stv0991: Add basic stv0991 architecture support

stv0991 architecture support added. It contains the support for
following blocks
- Timer
- uart

Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
[trini: Add arch/arm/cpu/armv7/Makefile hunk]
Signed-off-by: Tom Rini <trini@ti.com>

15 files changed, 607 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7a64b66..6881f36 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -341,6 +341,10 @@ config TARGET_SPEAR600
 	bool "Support spear600"
 	select CPU_ARM926EJS
 
+config TARGET_STV0991
+	bool "Support stv0991"
+	select CPU_V7
+
 config TARGET_X600
 	bool "Support x600"
 	select CPU_ARM926EJS
@@ -953,6 +957,7 @@ source "board/spear/spear600/Kconfig"
 source "board/spear/x600/Kconfig"
 source "board/st-ericsson/snowball/Kconfig"
 source "board/st-ericsson/u8500/Kconfig"
+source "board/st/stv0991/Kconfig"
 source "board/sunxi/Kconfig"
 source "board/syteco/jadecpu/Kconfig"
 source "board/syteco/zmx25/Kconfig"
diff --git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile
index e419716..409e6f5 100644
--- a/arch/arm/cpu/armv7/Makefile
+++ b/arch/arm/cpu/armv7/Makefile
@@ -56,6 +56,7 @@ obj-$(CONFIG_OMAP54XX) += omap5/
 obj-$(CONFIG_RMOBILE) += rmobile/
 obj-$(CONFIG_ARCH_S5PC1XX) += s5pc1xx/
 obj-$(CONFIG_SOCFPGA) += socfpga/
+obj-$(if $(filter stv0991,$(SOC)),y) += stv0991/
 obj-$(CONFIG_ARCH_SUNXI) += sunxi/
 obj-$(CONFIG_TEGRA20) += tegra20/
 obj-$(CONFIG_U8500) += u8500/
diff --git a/arch/arm/cpu/armv7/stv0991/Makefile b/arch/arm/cpu/armv7/stv0991/Makefile
new file mode 100644
index 0000000..95641d3
--- /dev/null
+++ b/arch/arm/cpu/armv7/stv0991/Makefile
@@ -0,0 +1,9 @@
+#
+# (C) Copyright 2014
+# Vikas Manocha, ST Microelectronics, vikas.manocha@stcom
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	:= timer.o clock.o pinmux.o reset.o
+obj-y	+= lowlevel.o
diff --git a/arch/arm/cpu/armv7/stv0991/clock.c b/arch/arm/cpu/armv7/stv0991/clock.c
new file mode 100644
index 0000000..aca6aba
--- /dev/null
+++ b/arch/arm/cpu/armv7/stv0991/clock.c
@@ -0,0 +1,27 @@
+/*
+ * (C) Copyright 2014
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/stv0991_cgu.h>
+#include<asm/arch/stv0991_periph.h>
+
+static struct stv0991_cgu_regs *const stv0991_cgu_regs = \
+				(struct stv0991_cgu_regs *) (CGU_BASE_ADDR);
+
+void clock_setup(int peripheral)
+{
+	switch (peripheral) {
+	case UART_CLOCK_CFG:
+		writel(UART_CLK_CFG, &stv0991_cgu_regs->uart_freq);
+		break;
+	case ETH_CLOCK_CFG:
+		break;
+	default:
+		break;
+	}
+}
diff --git a/arch/arm/cpu/armv7/stv0991/lowlevel.S b/arch/arm/cpu/armv7/stv0991/lowlevel.S
new file mode 100644
index 0000000..6dafba3
--- /dev/null
+++ b/arch/arm/cpu/armv7/stv0991/lowlevel.S
@@ -0,0 +1,12 @@
+/*
+ * (C) Copyright 2014 stmicroelectronics
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+
+ENTRY(lowlevel_init)
+	mov	pc, lr
+ENDPROC(lowlevel_init)
diff --git a/arch/arm/cpu/armv7/stv0991/pinmux.c b/arch/arm/cpu/armv7/stv0991/pinmux.c
