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From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 13/22] ARM: am33xx: implement cpu revision decoding
Date: Mon, 26 Aug 2013 08:55:54 +0200	[thread overview]
Message-ID: <1377500163-28962-14-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1377500163-28962-1-git-send-email-s.hauer@pengutronix.de>

From: Jan Luebbe <jlu@pengutronix.de>

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/mach-omap/am33xx_generic.c              | 34 +++++++++++++++++++++++-
 arch/arm/mach-omap/include/mach/am33xx-generic.h |  2 ++
 arch/arm/mach-omap/include/mach/am33xx-silicon.h |  1 +
 arch/arm/mach-omap/include/mach/sys_info.h       | 10 +++++--
 4 files changed, 44 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-omap/am33xx_generic.c b/arch/arm/mach-omap/am33xx_generic.c
index 67e4a45..3690ce1 100644
--- a/arch/arm/mach-omap/am33xx_generic.c
+++ b/arch/arm/mach-omap/am33xx_generic.c
@@ -1,6 +1,6 @@
 /*
  * (C) Copyright 2012 Teresa Gámez, Phytec Messtechnik GmbH
- * (C) Copyright 2012 Jan Luebbe <j.luebbe@pengutronix.de>
+ * (C) Copyright 2012-2013 Jan Luebbe <j.luebbe@pengutronix.de>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
@@ -38,6 +38,38 @@ void __noreturn reset_cpu(unsigned long addr)
 }
 
 /**
+ * @brief Extract the AM33xx ES revision
+ *
+ * The significance of the CPU revision depends upon the cpu type.
+ * Latest known revision is considered default.
+ *
+ * @return silicon version
+ */
+u32 am33xx_get_cpu_rev(void)
+{
+	u32 version, retval;
+
+	version = (readl(AM33XX_IDCODE_REG) >> 28) & 0xF;
+
+	switch (version) {
+	case 0:
+		retval = AM335X_ES1_0;
+		break;
+	case 1:
+		retval = AM335X_ES2_0;
+		break;
+	case 2:
+		/*
+		 * Fall through the default case.
+		 */
+	default:
+		retval = AM335X_ES2_1;
+	}
+
+	return retval;
+}
+
+/**
  * @brief Get the upper address of current execution
  *
  * we can use this to figure out if we are running in SRAM /
diff --git a/arch/arm/mach-omap/include/mach/am33xx-generic.h b/arch/arm/mach-omap/include/mach/am33xx-generic.h
index d9d2efb..ec22ad2 100644
--- a/arch/arm/mach-omap/include/mach/am33xx-generic.h
+++ b/arch/arm/mach-omap/include/mach/am33xx-generic.h
@@ -6,6 +6,8 @@
 
 int am33xx_register_ethaddr(int eth_id, int mac_id);
 
+u32 am33xx_get_cpu_rev(void);
+
 static inline void am33xx_save_bootinfo(uint32_t *info)
 {
 	unsigned long i = (unsigned long)info;
diff --git a/arch/arm/mach-omap/include/mach/am33xx-silicon.h b/arch/arm/mach-omap/include/mach/am33xx-silicon.h
index e349c4d..30b605a 100644
--- a/arch/arm/mach-omap/include/mach/am33xx-silicon.h
+++ b/arch/arm/mach-omap/include/mach/am33xx-silicon.h
@@ -71,6 +71,7 @@
 
 /* CTRL */
 #define AM33XX_CTRL_BASE		(AM33XX_L4_WKUP_BASE + 0x210000)
+#define AM33XX_IDCODE_REG		(AM33XX_CTRL_BASE + 0x600)
 
 /* Watchdog Timer */
 #define AM33XX_WDT_BASE			0x44E35000
diff --git a/arch/arm/mach-omap/include/mach/sys_info.h b/arch/arm/mach-omap/include/mach/sys_info.h
index 4d9b138..fce5895 100644
--- a/arch/arm/mach-omap/include/mach/sys_info.h
+++ b/arch/arm/mach-omap/include/mach/sys_info.h
@@ -40,6 +40,7 @@
 #define CPU_1710	0x1710
 #define CPU_2420	0x2420
 #define CPU_2430	0x2430
+#define CPU_3350	0x3350
 #define CPU_3430	0x3430
 #define CPU_3630	0x3630
 
