4a2ed72b5c
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13449 a1c6a512-1295-4272-9138-f99709370657
283 lines
7.8 KiB
C
283 lines
7.8 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2002 by Alan Korr
|
|
*
|
|
* All files in this archive are subject to the GNU General Public License.
|
|
* See the file COPYING in the source tree root for full license agreement.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
#include "system.h"
|
|
#include "thread.h"
|
|
|
|
unsigned int ipod_hw_rev;
|
|
|
|
#if NUM_CORES > 1
|
|
struct mutex boostctrl_mtx NOCACHEBSS_ATTR;
|
|
#endif
|
|
|
|
#ifndef BOOTLOADER
|
|
extern void TIMER1(void);
|
|
extern void TIMER2(void);
|
|
|
|
#if defined(IPOD_MINI) /* mini 1 only, mini 2G uses iPod 4G code */
|
|
extern void ipod_mini_button_int(void);
|
|
|
|
void irq(void)
|
|
{
|
|
if(CURRENT_CORE == CPU)
|
|
{
|
|
if (CPU_INT_STAT & TIMER1_MASK)
|
|
TIMER1();
|
|
else if (CPU_INT_STAT & TIMER2_MASK)
|
|
TIMER2();
|
|
else if (CPU_HI_INT_STAT & GPIO_MASK)
|
|
ipod_mini_button_int();
|
|
} else {
|
|
if (COP_INT_STAT & TIMER1_MASK)
|
|
TIMER1();
|
|
else if (COP_INT_STAT & TIMER2_MASK)
|
|
TIMER2();
|
|
else if (COP_HI_INT_STAT & GPIO_MASK)
|
|
ipod_mini_button_int();
|
|
}
|
|
}
|
|
#elif (defined IRIVER_H10) || (defined IRIVER_H10_5GB) || defined(ELIO_TPJ1022) \
|
|
|| (defined SANSA_E200)
|
|
/* TODO: this should really be in the target tree, but moving it there caused
|
|
crt0.S not to find it while linking */
|
|
/* TODO: Even if it isn't in the target tree, this should be the default case */
|
|
extern void button_int(void);
|
|
extern void clickwheel_int(void);
|
|
|
|
void irq(void)
|
|
{
|
|
if(CURRENT_CORE == CPU) {
|
|
if (CPU_INT_STAT & TIMER1_MASK) {
|
|
#ifdef SANSA_E200
|
|
if (GPIOF_INT_STAT & 0xff)
|
|
button_int();
|
|
if (GPIOH_INT_STAT & 0xc0)
|
|
clickwheel_int();
|
|
#endif
|
|
TIMER1();
|
|
}
|
|
else if (CPU_INT_STAT & TIMER2_MASK)
|
|
TIMER2();
|
|
} else {
|
|
if (COP_INT_STAT & TIMER1_MASK)
|
|
TIMER1();
|
|
else if (COP_INT_STAT & TIMER2_MASK)
|
|
TIMER2();
|
|
}
|
|
}
|
|
#else
|
|
extern void ipod_4g_button_int(void);
|
|
|
|
void irq(void)
|
|
{
|
|
if(CURRENT_CORE == CPU)
|
|
{
|
|
if (CPU_INT_STAT & TIMER1_MASK)
|
|
TIMER1();
|
|
else if (CPU_INT_STAT & TIMER2_MASK)
|
|
TIMER2();
|
|
else if (CPU_HI_INT_STAT & I2C_MASK)
|
|
ipod_4g_button_int();
|
|
} else {
|
|
if (COP_INT_STAT & TIMER1_MASK)
|
|
TIMER1();
|
|
else if (COP_INT_STAT & TIMER2_MASK)
|
|
TIMER2();
|
|
else if (COP_HI_INT_STAT & I2C_MASK)
|
|
ipod_4g_button_int();
|
|
}
|
|
}
|
|
#endif
|
|
#endif /* BOOTLOADER */
|
|
|
|
/* TODO: The following two function have been lifted straight from IPL, and
|
|
hence have a lot of numeric addresses used straight. I'd like to use
|
|
#defines for these, but don't know what most of them are for or even what
|
|
they should be named. Because of this I also have no way of knowing how
|
|
to extend the funtions to do alternate cache configurations and/or
|
|
some other CPU frequency scaling. */
|
|
|
|
#ifndef BOOTLOADER
|
|
static void ipod_init_cache(void)
|
|
{
|
|
/* Initialising the cache in the iPod bootloader prevents Rockbox from starting */
|
|
unsigned i;
|
|
|
|
/* cache init mode? */
|
|
CACHE_CTL = CACHE_INIT;
|
|
|
|
/* PP5002 has 8KB cache */
|
|
for (i = 0xf0004000; i < 0xf0006000; i += 16) {
|
|
outl(0x0, i);
|
|
}
|
|
|
|
outl(0x0, 0xf000f040);
|
|
outl(0x3fc0, 0xf000f044);
|
|
|
|
/* enable cache */
|
|
CACHE_CTL = CACHE_ENABLE;
|
|
|
|
for (i = 0x10000000; i < 0x10002000; i += 16)
|
|
inb(i);
|
|
}
|
|
#endif
|
|
|
|
/* Not all iPod targets support CPU freq. boosting yet */
|
|
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
|
|
void set_cpu_frequency(long frequency)
|
|
{
|
|
unsigned long postmult;
|
|
|
|
# if NUM_CORES > 1
|
|
/* Using mutex or spinlock isn't safe here. */
|
|
while (test_and_set(&boostctrl_mtx.locked, 1)) ;
|
|
# endif
|
|
|
|
if (frequency == CPUFREQ_NORMAL)
|
|
postmult = CPUFREQ_NORMAL_MULT;
|
|
else if (frequency == CPUFREQ_MAX)
|
|
postmult = CPUFREQ_MAX_MULT;
|
|
else
|
|
postmult = CPUFREQ_DEFAULT_MULT;
|
|
cpu_frequency = frequency;
|
|
|
|
/* Enable PLL? */
|
|
outl(inl(0x70000020) | (1<<30), 0x70000020);
|
|
|
|
/* Select 24MHz crystal as clock source? */
|
|
outl((inl(0x60006020) & 0x0fffff0f) | 0x20000020, 0x60006020);
|
|
|
|
/* Clock frequency = (24/8)*postmult */
|
|
outl(0xaa020000 | 8 | (postmult << 8), 0x60006034);
|
|
|
|
/* Wait for PLL relock? */
|
|
udelay(2000);
|
|
|
|
/* Select PLL as clock source? */
|
|
outl((inl(0x60006020) & 0x0fffff0f) | 0x20000070, 0x60006020);
|
|
|
|
# if defined(IPOD_COLOR) || defined(IPOD_4G) || defined(IPOD_MINI) || defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
|
|
/* We don't know why the timer interrupt gets disabled on the PP5020
|
|
based ipods, but without the following line, the 4Gs will freeze
|
|
when CPU frequency changing is enabled.