new file mode 100644
index 0000000..6d4414a
--- /dev/null
+++ b/arch/arm/cpu/armv7/stv0991/pinmux.c
@@ -0,0 +1,48 @@
+/*
+ * (C) Copyright 2014
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/io.h>
+#include <asm/arch/stv0991_creg.h>
+#include <asm/arch/stv0991_periph.h>
+#include <asm/arch/hardware.h>
+
+static struct stv0991_creg *const stv0991_creg = \
+			(struct stv0991_creg *)CREG_BASE_ADDR;
+
+int stv0991_pinmux_config(int peripheral)
+{
+	switch (peripheral) {
+	case UART_GPIOC_30_31:
+		/* SSDA/SSCL pad muxing to UART Rx/Dx */
+		writel((readl(&stv0991_creg->mux12) & GPIOC_31_MUX_MASK) |
+				CFG_GPIOC_31_UART_RX,
+				&stv0991_creg->mux12);
+		writel((readl(&stv0991_creg->mux12) & GPIOC_30_MUX_MASK) |
+				CFG_GPIOC_30_UART_TX,
+				&stv0991_creg->mux12);
+		/* SSDA/SSCL pad config to push pull*/
+		writel((readl(&stv0991_creg->cfg_pad6) & GPIOC_31_MODE_MASK) |
+				CFG_GPIOC_31_MODE_PP,
+				&stv0991_creg->cfg_pad6);
+		writel((readl(&stv0991_creg->cfg_pad6) & GPIOC_30_MODE_MASK) |
+				CFG_GPIOC_30_MODE_HIGH,
+				&stv0991_creg->cfg_pad6);
+		break;
+	case UART_GPIOB_16_17:
+		/* ethernet rx_6/7 to UART Rx/Dx */
+		writel((readl(&stv0991_creg->mux7) & GPIOB_17_MUX_MASK) |
+				CFG_GPIOB_17_UART_RX,
+				&stv0991_creg->mux7);
+		writel((readl(&stv0991_creg->mux7) & GPIOB_16_MUX_MASK) |
+				CFG_GPIOB_16_UART_TX,
+				&stv0991_creg->mux7);
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
diff --git a/arch/arm/cpu/armv7/stv0991/reset.c b/arch/arm/cpu/armv7/stv0991/reset.c
new file mode 100644
index 0000000..3384b32
--- /dev/null
+++ b/arch/arm/cpu/armv7/stv0991/reset.c
@@ -0,0 +1,26 @@
+/*
+ * (C) Copyright 2014
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/stv0991_wdru.h>
+void reset_cpu(ulong ignored)
+{
+	puts("System is going to reboot ...\n");
+	/*
+	 * This 1 second delay will allow the above message
+	 * to be printed before reset
+	 */
+	udelay((1000 * 1000));
+
+	/* Setting bit 1 of the WDRU unit will reset the SoC */
+	writel(WDRU_RST_SYS, &stv0991_wd_ru_ptr->wdru_ctrl1);
+
+	/* system will restart */
+	while (1)
+		;
+}
diff --git a/arch/arm/cpu/armv7/stv0991/timer.c b/arch/arm/cpu/armv7/stv0991/timer.c
new file mode 100644
index 0000000..8654b8b
--- /dev/null
+++ b/arch/arm/cpu/armv7/stv0991/timer.c
@@ -0,0 +1,114 @@
+/*
+ * (C) Copyright 2014
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch-stv0991/hardware.h>
+#include <asm/arch-stv0991/stv0991_cgu.h>
+#include <asm/arch-stv0991/stv0991_gpt.h>
+
+static struct stv0991_cgu_regs *const stv0991_cgu_regs = \
+				(struct stv0991_cgu_regs *) (CGU_BASE_ADDR);
+
+#define READ_TIMER()	(readl(&gpt1_regs_ptr->cnt) & GPT_FREE_RUNNING)
+#define GPT_RESOLUTION	(CONFIG_STV0991_HZ_CLOCK / CONFIG_STV0991_HZ)
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define timestamp gd->arch.tbl
+#define lastdec gd->arch.lastinc
+
+int timer_init(void)
+{
+	/* Timer1 clock configuration */
