path: root/patches/barebox-2012.11.0/0001-ARM-OMAP-AM33XX-create-new-ARCH-for-AM33xx.patch

From 161fca94672753b076779ffb19ab3b6db17fd82c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Teresa=20G=C3=A1mez?= <t.gamez@phytec.de>
Date: Thu, 20 Sep 2012 16:02:03 +0200
Subject: [PATCH] ARM OMAP AM33XX: create new ARCH for AM33xx
MIME-Version: 1.0
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Created ARCH for AM33xx boards as second stage bootloader.
This includes:
- Added dmtimer0
- Created basic header files
- Added MMC support for ARCH_AM33XX
- Added reset function

Signed-off-by: Teresa Gámez <t.gamez@phytec.de>
---
 arch/arm/mach-omap/Kconfig                       |   11 ++++
 arch/arm/mach-omap/Makefile                      |    2 +
 arch/arm/mach-omap/am33xx_generic.c              |   29 +++++++++
 arch/arm/mach-omap/dmtimer0.c                    |   72 ++++++++++++++++++++++
 arch/arm/mach-omap/gpio.c                        |   31 ++++++++++
 arch/arm/mach-omap/include/mach/am33xx-clock.h   |   25 ++++++++
 arch/arm/mach-omap/include/mach/am33xx-silicon.h |   51 +++++++++++++++
 arch/arm/mach-omap/include/mach/clocks.h         |    7 +++
 arch/arm/mach-omap/include/mach/omap3-clock.h    |    3 -
 arch/arm/mach-omap/include/mach/silicon.h        |    3 +
 arch/arm/mach-omap/include/mach/timers.h         |   22 +++++++
 drivers/mci/Kconfig                              |    2 +-
 12 files changed, 254 insertions(+), 4 deletions(-)
 create mode 100644 arch/arm/mach-omap/am33xx_generic.c
 create mode 100644 arch/arm/mach-omap/dmtimer0.c
 create mode 100644 arch/arm/mach-omap/include/mach/am33xx-clock.h
 create mode 100644 arch/arm/mach-omap/include/mach/am33xx-silicon.h

diff --git a/arch/arm/mach-omap/Kconfig b/arch/arm/mach-omap/Kconfig
index aa31633..7e7e855 100644
--- a/arch/arm/mach-omap/Kconfig
+++ b/arch/arm/mach-omap/Kconfig
@@ -42,12 +42,23 @@ config ARCH_OMAP4
 	help
 	  Say Y here if you are using Texas Instrument's OMAP4 based platform
 
+config ARCH_AM33XX
+	bool "AM33xx"
+	select CPU_V7
+	select GENERIC_GPIO
+	select OMAP_CLOCK_SOURCE_DMTIMER0
+	help
+	  Say Y here if you are using Texas Instrument's AM33xx based platform
+
 endchoice
 
