+#define BIT(nr) (1 << (nr))
+
+#define MACRO_CTRL_PLL5G_STATUS_PLL5G_STATUS0 REG_MACRO(6)
+#define MACRO_CTRL_PLL5G_STATUS_PLL5G_STATUS0_LOCK_STATUS BIT(0)
+#define MACRO_CTRL_PLL5G_CFG_PLL5G_CFG2 REG_MACRO(2)
+#define MACRO_CTRL_PLL5G_CFG_PLL5G_CFG0 REG_MACRO(0)
+#define MACRO_CTRL_PLL5G_CFG_PLL5G_CFG0_CPU_CLK_DIV (0x3F << 6)
+#define MACRO_CTRL_PLL5G_CFG_PLL5G_CFG0_CPU_CLK_DIV_ENC(x) (x << 6)
+
+ .set noreorder
+LEAF(pll_init)
+ /* Make sure PLL is locked */
+ lw v0, MACRO_CTRL_PLL5G_STATUS_PLL5G_STATUS0
+ andi v1, v0, MACRO_CTRL_PLL5G_STATUS_PLL5G_STATUS0_LOCK_STATUS
+ bne v1, zero, 1f
+ nop
+
+ /* Black magic from frontend */
+ li v1, 0x00610400
+ sw v1, MACRO_CTRL_PLL5G_CFG_PLL5G_CFG2
+
+ li v1, 0x00610c00
+ sw v1, MACRO_CTRL_PLL5G_CFG_PLL5G_CFG2
+
+ li v1, 0x00610800
+ sw v1, MACRO_CTRL_PLL5G_CFG_PLL5G_CFG2
+
+ li v1, 0x00610000
+ sw v1, MACRO_CTRL_PLL5G_CFG_PLL5G_CFG2
+
+ /* Wait for lock */
+2: lw v0, MACRO_CTRL_PLL5G_STATUS_PLL5G_STATUS0
+ andi v1, v0, MACRO_CTRL_PLL5G_STATUS_PLL5G_STATUS0_LOCK_STATUS
+ # Keep looping if zero (no lock bit yet)
+ beq v1, zero, 2b
+ nop
+
+ /* Setup PLL CPU clock divider for 416MHz */
+1: lw v0, MACRO_CTRL_PLL5G_CFG_PLL5G_CFG0
+
+ /* Keep reserved bits */
+ li v1, ~MACRO_CTRL_PLL5G_CFG_PLL5G_CFG0_CPU_CLK_DIV
+ and v0, v0, v1
+
+ /* Set code 6 ~ 416.66 MHz */
+ ori v0, v0, MACRO_CTRL_PLL5G_CFG_PLL5G_CFG0_CPU_CLK_DIV_ENC(6)
+
+ sw v0, MACRO_CTRL_PLL5G_CFG_PLL5G_CFG0
+ jr ra
+ nop
+ END(pll_init)
--
2.19.2
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