+	writel(TIMER1_CLK_CFG, &stv0991_cgu_regs->tim_freq);
+	writel(readl(&stv0991_cgu_regs->cgu_enable_2) |
+			TIMER1_CLK_EN, &stv0991_cgu_regs->cgu_enable_2);
+
+	/* Stop the timer */
+	writel(readl(&gpt1_regs_ptr->cr1) & ~GPT_CR1_CEN, &gpt1_regs_ptr->cr1);
+	writel(GPT_PRESCALER_128, &gpt1_regs_ptr->psc);
+	/* Configure timer for auto-reload */
+	writel(readl(&gpt1_regs_ptr->cr1) | GPT_MODE_AUTO_RELOAD,
+			&gpt1_regs_ptr->cr1);
+
+	/* load value for free running */
+	writel(GPT_FREE_RUNNING, &gpt1_regs_ptr->arr);
+
+	/* start timer */
+	writel(readl(&gpt1_regs_ptr->cr1) | GPT_CR1_CEN,
+			&gpt1_regs_ptr->cr1);
+
+	/* Reset the timer */
+	lastdec = READ_TIMER();
+	timestamp = 0;
+
+	return 0;
+}
+
+/*
+ * timer without interrupts
+ */
+ulong get_timer(ulong base)
+{
+	return (get_timer_masked() / GPT_RESOLUTION) - base;
+}
+
+void __udelay(unsigned long usec)
+{
+	ulong tmo;
+	ulong start = get_timer_masked();
+	ulong tenudelcnt = CONFIG_STV0991_HZ_CLOCK / (1000 * 100);
+	ulong rndoff;
+
+	rndoff = (usec % 10) ? 1 : 0;
+
+	/* tenudelcnt timer tick gives 10 microsecconds delay */
+	tmo = ((usec / 10) + rndoff) * tenudelcnt;
+
+	while ((ulong) (get_timer_masked() - start) < tmo)
+		;
+}
+
+ulong get_timer_masked(void)
+{
+	ulong now = READ_TIMER();
+
+	if (now >= lastdec) {
+		/* normal mode */
+		timestamp += now - lastdec;
+	} else {
+		/* we have an overflow ... */
+		timestamp += now + GPT_FREE_RUNNING - lastdec;
+	}
+	lastdec = now;
+
+	return timestamp;
+}
+
+void udelay_masked(unsigned long usec)
+{
+	return udelay(usec);
+}
+
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On ARM it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+	return get_timer(0);
+}
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+ulong get_tbclk(void)
+{
+	return CONFIG_STV0991_HZ;
+}
diff --git a/arch/arm/include/asm/arch-stv0991/hardware.h b/arch/arm/include/asm/arch-stv0991/hardware.h
new file mode 100644
index 0000000..3f6bcaf
--- /dev/null
+++ b/arch/arm/include/asm/arch-stv0991/hardware.h
@@ -0,0 +1,73 @@
+/*
+ * (C) Copyright 2014
+ * Vikas Manocha, STMicroelectronics, <vikas.manocha@st.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _ASM_ARCH_HARDWARE_H
+#define _ASM_ARCH_HARDWARE_H
+
+/* STV0991 */
+#define SRAM0_BASE_ADDR                          0x00000000UL
+#define SRAM1_BASE_ADDR                          0x00068000UL
+#define SRAM2_BASE_ADDR                          0x000D0000UL
+#define SRAM3_BASE_ADDR                          0x00138000UL
+#define CFS_SRAM0_BASE_ADDR                      0x00198000UL
+#define CFS_SRAM1_BASE_ADDR                      0x001B8000UL
+#define FAST_SRAM_BASE_ADDR                      0x001D8000UL
+#define FLASH_BASE_ADDR                          0x40000000UL
+#define PL310_BASE_ADDR                          0x70000000UL
+#define HSAXIM_BASE_ADDR                         0x70100000UL
+#define IMGSS_BASE_ADDR                          0x70200000UL
