mirror of https://gitee.com/openkylin/linux.git
177 lines
4.8 KiB
C
177 lines
4.8 KiB
C
/*
|
|
* MPC85xx setup and early boot code plus other random bits.
|
|
*
|
|
* Maintained by Kumar Gala (see MAINTAINERS for contact information)
|
|
*
|
|
* Copyright 2005 Freescale Semiconductor Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*/
|
|
|
|
#include <linux/stddef.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/kdev_t.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/of_platform.h>
|
|
|
|
#include <asm/time.h>
|
|
#include <asm/machdep.h>
|
|
#include <asm/pci-bridge.h>
|
|
#include <asm/mpic.h>
|
|
#include <mm/mmu_decl.h>
|
|
#include <asm/udbg.h>
|
|
|
|
#include <sysdev/fsl_soc.h>
|
|
#include <sysdev/fsl_pci.h>
|
|
|
|
#ifdef CONFIG_CPM2
|
|
#include <asm/cpm2.h>
|
|
#include <sysdev/cpm2_pic.h>
|
|
#endif
|
|
|
|
#include "mpc85xx.h"
|
|
|
|
static void __init mpc85xx_ads_pic_init(void)
|
|
{
|
|
struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN,
|
|
0, 256, " OpenPIC ");
|
|
BUG_ON(mpic == NULL);
|
|
mpic_init(mpic);
|
|
|
|
mpc85xx_cpm2_pic_init();
|
|
}
|
|
|
|
/*
|
|
* Setup the architecture
|
|
*/
|
|
#ifdef CONFIG_CPM2
|
|
struct cpm_pin {
|
|
int port, pin, flags;
|
|
};
|
|
|
|
static const struct cpm_pin mpc8560_ads_pins[] = {
|
|
/* SCC1 */
|
|
{3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
|
|
{3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
|
|
/* SCC2 */
|
|
{2, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{2, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
|
|
/* FCC2 */
|
|
{1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
|
|
{1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK14 */
|
|
{2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK13 */
|
|
|
|
/* FCC3 */
|
|
{1, 4, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{1, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{1, 6, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{1, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 14, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{1, 15, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
{1, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{1, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
|
|
{2, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK16 */
|
|
{2, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK15 */
|
|
{2, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
|
|
};
|
|
|
|
static void __init init_ioports(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(mpc8560_ads_pins); i++) {
|
|
const struct cpm_pin *pin = &mpc8560_ads_pins[i];
|
|
cpm2_set_pin(pin->port, pin->pin, pin->flags);
|
|
}
|
|
|
|
cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);
|
|
cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);
|
|
cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
|
|
cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
|
|
cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX);
|
|
cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX);
|
|
cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK15, CPM_CLK_RX);
|
|
cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK16, CPM_CLK_TX);
|
|
}
|
|
#endif
|
|
|
|
static void __init mpc85xx_ads_setup_arch(void)
|
|
{
|
|
if (ppc_md.progress)
|
|
ppc_md.progress("mpc85xx_ads_setup_arch()", 0);
|
|
|
|
#ifdef CONFIG_CPM2
|
|
cpm2_reset();
|
|
init_ioports();
|
|
#endif
|
|
|
|
fsl_pci_assign_primary();
|
|
}
|
|
|
|
static void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
|
|
{
|
|
uint pvid, svid, phid1;
|
|
|
|
pvid = mfspr(SPRN_PVR);
|
|
svid = mfspr(SPRN_SVR);
|
|
|
|
seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
|
|
seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
|
|
seq_printf(m, "SVR\t\t: 0x%x\n", svid);
|
|
|
|
/* Display cpu Pll setting */
|
|
phid1 = mfspr(SPRN_HID1);
|
|
seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
|
|
}
|
|
|
|
machine_arch_initcall(mpc85xx_ads, mpc85xx_common_publish_devices);
|
|
|
|
/*
|
|
* Called very early, device-tree isn't unflattened
|
|
*/
|
|
static int __init mpc85xx_ads_probe(void)
|
|
{
|
|
return of_machine_is_compatible("MPC85xxADS");
|
|
}
|
|
|
|
define_machine(mpc85xx_ads) {
|
|
.name = "MPC85xx ADS",
|
|
.probe = mpc85xx_ads_probe,
|
|
.setup_arch = mpc85xx_ads_setup_arch,
|
|
.init_IRQ = mpc85xx_ads_pic_init,
|
|
.show_cpuinfo = mpc85xx_ads_show_cpuinfo,
|
|
.get_irq = mpic_get_irq,
|
|
.restart = fsl_rstcr_restart,
|
|
.calibrate_decr = generic_calibrate_decr,
|
|
.progress = udbg_progress,
|
|
};
|