f205cfaf6c
Let's make the omap1 specific parts private to mach-omap1. These should not be in the shared code. Signed-off-by: Tony Lindgren <tony@atomide.com>
76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/*
|
|
* OMAP SRAM detection and management
|
|
*
|
|
* Copyright (C) 2005 Nokia Corporation
|
|
* Written by Tony Lindgren <tony@atomide.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/io.h>
|
|
|
|
#include <asm/fncpy.h>
|
|
#include <asm/tlb.h>
|
|
#include <asm/cacheflush.h>
|
|
|
|
#include <asm/mach/map.h>
|
|
|
|
#include "soc.h"
|
|
#include "sram.h"
|
|
|
|
#define OMAP1_SRAM_PA 0x20000000
|
|
#define SRAM_BOOTLOADER_SZ 0x80
|
|
|
|
/*
|
|
* The amount of SRAM depends on the core type.
|
|
* Note that we cannot try to test for SRAM here because writes
|
|
* to secure SRAM will hang the system. Also the SRAM is not
|
|
* yet mapped at this point.
|
|
*/
|
|
static void __init omap_detect_and_map_sram(void)
|
|
{
|
|
unsigned long omap_sram_skip = SRAM_BOOTLOADER_SZ;
|
|
unsigned long omap_sram_start = OMAP1_SRAM_PA;
|
|
unsigned long omap_sram_size;
|
|
|
|
if (cpu_is_omap7xx())
|
|
omap_sram_size = 0x32000; /* 200K */
|
|
else if (cpu_is_omap15xx())
|
|
omap_sram_size = 0x30000; /* 192K */
|
|
else if (cpu_is_omap1610() || cpu_is_omap1611() ||
|
|
cpu_is_omap1621() || cpu_is_omap1710())
|
|
omap_sram_size = 0x4000; /* 16K */
|
|
else {
|
|
pr_err("Could not detect SRAM size\n");
|
|
omap_sram_size = 0x4000;
|
|
}
|
|
|
|
omap_map_sram(omap_sram_start, omap_sram_size,
|
|
omap_sram_skip, 1);
|
|
}
|
|
|
|
static void (*_omap_sram_reprogram_clock)(u32 dpllctl, u32 ckctl);
|
|
|
|
void omap_sram_reprogram_clock(u32 dpllctl, u32 ckctl)
|
|
{
|
|
BUG_ON(!_omap_sram_reprogram_clock);
|
|
/* On 730, bit 13 must always be 1 */
|
|
if (cpu_is_omap7xx())
|
|
ckctl |= 0x2000;
|
|
_omap_sram_reprogram_clock(dpllctl, ckctl);
|
|
}
|
|
|
|
int __init omap_sram_init(void)
|
|
{
|
|
omap_detect_and_map_sram();
|
|
_omap_sram_reprogram_clock =
|
|
omap_sram_push(omap1_sram_reprogram_clock,
|
|
omap1_sram_reprogram_clock_sz);
|
|
|
|
return 0;
|
|
}
|