+#define ADC_BASE_ADDR                            0x80000000UL
+#define GPIOA_BASE_ADDR                          0x80001000UL
+#define GPIOB_BASE_ADDR                          0x80002000UL
+#define GPIOC_BASE_ADDR                          0x80003000UL
+#define HDM_BASE_ADDR                            0x80004000UL
+#define THSENS_BASE_ADDR                         0x80200000UL
+#define GPTIMER2_BASE_ADDR                       0x80201000UL
+#define GPTIMER1_BASE_ADDR                       0x80202000UL
+#define QSPI_BASE_ADDR                           0x80203000UL
+#define CGU_BASE_ADDR                            0x80204000UL
+#define CREG_BASE_ADDR                           0x80205000UL
+#define PEC_BASE_ADDR                            0x80206000UL
+#define WDRU_BASE_ADDR                           0x80207000UL
+#define BSEC_BASE_ADDR                           0x80208000UL
+#define DAP_ROM_BASE_ADDR                        0x80210000UL
+#define SOC_CTI_BASE_ADDR                        0x80211000UL
+#define TPIU_BASE_ADDR                           0x80212000UL
+#define TMC_ETF_BASE_ADDR                        0x80213000UL
+#define R4_ETM_BASE_ADDR                         0x80214000UL
+#define R4_CTI_BASE_ADDR                         0x80215000UL
+#define R4_DBG_BASE_ADDR                         0x80216000UL
+#define GMAC_BASE_ADDR                           0x80300000UL
+#define RNSS_BASE_ADDR                           0x80302000UL
+#define CRYP_BASE_ADDR                           0x80303000UL
+#define HASH_BASE_ADDR                           0x80304000UL
+#define GPDMA_BASE_ADDR                          0x80305000UL
+#define ISA_BASE_ADDR                            0x8032A000UL
+#define HCI_BASE_ADDR                            0x80400000UL
+#define I2C1_BASE_ADDR                           0x80401000UL
+#define I2C2_BASE_ADDR                           0x80402000UL
+#define SAI_BASE_ADDR                            0x80403000UL
+#define USI_BASE_ADDR                            0x80404000UL
+#define SPI1_BASE_ADDR                           0x80405000UL
+#define UART_BASE_ADDR                           0x80406000UL
+#define SPI2_BASE_ADDR                           0x80500000UL
+#define CAN_BASE_ADDR                            0x80501000UL
+#define USART1_BASE_ADDR                         0x80502000UL
+#define USART2_BASE_ADDR                         0x80503000UL
+#define USART3_BASE_ADDR                         0x80504000UL
+#define USART4_BASE_ADDR                         0x80505000UL
+#define USART5_BASE_ADDR                         0x80506000UL
+#define USART6_BASE_ADDR                         0x80507000UL
+#define SDI2_BASE_ADDR                           0x80600000UL
+#define SDI1_BASE_ADDR                           0x80601000UL
+#define VICA_BASE_ADDR                           0x81000000UL
+#define VICB_BASE_ADDR                           0x81001000UL
+#define STM_CHANNELS_BASE_ADDR                   0x81100000UL
