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/*
* Copyright 2008-2011 DENX Software Engineering GmbH
* Author: Heiko Schocher <hs@denx.de>
*
* Description:
* Keymile 83xx platform specific routines.
*
* 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/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/initrd.h>
#include <linux/of_platform.h>
#include <linux/of_device.h>
#include <linux/atomic.h>
#include <linux/time.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/ipic.h>
#include <asm/irq.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
#include <asm/qe.h>
#include <asm/qe_ic.h>
#include "mpc83xx.h"
#define SVR_REV(svr) (((svr) >> 0) & 0xFFFF) /* Revision field */
static void quirk_mpc8360e_qe_enet10(void)
{
/*
* handle mpc8360E Erratum QE_ENET10:
* RGMII AC values do not meet the specification
*/
uint svid = mfspr(SPRN_SVR);
struct device_node *np_par;
struct resource res;
void __iomem *base;
int ret;
np_par = of_find_node_by_name(NULL, "par_io");
if (np_par == NULL) {
pr_warn("%s couldn;t find par_io node\n", __func__);
return;
}
/* Map Parallel I/O ports registers */
ret = of_address_to_resource(np_par, 0, &res);
if (ret) {
pr_warn("%s couldn;t map par_io registers\n", __func__);
return;
}
base = ioremap(res.start, res.end - res.start + 1);
/*
* set output delay adjustments to default values according
* table 5 in Errata Rev. 5, 9/2011:
*
* write 0b01 to UCC1 bits 18:19
* write 0b01 to UCC2 option 1 bits 4:5
* write 0b01 to UCC2 option 2 bits 16:17
*/
clrsetbits_be32((base + 0xa8), 0x0c00f000, 0x04005000);
/*
* set output delay adjustments to default values according
* table 3-13 in Reference Manual Rev.3 05/2010:
*
* write 0b01 to UCC2 option 2 bits 16:17
* write 0b0101 to UCC1 bits 20:23
* write 0b0101 to UCC2 option 1 bits 24:27
*/
clrsetbits_be32((base + 0xac), 0x0000cff0, 0x00004550);
if (SVR_REV(svid) == 0x0021) {
/*
* UCC2 option 1: write 0b1010 to bits 24:27
* at address IMMRBAR+0x14AC
*/
clrsetbits_be32((base + 0xac), 0x000000f0, 0x000000a0);
} else if (SVR_REV(svid) == 0x0020) {
/*
* UCC1: write 0b11 to bits 18:19
* at address IMMRBAR+0x14A8
*/
setbits32((base + 0xa8), 0x00003000);
/*
* UCC2 option 1: write 0b11 to bits 4:5
* at address IMMRBAR+0x14A8
*/
setbits32((base + 0xa8), 0x0c000000);
/*
* UCC2 option 2: write 0b11 to bits 16:17
* at address IMMRBAR+0x14AC
*/
setbits32((base + 0xac), 0x0000c000);
}
iounmap(base);
of_node_put(np_par);
}
/* ************************************************************************
*
* Setup the architecture
*
*/
static void __init mpc83xx_km_setup_arch(void)
{
#ifdef CONFIG_QUICC_ENGINE
struct device_node *np;
#endif
if (ppc_md.progress)
ppc_md.progress("kmpbec83xx_setup_arch()", 0);
mpc83xx_setup_pci();
#ifdef CONFIG_QUICC_ENGINE
qe_reset();
np = of_find_node_by_name(NULL, "par_io");
if (np != NULL) {
par_io_init(np);
of_node_put(np);
for_each_node_by_name(np, "spi")
par_io_of_config(np);
for_each_node_by_name(np, "ucc")
par_io_of_config(np);
/* Only apply this quirk when par_io is available */
np = of_find_compatible_node(NULL, "network", "ucc_geth");
if (np != NULL) {
quirk_mpc8360e_qe_enet10();
of_node_put(np);
}
}
#endif /* CONFIG_QUICC_ENGINE */
}
machine_device_initcall(mpc83xx_km, mpc83xx_declare_of_platform_devices);
/* list of the supported boards */
static char *board[] __initdata = {
"Keymile,KMETER1",
"Keymile,kmpbec8321",
NULL
};
/*
* Called very early, MMU is off, device-tree isn't unflattened
*/
static int __init mpc83xx_km_probe(void)
{
unsigned long node = of_get_flat_dt_root();
int i = 0;
while (board[i]) {
if (of_flat_dt_is_compatible(node, board[i]))
break;
i++;
}
return (board[i] != NULL);
}
define_machine(mpc83xx_km) {
.name = "mpc83xx-km-platform",
.probe = mpc83xx_km_probe,
.setup_arch = mpc83xx_km_setup_arch,
.init_IRQ = mpc83xx_ipic_and_qe_init_IRQ,
.get_irq = ipic_get_irq,
.restart = mpc83xx_restart,
.time_init = mpc83xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
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