 # Blind enable all possible clocks.. think twice before you do this.
 config OMAP_CLOCK_SOURCE_S32K
 	bool
 
+config OMAP_CLOCK_SOURCE_DMTIMER0
+	bool
+
 config OMAP3_CLOCK_CONFIG
 	prompt "Clock Configuration"
 	bool
diff --git a/arch/arm/mach-omap/Makefile b/arch/arm/mach-omap/Makefile
index 3a6d50c..1e1a421 100644
--- a/arch/arm/mach-omap/Makefile
+++ b/arch/arm/mach-omap/Makefile
@@ -18,10 +18,12 @@
 obj-$(CONFIG_ARCH_OMAP) += syslib.o
 pbl-$(CONFIG_ARCH_OMAP) += syslib.o
 obj-$(CONFIG_OMAP_CLOCK_SOURCE_S32K) += s32k_clksource.o
+obj-$(CONFIG_OMAP_CLOCK_SOURCE_DMTIMER0) += dmtimer0.o
 obj-$(CONFIG_ARCH_OMAP3) += omap3_core.o omap3_generic.o auxcr.o
 pbl-$(CONFIG_ARCH_OMAP3) += omap3_core.o omap3_generic.o auxcr.o
 obj-$(CONFIG_ARCH_OMAP4) += omap4_generic.o omap4_clock.o
 pbl-$(CONFIG_ARCH_OMAP4) += omap4_generic.o omap4_clock.o
+obj-$(CONFIG_ARCH_AM33XX) += am33xx_generic.o
 obj-$(CONFIG_OMAP3_CLOCK_CONFIG) += omap3_clock.o
 pbl-$(CONFIG_OMAP3_CLOCK_CONFIG) += omap3_clock.o
 obj-$(CONFIG_OMAP_GPMC) += gpmc.o devices-gpmc-nand.o
diff --git a/arch/arm/mach-omap/am33xx_generic.c b/arch/arm/mach-omap/am33xx_generic.c
new file mode 100644
index 0000000..ba08773
--- /dev/null
+++ b/arch/arm/mach-omap/am33xx_generic.c
@@ -0,0 +1,29 @@
+/*
+ * (C) Copyright 2012 Teresa Gámez, Phytec Messtechnik GmbH
+ *
+ * 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
+ */
+
+#include <io.h>
+#include <mach/silicon.h>
+#include <mach/clocks.h>
+
+void __noreturn reset_cpu(unsigned long addr)
+{
+	writel(PRM_RSTCTRL_RESET, PRM_REG(RSTCTRL));
+
+	while (1);
+}
diff --git a/arch/arm/mach-omap/dmtimer0.c b/arch/arm/mach-omap/dmtimer0.c
new file mode 100644
index 0000000..b8ec43f
--- /dev/null
+++ b/arch/arm/mach-omap/dmtimer0.c
@@ -0,0 +1,72 @@
+/**
+ * @file
+ * @brief Support DMTimer0 counter
+ *
+ * FileName: arch/arm/mach-omap/dmtimer0.c
+ */
+/*
+ * This File is based on arch/arm/mach-omap/s32k_clksource.c
+ * (C) Copyright 2008
+ * Texas Instruments, <www.ti.com>
+ * Nishanth Menon <x0nishan@ti.com>
+ *
+ * (C) Copyright 2012 Teresa Gámez, Phytec Messtechnik GmbH
+ *
+ * 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
+ */
+
+#include <clock.h>
+#include <init.h>
+#include <io.h>
+#include <mach/silicon.h>
+#include <mach/timers.h>
+
+#define CLK_RC32K	32768
+
+/**
+ * @brief Provide a simple counter read
+ *
+ * @return DMTimer0 counter
+ */
+static uint64_t dmtimer0_read(void)
+{
+	return readl(AM33XX_DMTIMER0_BASE + TCRR);
+}
+
+static struct clocksource dmtimer0_cs = {
+	.read	= dmtimer0_read,
+	.mask	= CLOCKSOURCE_MASK(32),
+	.shift	= 10,
+};
+
+/**
+ * @brief Initialize the Clock
+ *
+ * Enable dmtimer0.
+ *
+ * @return result of @ref init_clock
+ */
+static int dmtimer0_init(void)
+{
+	dmtimer0_cs.mult = clocksource_hz2mult(CLK_RC32K, dmtimer0_cs.shift);
+	/* Enable counter */
+	writel(0x3, AM33XX_DMTIMER0_BASE + TCLR);
+
+	return init_clock(&dmtimer0_cs);
+}
+
+/* Run me at boot time */
+core_initcall(dmtimer0_init);
diff --git a/arch/arm/mach-omap/gpio.c b/arch/arm/mach-omap/gpio.c
index 49ffbda..8a9eeed 100644
--- a/arch/arm/mach-omap/gpio.c
+++ b/arch/arm/mach-omap/gpio.c
@@ -48,6 +48,37 @@ struct omap_gpio_chip {
 	struct gpio_chip chip;
 };
 