+#define STM_BASE_ADDR                            0x81110000UL
+#define SROM_BASE_ADDR                           0xFFFF0000UL
+
+#endif /* _ASM_ARCH_HARDWARE_H */
diff --git a/arch/arm/include/asm/arch-stv0991/stv0991_cgu.h b/arch/arm/include/asm/arch-stv0991/stv0991_cgu.h
new file mode 100644
index 0000000..4926395
--- /dev/null
+++ b/arch/arm/include/asm/arch-stv0991/stv0991_cgu.h
@@ -0,0 +1,80 @@
+/*
+ * (C) Copyright 2014
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _STV0991_CGU_H
+#define _STV0991_CGU_H
+
+struct stv0991_cgu_regs {
+	u32 cpu_freq;		/* offset 0x0 */
+	u32 icn2_freq;		/* offset 0x4 */
+	u32 dma_freq;		/* offset 0x8 */
+	u32 isp_freq;		/* offset 0xc */
+	u32 h264_freq;		/* offset 0x10 */
+	u32 osif_freq;		/* offset 0x14 */
+	u32 ren_freq;		/* offset 0x18 */
+	u32 tim_freq;		/* offset 0x1c */
+	u32 sai_freq;		/* offset 0x20 */
+	u32 eth_freq;		/* offset 0x24 */
+	u32 i2c_freq;		/* offset 0x28 */
+	u32 spi_freq;		/* offset 0x2c */
+	u32 uart_freq;		/* offset 0x30 */
+	u32 qspi_freq;		/* offset 0x34 */
+	u32 sdio_freq;		/* offset 0x38 */
+	u32 usi_freq;		/* offset 0x3c */
+	u32 can_line_freq;	/* offset 0x40 */
+	u32 debug_freq;		/* offset 0x44 */
+	u32 trace_freq;		/* offset 0x48 */
+	u32 stm_freq;		/* offset 0x4c */
+	u32 eth_ctrl;		/* offset 0x50 */
+	u32 reserved[3];	/* offset 0x54 */
+	u32 osc_ctrl;		/* offset 0x60 */
+	u32 pll1_ctrl;		/* offset 0x64 */
+	u32 pll1_freq;		/* offset 0x68 */
+	u32 pll1_fract;		/* offset 0x6c */
+	u32 pll1_spread;	/* offset 0x70 */
+	u32 pll1_status;	/* offset 0x74 */
+	u32 pll2_ctrl;		/* offset 0x78 */
+	u32 pll2_freq;		/* offset 0x7c */
+	u32 pll2_fract;		/* offset 0x80 */
+	u32 pll2_spread;	/* offset 0x84 */
+	u32 pll2_status;	/* offset 0x88 */
+	u32 cgu_enable_1;	/* offset 0x8c */
+	u32 cgu_enable_2;	/* offset 0x90 */
+	u32 cgu_isp_pulse;	/* offset 0x94 */
+	u32 cgu_h264_pulse;	/* offset 0x98 */
+	u32 cgu_osif_pulse;	/* offset 0x9c */
+	u32 cgu_ren_pulse;	/* offset 0xa0 */
+
+};
+
+/* CGU Timer */
+#define CLK_TMR_OSC			0
+#define CLK_TMR_MCLK			1
+#define CLK_TMR_PLL1			2
+#define CLK_TMR_PLL2			3
+#define MDIV_SHIFT_TMR			3
+#define DIV_SHIFT_TMR			6
+
+#define TIMER1_CLK_CFG			(0 << DIV_SHIFT_TMR \
+					| 0 << MDIV_SHIFT_TMR | CLK_TMR_MCLK)
+
+/* Clock Enable/Disable */
+
+#define TIMER1_CLK_EN			(1 << 15)
+
+/* CGU Uart config */
+#define CLK_UART_MCLK			0
+#define CLK_UART_PLL1			1
+#define CLK_UART_PLL2			2
+
+#define MDIV_SHIFT_UART			3
+#define DIV_SHIFT_UART			6
+
+#define UART_CLK_CFG			(4 << DIV_SHIFT_UART \
+					| 1 << MDIV_SHIFT_UART | CLK_UART_MCLK)
+
+#endif
diff --git a/arch/arm/include/asm/arch-stv0991/stv0991_creg.h b/arch/arm/include/asm/arch-stv0991/stv0991_creg.h
new file mode 100644
index 0000000..045dbfe
--- /dev/null
+++ b/arch/arm/include/asm/arch-stv0991/stv0991_creg.h
@@ -0,0 +1,82 @@
+/*
+ * (C) Copyright 2014
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _STV0991_CREG_H
