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Diffstat (limited to 'arch/m68k/coldfire/m5272.c')
| -rw-r--r-- | arch/m68k/coldfire/m5272.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/arch/m68k/coldfire/m5272.c b/arch/m68k/coldfire/m5272.c new file mode 100644 index 000000000..6b3ab583c --- /dev/null +++ b/arch/m68k/coldfire/m5272.c @@ -0,0 +1,136 @@ +// SPDX-License-Identifier: GPL-2.0 +/***************************************************************************/ + +/* + * m5272.c -- platform support for ColdFire 5272 based boards + * + * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 2001-2002, SnapGear Inc. (www.snapgear.com) + */ + +/***************************************************************************/ + +#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); +DEFINE_CLK(mcftmr0, "mcftmr.0", MCF_BUSCLK); +DEFINE_CLK(mcftmr1, "mcftmr.1", MCF_BUSCLK); +DEFINE_CLK(mcftmr2, "mcftmr.2", MCF_BUSCLK); +DEFINE_CLK(mcftmr3, "mcftmr.3", MCF_BUSCLK); +DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK); +DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK); +DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK); +DEFINE_CLK(fec0, "fec.0", MCF_BUSCLK); + +struct clk *mcf_clks[] = { + &clk_pll, + &clk_sys, + &clk_mcftmr0, + &clk_mcftmr1, + &clk_mcftmr2, + &clk_mcftmr3, + &clk_mcfuart0, + &clk_mcfuart1, + &clk_mcfqspi0, + &clk_fec0, + NULL +}; + +/***************************************************************************/ + +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); + return 0; +} + +arch_initcall(init_BSP); + +/***************************************************************************/ |