mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-19 17:11:03 +00:00
c942fddf87
Based on 3 normalized pattern(s): 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 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details 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 [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details 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 [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* arch/arm/mach-lpc32xx/common.c
|
|
*
|
|
* Author: Kevin Wells <kevin.wells@nxp.com>
|
|
*
|
|
* Copyright (C) 2010 NXP Semiconductors
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/mach/map.h>
|
|
#include <asm/system_info.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <mach/platform.h>
|
|
#include "common.h"
|
|
|
|
/*
|
|
* Returns the unique ID for the device
|
|
*/
|
|
void lpc32xx_get_uid(u32 devid[4])
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 4; i++)
|
|
devid[i] = __raw_readl(LPC32XX_CLKPWR_DEVID(i << 2));
|
|
}
|
|
|
|
/*
|
|
* Detects and returns IRAM size for the device variation
|
|
*/
|
|
#define LPC32XX_IRAM_BANK_SIZE SZ_128K
|
|
static u32 iram_size;
|
|
u32 lpc32xx_return_iram_size(void)
|
|
{
|
|
if (iram_size == 0) {
|
|
u32 savedval1, savedval2;
|
|
void __iomem *iramptr1, *iramptr2;
|
|
|
|
iramptr1 = io_p2v(LPC32XX_IRAM_BASE);
|
|
iramptr2 = io_p2v(LPC32XX_IRAM_BASE + LPC32XX_IRAM_BANK_SIZE);
|
|
savedval1 = __raw_readl(iramptr1);
|
|
savedval2 = __raw_readl(iramptr2);
|
|
|
|
if (savedval1 == savedval2) {
|
|
__raw_writel(savedval2 + 1, iramptr2);
|
|
if (__raw_readl(iramptr1) == savedval2 + 1)
|
|
iram_size = LPC32XX_IRAM_BANK_SIZE;
|
|
else
|
|
iram_size = LPC32XX_IRAM_BANK_SIZE * 2;
|
|
__raw_writel(savedval2, iramptr2);
|
|
} else
|
|
iram_size = LPC32XX_IRAM_BANK_SIZE * 2;
|
|
}
|
|
|
|
return iram_size;
|
|
}
|
|
EXPORT_SYMBOL_GPL(lpc32xx_return_iram_size);
|
|
|
|
static struct map_desc lpc32xx_io_desc[] __initdata = {
|
|
{
|
|
.virtual = (unsigned long)IO_ADDRESS(LPC32XX_AHB0_START),
|
|
.pfn = __phys_to_pfn(LPC32XX_AHB0_START),
|
|
.length = LPC32XX_AHB0_SIZE,
|
|
.type = MT_DEVICE
|
|
},
|
|
{
|
|
.virtual = (unsigned long)IO_ADDRESS(LPC32XX_AHB1_START),
|
|
.pfn = __phys_to_pfn(LPC32XX_AHB1_START),
|
|
.length = LPC32XX_AHB1_SIZE,
|
|
.type = MT_DEVICE
|
|
},
|
|
{
|
|
.virtual = (unsigned long)IO_ADDRESS(LPC32XX_FABAPB_START),
|
|
.pfn = __phys_to_pfn(LPC32XX_FABAPB_START),
|
|
.length = LPC32XX_FABAPB_SIZE,
|
|
.type = MT_DEVICE
|
|
},
|
|
{
|
|
.virtual = (unsigned long)IO_ADDRESS(LPC32XX_IRAM_BASE),
|
|
.pfn = __phys_to_pfn(LPC32XX_IRAM_BASE),
|
|
.length = (LPC32XX_IRAM_BANK_SIZE * 2),
|
|
.type = MT_DEVICE
|
|
},
|
|
};
|
|
|
|
void __init lpc32xx_map_io(void)
|
|
{
|
|
iotable_init(lpc32xx_io_desc, ARRAY_SIZE(lpc32xx_io_desc));
|
|
}
|
|
|
|
static int __init lpc32xx_check_uid(void)
|
|
{
|
|
u32 uid[4];
|
|
|
|
lpc32xx_get_uid(uid);
|
|
|
|
printk(KERN_INFO "LPC32XX unique ID: %08x%08x%08x%08x\n",
|
|
uid[3], uid[2], uid[1], uid[0]);
|
|
|
|
if (!system_serial_low && !system_serial_high) {
|
|
system_serial_low = uid[0];
|
|
system_serial_high = uid[1];
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
arch_initcall(lpc32xx_check_uid);
|