linux/arch/arm/mach-mxs/include/mach/mxs.h
Shawn Guo 845da6bf65 ARM: mxs: detect SoC by checking CHIPID register
Both imx23 and imx28 have CHIPID register at address 0x8001c310, which
can be used to identify the SoC.  This patch changes cpu_is_xxx and
__arch_decomp_setup to use this CHIPID register than machine type to
detect the chip between imx23 and imx28, so that we do not need to
change these functions whenever a new board/machine gets added.

Suggested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
2012-01-27 11:47:37 +08:00

118 lines
3.8 KiB
C

/*
* Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __MACH_MXS_H__
#define __MACH_MXS_H__
#ifndef __ASSEMBLER__
#include <linux/io.h>
#endif
#include <asm/mach-types.h>
#include <mach/digctl.h>
#include <mach/hardware.h>
/*
* IO addresses common to MXS-based
*/
#define MXS_IO_BASE_ADDR 0x80000000
#define MXS_IO_SIZE SZ_1M
#define MXS_ICOLL_BASE_ADDR (MXS_IO_BASE_ADDR + 0x000000)
#define MXS_APBH_DMA_BASE_ADDR (MXS_IO_BASE_ADDR + 0x004000)
#define MXS_BCH_BASE_ADDR (MXS_IO_BASE_ADDR + 0x00a000)
#define MXS_GPMI_BASE_ADDR (MXS_IO_BASE_ADDR + 0x00c000)
#define MXS_PINCTRL_BASE_ADDR (MXS_IO_BASE_ADDR + 0x018000)
#define MXS_DIGCTL_BASE_ADDR (MXS_IO_BASE_ADDR + 0x01c000)
#define MXS_APBX_DMA_BASE_ADDR (MXS_IO_BASE_ADDR + 0x024000)
#define MXS_DCP_BASE_ADDR (MXS_IO_BASE_ADDR + 0x028000)
#define MXS_PXP_BASE_ADDR (MXS_IO_BASE_ADDR + 0x02a000)
#define MXS_OCOTP_BASE_ADDR (MXS_IO_BASE_ADDR + 0x02c000)
#define MXS_AXI_AHB0_BASE_ADDR (MXS_IO_BASE_ADDR + 0x02e000)
#define MXS_LCDIF_BASE_ADDR (MXS_IO_BASE_ADDR + 0x030000)
#define MXS_CLKCTRL_BASE_ADDR (MXS_IO_BASE_ADDR + 0x040000)
#define MXS_SAIF0_BASE_ADDR (MXS_IO_BASE_ADDR + 0x042000)
#define MXS_POWER_BASE_ADDR (MXS_IO_BASE_ADDR + 0x044000)
#define MXS_SAIF1_BASE_ADDR (MXS_IO_BASE_ADDR + 0x046000)
#define MXS_LRADC_BASE_ADDR (MXS_IO_BASE_ADDR + 0x050000)
#define MXS_SPDIF_BASE_ADDR (MXS_IO_BASE_ADDR + 0x054000)
#define MXS_I2C0_BASE_ADDR (MXS_IO_BASE_ADDR + 0x058000)
#define MXS_PWM_BASE_ADDR (MXS_IO_BASE_ADDR + 0x064000)
#define MXS_TIMROT_BASE_ADDR (MXS_IO_BASE_ADDR + 0x068000)
#define MXS_AUART1_BASE_ADDR (MXS_IO_BASE_ADDR + 0x06c000)
#define MXS_AUART2_BASE_ADDR (MXS_IO_BASE_ADDR + 0x06e000)
#define MXS_DRAM_BASE_ADDR (MXS_IO_BASE_ADDR + 0x0e0000)
/*
* It maps the whole address space to [0xf4000000, 0xf50fffff].
*
* OCRAM 0x00000000+0x020000 -> 0xf4000000+0x020000
* IO 0x80000000+0x100000 -> 0xf5000000+0x100000
*/
#define MXS_IO_P2V(x) (0xf4000000 + \
(((x) & 0x80000000) >> 7) + \
(((x) & 0x000fffff)))
#define MXS_IO_ADDRESS(x) IOMEM(MXS_IO_P2V(x))
#define mxs_map_entry(soc, name, _type) { \
.virtual = soc ## _IO_P2V(soc ## _ ## name ## _BASE_ADDR), \
.pfn = __phys_to_pfn(soc ## _ ## name ## _BASE_ADDR), \
.length = soc ## _ ## name ## _SIZE, \
.type = _type, \
}
#define MXS_GPIO_NR(bank, nr) ((bank) * 32 + (nr))
#define MXS_SET_ADDR 0x4
#define MXS_CLR_ADDR 0x8
#define MXS_TOG_ADDR 0xc
#ifndef __ASSEMBLER__
static inline void __mxs_setl(u32 mask, void __iomem *reg)
{
__raw_writel(mask, reg + MXS_SET_ADDR);
}
static inline void __mxs_clrl(u32 mask, void __iomem *reg)
{
__raw_writel(mask, reg + MXS_CLR_ADDR);
}
static inline void __mxs_togl(u32 mask, void __iomem *reg)
{
__raw_writel(mask, reg + MXS_TOG_ADDR);
}
/*
* MXS CPU types
*/
#define MXS_CHIPID (MXS_IO_ADDRESS(MXS_DIGCTL_BASE_ADDR) + HW_DIGCTL_CHIPID)
static inline int cpu_is_mx23(void)
{
return ((__raw_readl(MXS_CHIPID) >> 16) == 0x3780);
}
static inline int cpu_is_mx28(void)
{
return ((__raw_readl(MXS_CHIPID) >> 16) == 0x2800);
}
#endif
#endif /* __MACH_MXS_H__ */