+#ifdef CONFIG_ARCH_OMAP3
+static void __iomem *gpio_bank[] = {
+	(void *)0x48310000,
+	(void *)0x49050000,
+	(void *)0x49052000,
+	(void *)0x49054000,
+	(void *)0x49056000,
+	(void *)0x49058000,
+};
+#endif
+
+#ifdef CONFIG_ARCH_OMAP4
+static void __iomem *gpio_bank[] = {
+	(void *)0x4a310100,
+	(void *)0x48055100,
+	(void *)0x48057100,
+	(void *)0x48059100,
+	(void *)0x4805b100,
+	(void *)0x4805d100,
+};
+#endif
+
+#ifdef CONFIG_ARCH_AM33XX
+static void __iomem *gpio_bank[] = {
+	(void *)0x44e07100,
+	(void *)0x4804c100,
+	(void *)0x481ac100,
+	(void *)0x481ae100,
+};
+#endif
+
 static inline int omap_get_gpio_index(int gpio)
 {
 	return gpio & 0x1f;
diff --git a/arch/arm/mach-omap/include/mach/am33xx-clock.h b/arch/arm/mach-omap/include/mach/am33xx-clock.h
new file mode 100644
index 0000000..654c104
--- /dev/null
+++ b/arch/arm/mach-omap/include/mach/am33xx-clock.h
@@ -0,0 +1,25 @@
+/*
+ * (C) Copyright 2012 Teresa Gámez, Phytec Messtechnik GmbH
+ *
+ * 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
+ */
+#ifndef _AM33XX_CLOCKS_H_
+#define _AM33XX_CLOCKS_H_
+
+/** PRM Clock Regs */
+#define PRM_RSTCTRL		0x0f00
+
+#endif  /* endif _AM33XX_CLOCKS_H_ */
diff --git a/arch/arm/mach-omap/include/mach/am33xx-silicon.h b/arch/arm/mach-omap/include/mach/am33xx-silicon.h
new file mode 100644
index 0000000..7b13991
--- /dev/null
+++ b/arch/arm/mach-omap/include/mach/am33xx-silicon.h
@@ -0,0 +1,51 @@
+/*
+ * This file contains the address info for various AM33XX modules.
+ *
+ * Copyright (C) 2012 Teresa Gámez <t.gamez@phytec.de>,
+ *		 Phytec Messtechnik GmbH
+ *
+ * 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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __ASM_ARCH_AM33XX_H
+#define __ASM_ARCH_AM33XX_H
+
+/** AM335x Internal Bus Base addresses */
+#define AM33XX_L4_WKUP_BASE		0x44C00000
+#define AM33XX_L4_PER_BASE		0x48000000
+#define AM33XX_L4_FAST_BASE		0x4A000000
+
+/* UART */
+#define AM33XX_UART0_BASE		(AM33XX_L4_WKUP_BASE + 0x209000)
+#define AM33XX_UART1_BASE		(AM33XX_L4_PER_BASE + 0x22000)
+#define AM33XX_UART2_BASE		(AM33XX_L4_PER_BASE + 0x24000)
+
+
+/* EMFI Registers */
+#define AM33XX_EMFI0_BASE		0x4C000000
+
+#define AM33XX_DRAM_ADDR_SPACE_START	0x80000000
+#define AM33XX_DRAM_ADDR_SPACE_END	0xC0000000
+
+/* GPMC */
+#define OMAP_GPMC_BASE			0x50000000
+
+/* MMC */
+#define AM33XX_MMCHS0_BASE		(AM33XX_L4_PER_BASE + 0x60000)
+
+/* DTMTimer0 */
+#define AM33XX_DMTIMER0_BASE		(AM33XX_L4_WKUP_BASE + 0x205000)
+
+/* PRM */
+#define OMAP_PRM_BASE			(AM33XX_L4_WKUP_BASE + 0x200000)
+
+#define PRM_RSTCTRL_RESET		0x1
+
+#endif
diff --git a/arch/arm/mach-omap/include/mach/clocks.h b/arch/arm/mach-omap/include/mach/clocks.h
index b2b0c99..5729b50 100644
--- a/arch/arm/mach-omap/include/mach/clocks.h
+++ b/arch/arm/mach-omap/include/mach/clocks.h
@@ -37,6 +37,9 @@
 #define S26M		26000000
 #define S38_4M		38400000
 
+#define CM_REG(REGNAME)		(OMAP_CM_BASE + CM_##REGNAME)
+#define PRM_REG(REGNAME)	(OMAP_PRM_BASE + PRM_##REGNAME)
+
 #ifdef CONFIG_ARCH_OMAP3
 #include <mach/omap3-clock.h>
 #endif
@@ -44,4 +47,8 @@
 #include <mach/omap4-clock.h>
 #endif
 
