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-rw-r--r--arch/m68k/coldfire/m528x.c143
1 files changed, 143 insertions, 0 deletions
diff --git a/arch/m68k/coldfire/m528x.c b/arch/m68k/coldfire/m528x.c
new file mode 100644
index 000000000..51a6a6236
--- /dev/null
+++ b/arch/m68k/coldfire/m528x.c
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0
+/***************************************************************************/
+
+/*
+ * m528x.c -- platform support for ColdFire 528x based boards
+ *
+ * Sub-architcture dependent initialization code for the Freescale
+ * 5280, 5281 and 5282 CPUs.
+ *
+ * Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com)
+ * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
+ */
+
+/***************************************************************************/
+
+#include <linux/clkdev.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <asm/machdep.h>
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/mcfuart.h>
+#include <asm/mcfclk.h>
+
+/***************************************************************************/
+
+DEFINE_CLK(pll, "pll.0", MCF_CLK);
+DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
+
+static struct clk_lookup m528x_clk_lookup[] = {
+ CLKDEV_INIT(NULL, "pll.0", &clk_pll),
+ CLKDEV_INIT(NULL, "sys.0", &clk_sys),
+ CLKDEV_INIT("mcfpit.0", NULL, &clk_pll),
+ CLKDEV_INIT("mcfpit.1", NULL, &clk_pll),
+ CLKDEV_INIT("mcfpit.2", NULL, &clk_pll),
+ CLKDEV_INIT("mcfpit.3", NULL, &clk_pll),
+ CLKDEV_INIT("mcfuart.0", NULL, &clk_sys),
+ CLKDEV_INIT("mcfuart.1", NULL, &clk_sys),
+ CLKDEV_INIT("mcfuart.2", NULL, &clk_sys),
+ CLKDEV_INIT("mcfqspi.0", NULL, &clk_sys),
+ CLKDEV_INIT("fec.0", NULL, &clk_sys),
+ CLKDEV_INIT("imx1-i2c.0", NULL, &clk_sys),
+};
+
+/***************************************************************************/
+
+static void __init m528x_qspi_init(void)
+{
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
+ /* setup Port QS for QSPI with gpio CS control */
+ __raw_writeb(0x07, MCFGPIO_PQSPAR);
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
+}
+
+/***************************************************************************/
+
+static void __init m528x_i2c_init(void)
+{
+#if IS_ENABLED(CONFIG_I2C_IMX)
+ u16 paspar;
+
+ /* setup Port AS Pin Assignment Register for I2C */
+ /* set PASPA0 to SCL and PASPA1 to SDA */
+ paspar = readw(MCFGPIO_PASPAR);
+ paspar |= 0xF;
+ writew(paspar, MCFGPIO_PASPAR);
+#endif /* IS_ENABLED(CONFIG_I2C_IMX) */
+}
+
+/***************************************************************************/
+
+static void __init m528x_uarts_init(void)
+{
+ u8 port;
+
+ /* make sure PUAPAR is set for UART0 and UART1 */
+ port = readb(MCFGPIO_PUAPAR);
+ port |= 0x03 | (0x03 << 2);
+ writeb(port, MCFGPIO_PUAPAR);
+}
+
+/***************************************************************************/
+
+static void __init m528x_fec_init(void)
+{
+ u16 v16;
+
+ /* Set multi-function pins to ethernet mode for fec0 */
+ v16 = readw(MCFGPIO_PASPAR);
+ writew(v16 | 0xf00, MCFGPIO_PASPAR);
+ writeb(0xc0, MCFGPIO_PEHLPAR);
+}
+
+/***************************************************************************/
+
+#ifdef CONFIG_WILDFIRE
+void wildfire_halt(void)
+{
+ writeb(0, 0x30000007);
+ writeb(0x2, 0x30000007);
+}
+#endif
+
+#ifdef CONFIG_WILDFIREMOD
+void wildfiremod_halt(void)
+{
+ printk(KERN_INFO "WildFireMod hibernating...\n");
+
+ /* Set portE.5 to Digital IO */
+ writew(readw(MCFGPIO_PEPAR) & ~(1 << (5 * 2)), MCFGPIO_PEPAR);
+
+ /* Make portE.5 an output */
+ writeb(readb(MCFGPIO_PDDR_E) | (1 << 5), MCFGPIO_PDDR_E);
+
+ /* Now toggle portE.5 from low to high */
+ writeb(readb(MCFGPIO_PODR_E) & ~(1 << 5), MCFGPIO_PODR_E);
+ writeb(readb(MCFGPIO_PODR_E) | (1 << 5), MCFGPIO_PODR_E);
+
+ printk(KERN_EMERG "Failed to hibernate. Halting!\n");
+}
+#endif
+
+void __init config_BSP(char *commandp, int size)
+{
+#ifdef CONFIG_WILDFIRE
+ mach_halt = wildfire_halt;
+#endif
+#ifdef CONFIG_WILDFIREMOD
+ mach_halt = wildfiremod_halt;
+#endif
+ mach_sched_init = hw_timer_init;
+ m528x_uarts_init();
+ m528x_fec_init();
+ m528x_qspi_init();
+ m528x_i2c_init();
+
+ clkdev_add_table(m528x_clk_lookup, ARRAY_SIZE(m528x_clk_lookup));
+}
+
+/***************************************************************************/