|
|
|
|
Note also that a simple "CPU_INT_EN = TIMER1_MASK;" (as used
|
|
elsewhere to enable interrupts) doesn't work, we need "|=".
|
|
|
|
It's not needed on the PP5021 and PP5022 ipods.
|
|
*/
|
|
|
|
/* unmask interrupt source */
|
|
CPU_INT_EN |= TIMER1_MASK;
|
|
COP_INT_EN |= TIMER1_MASK;
|
|
# endif
|
|
|
|
# if NUM_CORES > 1
|
|
boostctrl_mtx.locked = 0;
|
|
# endif
|
|
}
|
|
#elif !defined(BOOTLOADER)
|
|
void ipod_set_cpu_frequency(void)
|
|
{
|
|
/* Enable PLL? */
|
|
outl(inl(0x70000020) | (1<<30), 0x70000020);
|
|
|
|
/* Select 24MHz crystal as clock source? */
|
|
outl((inl(0x60006020) & 0x0fffff0f) | 0x20000020, 0x60006020);
|
|
|
|
/* Clock frequency = (24/8)*25 = 75MHz */
|
|
outl(0xaa020000 | 8 | (25 << 8), 0x60006034);
|
|
/* Wait for PLL relock? */
|
|
udelay(2000);
|
|
|
|
/* Select PLL as clock source? */
|
|
outl((inl(0x60006020) & 0x0fffff0f) | 0x20000070, 0x60006020);
|
|
}
|
|
#endif
|
|
|
|
void system_init(void)
|
|
{
|
|
#ifndef BOOTLOADER
|
|
if (CURRENT_CORE == CPU)
|
|
{
|
|
#ifdef SANSA_E200
|
|
/* Reset all devices */
|
|
DEV_RS = 0x3bfffef8;
|
|
outl(0xffffffff, 0x60006008);
|
|
DEV_RS = 0;
|
|
outl(0x00000000, 0x60006008);
|
|
#endif
|
|
/* Remap the flash ROM from 0x00000000 to 0x20000000. */
|
|
MMAP3_LOGICAL = 0x20000000 | 0x3a00;
|
|
MMAP3_PHYSICAL = 0x00000000 | 0x3f84;
|
|
|
|
/* The hw revision is written to the last 4 bytes of SDRAM by the
|
|
bootloader - we save it before Rockbox overwrites it. */
|
|
ipod_hw_rev = (*((volatile unsigned long*)(0x01fffffc)));
|
|
|
|
/* disable all irqs */
|
|
COP_HI_INT_CLR = -1;
|
|
CPU_HI_INT_CLR = -1;
|
|
HI_INT_FORCED_CLR = -1;
|
|
|
|
COP_INT_CLR = -1;
|
|
CPU_INT_CLR = -1;
|
|
INT_FORCED_CLR = -1;
|
|
|
|
GPIOA_INT_EN = 0;
|
|
GPIOB_INT_EN = 0;
|
|
GPIOC_INT_EN = 0;
|
|
GPIOD_INT_EN = 0;
|
|
GPIOE_INT_EN = 0;
|
|
GPIOF_INT_EN = 0;
|
|
GPIOG_INT_EN = 0;
|
|
GPIOH_INT_EN = 0;
|
|
GPIOI_INT_EN = 0;
|
|
GPIOJ_INT_EN = 0;
|
|
GPIOK_INT_EN = 0;
|
|
GPIOL_INT_EN = 0;
|
|
|
|
# if NUM_CORES > 1 && defined(HAVE_ADJUSTABLE_CPU_FREQ)
|
|
spinlock_init(&boostctrl_mtx);
|
|
# endif
|
|
|
|
#if (!defined HAVE_ADJUSTABLE_CPU_FREQ) && (NUM_CORES == 1)
|
|
ipod_set_cpu_frequency();
|
|
#endif
|
|
}
|
|
#if (!defined HAVE_ADJUSTABLE_CPU_FREQ) && (NUM_CORES > 1)
|
|
else
|
|
{
|
|
ipod_set_cpu_frequency();
|
|
}
|
|
#endif
|
|
ipod_init_cache();
|
|
#endif
|
|
}
|
|
|
|
void system_reboot(void)
|
|
{
|
|
/* Reboot */
|
|
DEV_RS |= DEV_SYSTEM;
|
|
}
|
|
|
|
int system_memory_guard(int newmode)
|
|
{
|
|
(void)newmode;
|
|
return 0;
|
|
}
|