+#ifdef CONFIG_ARCH_AM33XX
+#include <mach/am33xx-clock.h>
+#endif
+
 #endif /* __OMAP_CLOCKS_H_ */
diff --git a/arch/arm/mach-omap/include/mach/omap3-clock.h b/arch/arm/mach-omap/include/mach/omap3-clock.h
index 4f5a1d1..c36489c 100644
--- a/arch/arm/mach-omap/include/mach/omap3-clock.h
+++ b/arch/arm/mach-omap/include/mach/omap3-clock.h
@@ -27,8 +27,6 @@
 #define _OMAP343X_CLOCKS_H_
 
 /** CM Clock Regs Wrapper */
-#define CM_REG(REGNAME)	(OMAP_CM_BASE + CM_##REGNAME)
-
 #define CM_FCLKEN_IVA2		0X0000
 #define CM_CLKEN_PLL_IVA2	0X0004
 #define CM_IDLEST_PLL_IVA2	0X0024
@@ -77,7 +75,6 @@
 #define CM_CLKSTCTRL_USBH	0x1448
 
 /** PRM Clock Regs */
-#define PRM_REG(REGNAME)	(OMAP_PRM_BASE + PRM_##REGNAME)
 #define PRM_CLKSEL		0x0D40
 #define PRM_RSTCTRL		0x1250
 #define PRM_CLKSRC_CTRL		0x1270
diff --git a/arch/arm/mach-omap/include/mach/silicon.h b/arch/arm/mach-omap/include/mach/silicon.h
index 5ee1931..ff30ad9 100644
--- a/arch/arm/mach-omap/include/mach/silicon.h
+++ b/arch/arm/mach-omap/include/mach/silicon.h
@@ -24,6 +24,9 @@
 #ifdef CONFIG_ARCH_OMAP4
 #include <mach/omap4-silicon.h>
 #endif
+#ifdef CONFIG_ARCH_AM33XX
+#include <mach/am33xx-silicon.h>
+#endif
 
 /* If Architecture specific init functions are present */
 #ifndef __ASSEMBLY__
diff --git a/arch/arm/mach-omap/include/mach/timers.h b/arch/arm/mach-omap/include/mach/timers.h
index e8dad9a..66f5de9 100644
--- a/arch/arm/mach-omap/include/mach/timers.h
+++ b/arch/arm/mach-omap/include/mach/timers.h
@@ -30,6 +30,7 @@
 #ifndef __ASM_ARCH_GPT_H
 #define __ASM_ARCH_GPT_H
 
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
 /** General Purpose timer regs offsets (32 bit regs) */
 #define TIDR			0x0      /* r */
 #define TIOCP_CFG		0x10     /* rw */
@@ -52,5 +53,26 @@
 /** Sync 32Khz Timer registers */
 #define S32K_CR			(OMAP_32KTIMER_BASE + 0x10)
 #define S32K_FREQUENCY		32768
+#endif
+
+#if defined(CONFIG_ARCH_AM33XX)
+#define TIDR			0x0
+#define TIOCP_CFG		0x10
+#define IRQ_EOI			0x20
+#define IRQSTATUS_RAW		0x24
+#define IRQSTATUS		0x28
+#define IRQSTATUS_SET		0x2c
+#define IRQSTATUS_CLR		0x30
+#define IRQWAKEEN		0x34
+#define TCLR			0x38
+#define TCRR			0x3C
+#define TLDR			0x40
+#define TTGR			0x44
+#define TWPS			0x48
+#define TMAR			0x4C
+#define TCAR1			0x50
+#define TSICR			0x54
+#define TCAR2			0x58
+#endif
 
 #endif /*__ASM_ARCH_GPT_H */
diff --git a/drivers/mci/Kconfig b/drivers/mci/Kconfig
index b1a678e..fb95c1e 100644
--- a/drivers/mci/Kconfig
+++ b/drivers/mci/Kconfig
@@ -67,7 +67,7 @@ config MCI_IMX_ESDHC_PIO
 
 config MCI_OMAP_HSMMC
 	bool "OMAP HSMMC"
-	depends on ARCH_OMAP4 || ARCH_OMAP3
+	depends on ARCH_OMAP4 || ARCH_OMAP3 || ARCH_AM33XX
 	help
 	  Enable this entry to add support to read and write SD cards on
 	  both OMAP3 and OMAP4 based systems.