From f43e50dc5333c096366a2a1cfd24728ea8030f62 Mon Sep 17 00:00:00 2001 From: Barry Wardell Date: Sun, 22 Apr 2007 12:03:17 +0000 Subject: Move PortalPlayer system.c code into the target tree. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13239 a1c6a512-1295-4272-9138-f99709370657 --- firmware/target/arm/system-pp5002.c | 184 ++++++++++++++++++++++++++++++++++++ 1 file changed, 184 insertions(+) create mode 100644 firmware/target/arm/system-pp5002.c (limited to 'firmware/target/arm/system-pp5002.c') diff --git a/firmware/target/arm/system-pp5002.c b/firmware/target/arm/system-pp5002.c new file mode 100644 index 0000000000..4954d0660a --- /dev/null +++ b/firmware/target/arm/system-pp5002.c @@ -0,0 +1,184 @@ +/*************************************************************************** + * __________ __ ___. + * 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 +#include "config.h" +#include +#include "lcd.h" +#include "font.h" +#include "system.h" +#include "kernel.h" +#include "thread.h" +#include "timer.h" +#include "inttypes.h" +#include "string.h" + +unsigned int ipod_hw_rev; +#ifndef BOOTLOADER +extern void TIMER1(void); +extern void TIMER2(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 (COP_INT_STAT & TIMER1_MASK) + TIMER1(); + else if (COP_INT_STAT & TIMER2_MASK) + TIMER2(); + } +} + +#endif + +unsigned int current_core(void) +{ + if(((*(volatile unsigned long *)(0xc4000000)) & 0xff) == 0x55) + { + return CPU; + } + return COP; +} + + +/* 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) +{ + int i =0; +/* Initialising the cache in the iPod bootloader prevents Rockbox from starting */ + outl(inl(0xcf004050) & ~0x700, 0xcf004050); + outl(0x4000, 0xcf004020); + + outl(0x2, 0xcf004024); + + /* PP5002 has 8KB cache */ + for (i = 0xf0004000; i < (int)(0xf0006000); i += 16) { + outl(0x0, i); + } + + outl(0x0, 0xf000f020); + outl(0x3fc0, 0xf000f024); + + outl(0x3, 0xcf004024); +} + +#endif + +#ifdef HAVE_ADJUSTABLE_CPU_FREQ +void set_cpu_frequency(long frequency) +{ + unsigned long postmult; + + if (CURRENT_CORE == CPU) + { + 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; + + outl(0x02, 0xcf005008); + outl(0x55, 0xcf00500c); + outl(0x6000, 0xcf005010); + + /* Clock frequency = (24/8)*postmult */ + outl(8, 0xcf005018); + outl(postmult, 0xcf00501c); + + outl(0xe000, 0xcf005010); + + /* Wait for PLL relock? */ + udelay(2000); + + /* Select PLL as clock source? */ + outl(0xa8, 0xcf00500c); + } +} +#elif !defined(BOOTLOADER) +static void ipod_set_cpu_speed(void) +{ + outl(0x02, 0xcf005008); + outl(0x55, 0xcf00500c); + outl(0x6000, 0xcf005010); +#if 1 + // 75 MHz (24/24 * 75) (default) + outl(24, 0xcf005018); + outl(75, 0xcf00501c); +#endif + +#if 0 + // 66 MHz (24/3 * 8) + outl(3, 0xcf005018); + outl(8, 0xcf00501c); +#endif + + outl(0xe000, 0xcf005010); + + udelay(2000); + + outl(0xa8, 0xcf00500c); +} +#endif + +void system_init(void) +{ +#ifndef BOOTLOADER + if (CURRENT_CORE == CPU) + { + /* Remap the flash ROM from 0x00000000 to 0x20000000. */ + MMAP3_LOGICAL = 0x20000000 | 0x3a00; + MMAP3_PHYSICAL = 0x00000000 | 0x3f84; + + ipod_hw_rev = (*((volatile unsigned long*)(0x01fffffc))); + outl(-1, 0xcf00101c); + outl(-1, 0xcf001028); + outl(-1, 0xcf001038); +#ifndef HAVE_ADJUSTABLE_CPU_FREQ + ipod_set_cpu_speed(); +#endif + } + ipod_init_cache(); +#endif +} + +void system_reboot(void) +{ + outl(inl(0xcf005030) | 0x4, 0xcf005030); +} + +int system_memory_guard(int newmode) +{ + (void)newmode; + return 0; +} + + -- cgit v1.2.3