From 5cf79723ecb9a22de432d169ce65eb19aa651e8a Mon Sep 17 00:00:00 2001 From: Rafaël Carré Date: Tue, 3 Jan 2012 04:39:56 +0000 Subject: move PP specific files to pp/ git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31533 a1c6a512-1295-4272-9138-f99709370657 --- firmware/target/arm/pp/system-pp5002.c | 227 +++++++++++++++++++++++++++++++++ 1 file changed, 227 insertions(+) create mode 100644 firmware/target/arm/pp/system-pp5002.c (limited to 'firmware/target/arm/pp/system-pp5002.c') diff --git a/firmware/target/arm/pp/system-pp5002.c b/firmware/target/arm/pp/system-pp5002.c new file mode 100644 index 0000000000..3186d3739a --- /dev/null +++ b/firmware/target/arm/pp/system-pp5002.c @@ -0,0 +1,227 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2002 by Alan Korr + * + * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#include "system.h" + +#ifndef BOOTLOADER +#include "adc-target.h" +#include "button-target.h" + +extern void TIMER1(void); +extern void TIMER2(void); + +void __attribute__((interrupt("IRQ"))) irq_handler(void) +{ + if(CURRENT_CORE == CPU) + { + if (CPU_INT_STAT & TIMER1_MASK) + TIMER1(); + else if (CPU_INT_STAT & TIMER2_MASK) + TIMER2(); + else if (CPU_INT_STAT & GPIO_MASK) + { + if (GPIOA_INT_STAT) + ipod_3g_button_int(); +#ifdef IPOD_1G2G + if (GPIOB_INT_STAT & 0x04) + ipod_2g_adc_int(); +#endif + } + } + else + { + if (COP_INT_STAT & TIMER2_MASK) + TIMER2(); + } +} + +#endif + +#ifndef BOOTLOADER +void ICODE_ATTR __attribute__((naked)) commit_dcache(void) +{ + asm volatile( + "mov r0, #0xf0000000 \n" + "add r0, r0, #0xc000 \n" /* r0 = CACHE_FLUSH_BASE */ + "add r1, r0, #0x2000 \n" /* r1 = CACHE_FLUSH_BASE + CACHE_SIZE */ + "mov r2, #0 \n" + "1: \n" + "str r2, [r0], #16 \n" /* Commit */ + "cmp r0, r1 \n" + "blo 1b \n" + "bx lr \n" + ); +} + +void ICODE_ATTR __attribute__((naked)) commit_discard_idcache(void) +{ + asm volatile( + "mov r0, #0xf0000000 \n" + "add r2, r0, #0x4000 \n" /* r1 = CACHE_INVALIDATE_BASE */ + "add r0, r0, #0xc000 \n" /* r0 = CACHE_FLUSH_BASE */ + "add r1, r0, #0x2000 \n" /* r2 = CACHE_FLUSH_BASE + CACHE_SIZE */ + "mov r3, #0 \n" + "1: \n" + "str r3, [r0], #16 \n" /* Commit */ + "str r3, [r2], #16 \n" /* Discard */ + "cmp r0, r1 \n" + "blo 1b \n" + "bx lr \n" + ); +} + +void commit_discard_dcache(void) __attribute__((alias("commit_discard_idcache"))); + +static void ipod_init_cache(void) +{ +/* Initialising the cache in the iPod bootloader prevents Rockbox from starting */ + PROC_STAT &= ~0x700; + outl(0x4000, 0xcf004020); + + CACHE_CTL = CACHE_CTL_INIT; + + asm volatile( + "mov r0, #0xf0000000 \n" + "add r0, r0, #0x4000 \n" /* r0 = CACHE_INVALIDATE_BASE */ + "add r1, r0, #0x2000 \n" /* r1 = CACHE_INVALIDATE_BASE + CACHE_SIZE */ + "mov r2, #0 \n" + "1: \n" + "str r2, [r0], #16 \n" /* Invalidate */ + "cmp r0, r1 \n" + "blo 1b \n" + : : : "r0", "r1", "r2" + ); + + /* Cache if (addr & mask) >> 16 == (mask & match) >> 16: + * yes: 0x00000000 - 0x03ffffff + * no: 0x04000000 - 0x1fffffff + * yes: 0x20000000 - 0x23ffffff + * no: 0x24000000 - 0x3fffffff <= range containing uncached alias + */ + CACHE_MASK = 0x00001c00; + CACHE_OPERATION = 0x3fc0; + + CACHE_CTL = CACHE_CTL_INIT | CACHE_CTL_RUN; +} + +#ifdef HAVE_ADJUSTABLE_CPU_FREQ +void set_cpu_frequency(long frequency) +#else +static void pp_set_cpu_frequency(long frequency) +#endif +{ + cpu_frequency = frequency; + + PLL_CONTROL |= 0x6000; /* make sure some enable bits are set */ + CLOCK_ENABLE = 0x01; /* select source #1 */ + + switch (frequency) + { + case CPUFREQ_MAX: + PLL_UNLOCK = 0xd19b; /* unlock frequencies > 66MHz */ + CLOCK_SOURCE = 0xa9; /* source #1: 24 Mhz, source #2..#4: PLL */ + PLL_CONTROL = 0xe000; /* PLL enabled */ + PLL_DIV = 3; /* 10/3 * 24MHz */ + PLL_MULT = 10; + udelay(200); /* wait for relock */ + break; + + case CPUFREQ_NORMAL: + CLOCK_SOURCE = 0xa9; /* source #1: 24 Mhz, source #2..#4: PLL */ + PLL_CONTROL = 0xe000; /* PLL enabled */ + PLL_DIV = 4; /* 5/4 * 24MHz */ + PLL_MULT = 5; + udelay(200); /* wait for relock */ + break; + + case CPUFREQ_SLEEP: + CLOCK_SOURCE = 0x51; /* source #2: 32kHz, #1, #2, #4: 24MHz */ + PLL_CONTROL = 0x6000; /* PLL disabled */ + udelay(10000); /* let 32kHz source stabilize? */ + break; + + default: + CLOCK_SOURCE = 0x55; /* source #1..#4: 24 Mhz */ + PLL_CONTROL = 0x6000; /* PLL disabled */ + cpu_frequency = CPUFREQ_DEFAULT; + break; + } + CLOCK_ENABLE = 0x02; /* select source #2 */ +} +#endif /* !BOOTLOADER */ + +void system_init(void) +{ +#ifndef BOOTLOADER + if (CURRENT_CORE == CPU) + { + /* Remap the flash ROM on CPU, keep hidden from COP: + * 0x00000000-0x03ffffff = 0x20000000-0x23ffffff */ + MMAP1_LOGICAL = 0x20003c00; + MMAP1_PHYSICAL = 0x00003f84; + +#if defined(IPOD_1G2G) || defined(IPOD_3G) + DEV_EN = 0x0b9f; /* don't clock unused PP5002 hardware components */ + outl(0x0035, 0xcf005004); /* DEV_EN2 ? */ +#endif + + INT_FORCED_CLR = -1; + CPU_INT_DIS = -1; + COP_INT_DIS = -1; + + GPIOA_INT_EN = 0; + GPIOB_INT_EN = 0; + GPIOC_INT_EN = 0; + GPIOD_INT_EN = 0; + +#ifdef HAVE_ADJUSTABLE_CPU_FREQ +#if NUM_CORES > 1 + cpu_boost_init(); +#endif +#else + pp_set_cpu_frequency(CPUFREQ_MAX); +#endif + } + ipod_init_cache(); +#endif +} + +void system_reboot(void) +{ + DEV_RS |= 4; + while (1); +} + +void system_exception_wait(void) +{ + /* FIXME: we just need the right buttons */ + CPU_INT_DIS = -1; + COP_INT_DIS = -1; + + /* Halt */ + sleep_core(CURRENT_CORE); + while (1); +} + +int system_memory_guard(int newmode) +{ + (void)newmode; + return 0; +} -- cgit v1.2.3