From: SRICHARAN R <r.sricharan@ti.com>
Date: Mon, 12 Mar 2012 02:25:43 +0000 (+0000)
Subject: OMAP4/5: device: Add support to get the device type.
X-Git-Tag: v2012.07-rc1~144^2~146
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=c1fa3c37af7b99ba80f232a84f6b84e90f481f06;p=oweals%2Fu-boot.git

OMAP4/5: device: Add support to get the device type.

Add support to identify the device as GP/EMU/HS.

Signed-off-by: R Sricharan <r.sricharan@ti.com>
---

diff --git a/arch/arm/cpu/armv7/omap-common/hwinit-common.c b/arch/arm/cpu/armv7/omap-common/hwinit-common.c
index ab46bff5af..10e7669805 100644
--- a/arch/arm/cpu/armv7/omap-common/hwinit-common.c
+++ b/arch/arm/cpu/armv7/omap-common/hwinit-common.c
@@ -217,7 +217,11 @@ int arch_cpu_init(void)
  */
 u32 get_device_type(void)
 {
-	return 0;
+	struct omap_sys_ctrl_regs *ctrl =
+		      (struct omap_sys_ctrl_regs *) SYSCTRL_GENERAL_CORE_BASE;
+
+	return (readl(&ctrl->control_status) &
+				      (DEVICE_TYPE_MASK)) >> DEVICE_TYPE_SHIFT;
 }
 
 /*
diff --git a/arch/arm/include/asm/arch-omap4/omap.h b/arch/arm/include/asm/arch-omap4/omap.h
index 5fd692fe13..3a39787298 100644
--- a/arch/arm/include/asm/arch-omap4/omap.h
+++ b/arch/arm/include/asm/arch-omap4/omap.h
@@ -139,6 +139,10 @@ struct s32ktimer {
 	unsigned int s32k_cr;	/* 0x10 */
 };
 
+#define DEVICE_TYPE_SHIFT (0x8)
+#define DEVICE_TYPE_MASK (0x7 << DEVICE_TYPE_SHIFT)
+#define DEVICE_GP 0x3
+
 struct omap_sys_ctrl_regs {
 	unsigned int pad1[129];
 	unsigned int control_id_code;			/* 0x4A002204 */
diff --git a/arch/arm/include/asm/arch-omap5/omap.h b/arch/arm/include/asm/arch-omap5/omap.h
index 7e17c76166..2725392969 100644
--- a/arch/arm/include/asm/arch-omap5/omap.h
+++ b/arch/arm/include/asm/arch-omap5/omap.h
@@ -136,6 +136,10 @@ struct s32ktimer {
 	unsigned int s32k_cr;	/* 0x10 */
 };
 
+#define DEVICE_TYPE_SHIFT 0x6
+#define DEVICE_TYPE_MASK (0x7 << DEVICE_TYPE_SHIFT)
+#define DEVICE_GP 0x3
+
 struct omap_sys_ctrl_regs {
 	u32 pad0[77]; /* 0x4A002000 */
 	u32 control_status; /* 0x4A002134 */