Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / arm / cpu / armv7 / u8500 / clock.c

diff --git a/qemu/roms/u-boot/arch/arm/cpu/armv7/u8500/clock.c b/qemu/roms/u-boot/arch/arm/cpu/armv7/u8500/clock.c
new file mode 100644 (file)
index 0000000..1e3b3d5
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/armv7/u8500/clock.c
@@ -0,0 +1,74 @@
+/*
+ * (C) Copyright 2009 ST-Ericsson
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/hardware.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct clkrst {
+       unsigned int pcken;
+       unsigned int pckdis;
+       unsigned int kcken;
+       unsigned int kckdis;
+};
+
+static unsigned int clkrst_base[] = {
+       U8500_CLKRST1_BASE,
+       U8500_CLKRST2_BASE,
+       U8500_CLKRST3_BASE,
+       0,
+       U8500_CLKRST5_BASE,
+       U8500_CLKRST6_BASE,
+       U8500_CLKRST7_BASE,     /* ED only */
+};
+
+/* Turn on peripheral clock at PRCC level */
+void u8500_clock_enable(int periph, int cluster, int kern)
+{
+       struct clkrst *clkrst = (struct clkrst *) clkrst_base[periph - 1];
+
+       if (kern != -1)
+               writel(1 << kern, &clkrst->kcken);
+
+       if (cluster != -1)
+               writel(1 << cluster, &clkrst->pcken);
+}
+
+void db8500_clocks_init(void)
+{
+       /*
+        * Enable all clocks. This is u-boot, we can enable it all. There is no
+        * powersave in u-boot.
+        */
+
+       u8500_clock_enable(1, 9, -1); /* GPIO0 */
+       u8500_clock_enable(2, 11, -1);/* GPIO1 */
+       u8500_clock_enable(3, 8, -1); /* GPIO2 */
+       u8500_clock_enable(5, 1, -1); /* GPIO3 */
+       u8500_clock_enable(3, 6, 6);  /* UART2 */
+       u8500_clock_enable(3, 3, 3);  /* I2C0 */
+       u8500_clock_enable(1, 5, 5);  /* SDI0 */
+       u8500_clock_enable(2, 4, 2);  /* SDI4 */
+       u8500_clock_enable(6, 6, -1); /* MTU0 */
+       u8500_clock_enable(3, 4, 4);  /* SDI2 */
+
+       /*
+        * Enabling clocks for all devices which are AMBA devices in the
+        * kernel.  Otherwise they will not get probe()'d because the
+        * peripheral ID register will not be powered.
+        */
+
+       /* XXX: some of these differ between ED/V1 */
+
+       u8500_clock_enable(1, 1, 1);  /* UART1 */
+       u8500_clock_enable(1, 0, 0);  /* UART0 */
+       u8500_clock_enable(3, 2, 2);  /* SSP1 */
+       u8500_clock_enable(3, 1, 1);  /* SSP0 */
+       u8500_clock_enable(2, 8, -1); /* SPI0 */
+       u8500_clock_enable(2, 5, 3);  /* MSP2 */
+}