@@ -54,6 +55,10 @@
 #define OMAP34XX_ES3		cpu_revision(CPU_3430, 3)
 #define OMAP34XX_ES3_1		cpu_revision(CPU_3430, 4)
 
+#define AM335X_ES1_0		cpu_revision(CPU_3350, 0)
+#define AM335X_ES2_0		cpu_revision(CPU_3350, 1)
+#define AM335X_ES2_1		cpu_revision(CPU_3350, 2)
+
 #define OMAP36XX_ES1		cpu_revision(CPU_3630, 0)
 #define OMAP36XX_ES1_1		cpu_revision(CPU_3630, 1)
 #define OMAP36XX_ES1_2		cpu_revision(CPU_3630, 2)
@@ -76,8 +81,9 @@
 /**
  * Hawkeye definitions to identify silicon families
  */
-#define OMAP_HAWKEYE_34XX	0xB7AE
-#define OMAP_HAWKEYE_36XX	0xB891
+#define OMAP_HAWKEYE_34XX	0xB7AE /* OMAP34xx */
+#define OMAP_HAWKEYE_36XX	0xB891 /* OMAP36xx */
+#define OMAP_HAWKEYE_335X	0xB944 /* AM335x */
 
 /** These are implemented by the System specific code in omapX-generic.c */
 u32 get_cpu_type(void);
-- 
1.8.4.rc3


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  parent reply	other threads:[~2013-08-26  6:56 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-26  6:55 [PATCH] am33xx beaglebone and related Sascha Hauer
2013-08-26  6:55 ` [PATCH 01/22] console: fix console without CONFIG_PARAMETER Sascha Hauer
2013-08-26  6:55 ` [PATCH 02/22] mci: omap: advertise 8 bit support Sascha Hauer
2013-08-26  6:55 ` [PATCH 03/22] mci: omap: implement device detect callback Sascha Hauer
2013-08-26  6:55 ` [PATCH 04/22] mci: omap: Allow to set mmc devname via platformdata Sascha Hauer
2013-08-26  6:55 ` [PATCH 05/22] ARM: omap: Allow to set mmc devname used for booting Sascha Hauer
2013-08-26  6:55 ` [PATCH 06/22] ARM: omap: fix omap_save_bootinfo Sascha Hauer
2013-08-26 12:00   ` Teresa Gamez
2013-08-26  6:55 ` [PATCH 07/22] ARM: omap: rename INIT_LL to omap_uart_lowlevel_init Sascha Hauer
2013-08-26  6:55 ` [PATCH 08/22] ARM: am33xx: Cleanup of lowlevel code Sascha Hauer
2013-08-26  6:55 ` [PATCH 09/22] ARM: pcm051: Clean up " Sascha Hauer
2013-08-26  6:55 ` [PATCH 10/22] ARM: beaglebone: " Sascha Hauer
2013-08-26  6:55 ` [PATCH 11/22] ARM: am33xx: set bootsource instance correctly for MMC1 Sascha Hauer
2013-08-26  6:55 ` [PATCH 12/22] ARM: cpuinfo: display the core name and version Sascha Hauer
2013-08-26  6:55 ` Sascha Hauer [this message]
2013-08-26  6:55 ` [PATCH 14/22] ARM: am33xx: beaglebone: configure I2C EEPROM Sascha Hauer
2013-08-26  6:55 ` [PATCH 15/22] ARM: am33xx: Add mmc1 registration helper Sascha Hauer
2013-08-26  6:55 ` [PATCH 16/22] ARM: am33xx: make DDR PLL frequency configurable Sascha Hauer
2013-08-26  6:55 ` [PATCH 17/22] rework debug_ll Sascha Hauer
2013-08-26  6:55 ` [PATCH 18/22] ARM: beaglebone: Initialize UART for lowlevel debugging Sascha Hauer
2013-08-26  6:56 ` [PATCH 19/22] ARM: beaglebone: add support for beaglebone black with DDR3 RAM Sascha Hauer
2013-08-26  6:56 ` [PATCH 20/22] ARM: beaglebone: register sd/emmc with persistent name Sascha Hauer
2013-08-26  6:56 ` [PATCH 21/22] ARM: beaglebone: update mlo_small defconfig Sascha Hauer
2013-08-26  6:56 ` [PATCH 22/22] ARM: beaglebone: update defconfig Sascha Hauer

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