Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / arm / cpu / arm920t / imx / generic.c

diff --git a/qemu/roms/u-boot/arch/arm/cpu/arm920t/imx/generic.c b/qemu/roms/u-boot/arch/arm/cpu/arm920t/imx/generic.c
new file mode 100644 (file)
index 0000000..1441ab4
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/arm920t/imx/generic.c
@@ -0,0 +1,77 @@
+/*
+ *  arch/arm/mach-imx/generic.c
+ *
+ *  author: Sascha Hauer
+ *  Created: april 20th, 2004
+ *  Copyright: Synertronixx GmbH
+ *
+ *  Common code for i.MX machines
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_IMX
+
+#include <asm/arch/imx-regs.h>
+
+void imx_gpio_mode(int gpio_mode)
+{
+       unsigned int pin = gpio_mode & GPIO_PIN_MASK;
+       unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> 5;
+       unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> 10;
+       unsigned int tmp;
+
+       /* Pullup enable */
+       if(gpio_mode & GPIO_PUEN)
+               PUEN(port) |= (1<<pin);
+       else
+               PUEN(port) &= ~(1<<pin);
+
+       /* Data direction */
+       if(gpio_mode & GPIO_OUT)
+               DDIR(port) |= 1<<pin;
+       else
+               DDIR(port) &= ~(1<<pin);
+
+       /* Primary / alternate function */
+       if(gpio_mode & GPIO_AF)
+               GPR(port) |= (1<<pin);
+       else
+               GPR(port) &= ~(1<<pin);
+
+       /* use as gpio? */
+       if( ocr == 3 )
+               GIUS(port) |= (1<<pin);
+       else
+               GIUS(port) &= ~(1<<pin);
+
+       /* Output / input configuration */
+       /* FIXME: I'm not very sure about OCR and ICONF, someone
+        * should have a look over it
+        */
+       if(pin<16) {
+               tmp = OCR1(port);
+               tmp &= ~( 3<<(pin*2));
+               tmp |= (ocr << (pin*2));
+               OCR1(port) = tmp;
+
+               if( gpio_mode & GPIO_AOUT )
+                       ICONFA1(port) &= ~( 3<<(pin*2));
+               if( gpio_mode & GPIO_BOUT )
+                       ICONFB1(port) &= ~( 3<<(pin*2));
+       } else {
+               tmp = OCR2(port);
+               tmp &= ~( 3<<((pin-16)*2));
+               tmp |= (ocr << ((pin-16)*2));
+               OCR2(port) = tmp;
+
+               if( gpio_mode & GPIO_AOUT )
+                       ICONFA2(port) &= ~( 3<<((pin-16)*2));
+               if( gpio_mode & GPIO_BOUT )
+                       ICONFB2(port) &= ~( 3<<((pin-16)*2));
+       }
+}
+
+#endif /* CONFIG_IMX */