+#define _STV0991_CREG_H
+
+struct stv0991_creg {
+	u32 version;		/* offset 0x0 */
+	u32 hdpctl;		/* offset 0x4 */
+	u32 hdpval;		/* offset 0x8 */
+	u32 hdpgposet;		/* offset 0xc */
+	u32 hdpgpoclr;		/* offset 0x10 */
+	u32 hdpgpoval;		/* offset 0x14 */
+	u32 stm_mux;		/* offset 0x18 */
+	u32 sysctrl_1;		/* offset 0x1c */
+	u32 sysctrl_2;		/* offset 0x20 */
+	u32 sysctrl_3;		/* offset 0x24 */
+	u32 sysctrl_4;		/* offset 0x28 */
+	u32 reserved_1[0x35];	/* offset 0x2C-0xFC */
+	u32 mux1;		/* offset 0x100 */
+	u32 mux2;		/* offset 0x104 */
+	u32 mux3;		/* offset 0x108 */
+	u32 mux4;		/* offset 0x10c */
+	u32 mux5;		/* offset 0x110 */
+	u32 mux6;		/* offset 0x114 */
+	u32 mux7;		/* offset 0x118 */
+	u32 mux8;		/* offset 0x11c */
+	u32 mux9;		/* offset 0x120 */
+	u32 mux10;		/* offset 0x124 */
+	u32 mux11;		/* offset 0x128 */
+	u32 mux12;		/* offset 0x12c */
+	u32 mux13;		/* offset 0x130 */
+	u32 reserved_2[0x33];	/* offset 0x134-0x1FC */
+	u32 cfg_pad1;		/* offset 0x200 */
+	u32 cfg_pad2;		/* offset 0x204 */
+	u32 cfg_pad3;		/* offset 0x208 */
+	u32 cfg_pad4;		/* offset 0x20c */
+	u32 cfg_pad5;		/* offset 0x210 */
+	u32 cfg_pad6;		/* offset 0x214 */
+	u32 cfg_pad7;		/* offset 0x218 */
+	u32 reserved_3[0x39];	/* offset 0x21C-0x2FC */
+	u32 vdd_pad1;		/* offset 0x300 */
+	u32 vdd_pad2;		/* offset 0x304 */
+	u32 reserved_4[0x3e];	/* offset 0x308-0x3FC */
+	u32 vdd_comp1;		/* offset 0x400 */
+};
+
+/* CREG MUX 12 register */
+#define GPIOC_30_MUX_SHIFT	24
+#define GPIOC_30_MUX_MASK	~(1 << GPIOC_30_MUX_SHIFT)
+#define CFG_GPIOC_30_UART_TX	(1 << GPIOC_30_MUX_SHIFT)
+
+#define GPIOC_31_MUX_SHIFT	28
+#define GPIOC_31_MUX_MASK	~(1 << GPIOC_31_MUX_SHIFT)
+#define CFG_GPIOC_31_UART_RX	(1 << GPIOC_31_MUX_SHIFT)
+
+/* CREG MUX 7 register */
+#define GPIOB_16_MUX_SHIFT	0
+#define GPIOB_16_MUX_MASK	~(1 << GPIOB_16_MUX_SHIFT)
+#define CFG_GPIOB_16_UART_TX	(1 << GPIOB_16_MUX_SHIFT)
+
+#define GPIOB_17_MUX_SHIFT	4
+#define GPIOB_17_MUX_MASK	~(1 << GPIOB_17_MUX_SHIFT)
+#define CFG_GPIOB_17_UART_RX	(1 << GPIOB_17_MUX_SHIFT)
+
+/* CREG CFG_PAD6 register */
+
+#define GPIOC_31_MODE_SHIFT	30
+#define GPIOC_31_MODE_MASK	~(1 << GPIOC_31_MODE_SHIFT)
+#define CFG_GPIOC_31_MODE_OD	(0 << GPIOC_31_MODE_SHIFT)
+#define CFG_GPIOC_31_MODE_PP	(1 << GPIOC_31_MODE_SHIFT)
+
+#define GPIOC_30_MODE_SHIFT	28
+#define GPIOC_30_MODE_MASK	~(1 << GPIOC_30_MODE_SHIFT)
+#define CFG_GPIOC_30_MODE_LOW	(0 << GPIOC_30_MODE_SHIFT)
+#define CFG_GPIOC_30_MODE_HIGH	(1 << GPIOC_30_MODE_SHIFT)
+
+#endif
diff --git a/arch/arm/include/asm/arch-stv0991/stv0991_defs.h b/arch/arm/include/asm/arch-stv0991/stv0991_defs.h
new file mode 100644
index 0000000..1151378
--- /dev/null
+++ b/arch/arm/include/asm/arch-stv0991/stv0991_defs.h
@@ -0,0 +1,16 @@
+/*
+ * (C) Copyright 2014
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __STV0991_DEFS_H__
+#define __STV0991_DEFS_H__
+#include <asm/arch/stv0991_periph.h>
+
+extern int stv0991_pinmux_config(enum periph_id);
