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- // SPDX-License-Identifier: GPL-2.0
- /***************************************************************************/
- /*
- * m5272.c -- platform support for ColdFire 5272 based boards
- *
- * Copyright (C) 1999-2002, Greg Ungerer ([email protected])
- * Copyright (C) 2001-2002, SnapGear Inc. (www.snapgear.com)
- */
- /***************************************************************************/
- #include <linux/clkdev.h>
- #include <linux/kernel.h>
- #include <linux/param.h>
- #include <linux/init.h>
- #include <linux/io.h>
- #include <linux/phy.h>
- #include <linux/phy_fixed.h>
- #include <asm/machdep.h>
- #include <asm/coldfire.h>
- #include <asm/mcfsim.h>
- #include <asm/mcfuart.h>
- #include <asm/mcfclk.h>
- /***************************************************************************/
- /*
- * Some platforms need software versions of the GPIO data registers.
- */
- unsigned short ppdata;
- unsigned char ledbank = 0xff;
- /***************************************************************************/
- DEFINE_CLK(pll, "pll.0", MCF_CLK);
- DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
- static struct clk_lookup m5272_clk_lookup[] = {
- CLKDEV_INIT(NULL, "pll.0", &clk_pll),
- CLKDEV_INIT(NULL, "sys.0", &clk_sys),
- CLKDEV_INIT("mcftmr.0", NULL, &clk_sys),
- CLKDEV_INIT("mcftmr.1", NULL, &clk_sys),
- CLKDEV_INIT("mcftmr.2", NULL, &clk_sys),
- CLKDEV_INIT("mcftmr.3", NULL, &clk_sys),
- CLKDEV_INIT("mcfuart.0", NULL, &clk_sys),
- CLKDEV_INIT("mcfuart.1", NULL, &clk_sys),
- CLKDEV_INIT("mcfqspi.0", NULL, &clk_sys),
- CLKDEV_INIT("fec.0", NULL, &clk_sys),
- };
- /***************************************************************************/
- static void __init m5272_uarts_init(void)
- {
- u32 v;
- /* Enable the output lines for the serial ports */
- v = readl(MCFSIM_PBCNT);
- v = (v & ~0x000000ff) | 0x00000055;
- writel(v, MCFSIM_PBCNT);
- v = readl(MCFSIM_PDCNT);
- v = (v & ~0x000003fc) | 0x000002a8;
- writel(v, MCFSIM_PDCNT);
- }
- /***************************************************************************/
- static void m5272_cpu_reset(void)
- {
- local_irq_disable();
- /* Set watchdog to reset, and enabled */
- __raw_writew(0, MCFSIM_WIRR);
- __raw_writew(1, MCFSIM_WRRR);
- __raw_writew(0, MCFSIM_WCR);
- for (;;)
- /* wait for watchdog to timeout */;
- }
- /***************************************************************************/
- void __init config_BSP(char *commandp, int size)
- {
- #if defined (CONFIG_MOD5272)
- /* Set base of device vectors to be 64 */
- writeb(0x40, MCFSIM_PIVR);
- #endif
- #if defined(CONFIG_NETtel) || defined(CONFIG_SCALES)
- /* Copy command line from FLASH to local buffer... */
- memcpy(commandp, (char *) 0xf0004000, size);
- commandp[size-1] = 0;
- #elif defined(CONFIG_CANCam)
- /* Copy command line from FLASH to local buffer... */
- memcpy(commandp, (char *) 0xf0010000, size);
- commandp[size-1] = 0;
- #endif
- mach_reset = m5272_cpu_reset;
- mach_sched_init = hw_timer_init;
- }
- /***************************************************************************/
- /*
- * Some 5272 based boards have the FEC ethernet directly connected to
- * an ethernet switch. In this case we need to use the fixed phy type,
- * and we need to declare it early in boot.
- */
- static struct fixed_phy_status nettel_fixed_phy_status __initdata = {
- .link = 1,
- .speed = 100,
- .duplex = 0,
- };
- /***************************************************************************/
- static int __init init_BSP(void)
- {
- m5272_uarts_init();
- fixed_phy_add(PHY_POLL, 0, &nettel_fixed_phy_status);
- clkdev_add_table(m5272_clk_lookup, ARRAY_SIZE(m5272_clk_lookup));
- return 0;
- }
- arch_initcall(init_BSP);
- /***************************************************************************/
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