+extern int clock_setup(enum periph_clock);
+
+#endif
+
diff --git a/arch/arm/include/asm/arch-stv0991/stv0991_gpt.h b/arch/arm/include/asm/arch-stv0991/stv0991_gpt.h
new file mode 100644
index 0000000..abd7257
--- /dev/null
+++ b/arch/arm/include/asm/arch-stv0991/stv0991_gpt.h
@@ -0,0 +1,43 @@
+/*
+ * (C) Copyright 2014
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _STV0991_GPT_H
+#define _STV0991_GPT_H
+
+#include <asm/arch-stv0991/hardware.h>
+
+struct gpt_regs {
+	u32 cr1;
+	u32 cr2;
+	u32 reserved_1;
+	u32 dier;	/* dma_int_en */
+	u32 sr;		/* status reg */
+	u32 egr;	/* event gen */
+	u32 reserved_2[3];	/* offset 0x18--0x20*/
+	u32 cnt;
+	u32 psc;
+	u32 arr;
+};
+
+struct gpt_regs *const gpt1_regs_ptr =
+	(struct gpt_regs *) GPTIMER1_BASE_ADDR;
+
+/* Timer control1 register  */
+#define GPT_CR1_CEN			0x0001
+#define GPT_MODE_AUTO_RELOAD		(1 << 7)
+
+/* Timer prescalar reg */
+#define GPT_PRESCALER_128		0x128
+
+/* Auto reload register for free running config */
+#define GPT_FREE_RUNNING		0xFFFF
+
+/* Timer, HZ specific defines */
+#define CONFIG_STV0991_HZ		1000
+#define CONFIG_STV0991_HZ_CLOCK		(27*1000*1000)/GPT_PRESCALER_128
+
+#endif
diff --git a/arch/arm/include/asm/arch-stv0991/stv0991_periph.h b/arch/arm/include/asm/arch-stv0991/stv0991_periph.h
new file mode 100644
index 0000000..f723771
--- /dev/null
+++ b/arch/arm/include/asm/arch-stv0991/stv0991_periph.h
@@ -0,0 +1,43 @@
+/*
+ * (C) Copyright 2014
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __ASM_ARM_ARCH_PERIPH_H
+#define __ASM_ARM_ARCH_PERIPH_H
+
+/*
+ * Peripherals required for pinmux configuration. List will
+ * grow with support for more devices getting added.
+ * Numbering based on interrupt table.
+ *
+ */
+enum periph_id {
+	UART_GPIOC_30_31 = 0,
+	UART_GPIOB_16_17,
+	PERIPH_ID_I2C0,
+	PERIPH_ID_I2C1,
+	PERIPH_ID_I2C2,
+	PERIPH_ID_I2C3,
+	PERIPH_ID_I2C4,
+	PERIPH_ID_I2C5,
+	PERIPH_ID_I2C6,
+	PERIPH_ID_I2C7,
+	PERIPH_ID_SPI0,
+	PERIPH_ID_SPI1,
+	PERIPH_ID_SPI2,
+	PERIPH_ID_SDMMC0,
+	PERIPH_ID_SDMMC1,
+	PERIPH_ID_SDMMC2,
+	PERIPH_ID_SDMMC3,
+	PERIPH_ID_I2S1,
+};
+
+enum periph_clock {
+	UART_CLOCK_CFG = 0,
+	ETH_CLOCK_CFG,
+};
+
+#endif /* __ASM_ARM_ARCH_PERIPH_H */
diff --git a/arch/arm/include/asm/arch-stv0991/stv0991_wdru.h b/arch/arm/include/asm/arch-stv0991/stv0991_wdru.h
new file mode 100644
index 0000000..7e555a2
--- /dev/null
+++ b/arch/arm/include/asm/arch-stv0991/stv0991_wdru.h
@@ -0,0 +1,28 @@
+/*
+ * (C) Copyright 2014
+ * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _STV0991_WD_RST_H
+#define _STV0991_WD_RST_H
+#include <asm/arch-stv0991/hardware.h>
+
+struct stv0991_wd_ru {
+	u32 wdru_config;
+	u32 wdru_ctrl1;
+	u32 wdru_ctrl2;
+	u32 wdru_tim;
+	u32 wdru_count;
+	u32 wdru_stat;
+	u32 wdru_wrlock;
+};
+
+struct stv0991_wd_ru *const stv0991_wd_ru_ptr = \
+		(struct stv0991_wd_ru *)WDRU_BASE_ADDR;
+
+/* Watchdog control register */
+#define WDRU_RST_SYS		0x1
+
+#endif