diff options
Diffstat (limited to 'arch/arm/cpu/ixp')
-rw-r--r-- | arch/arm/cpu/ixp/Makefile | 12 | ||||
-rw-r--r-- | arch/arm/cpu/ixp/config.mk | 16 | ||||
-rw-r--r-- | arch/arm/cpu/ixp/cpu.c | 100 | ||||
-rw-r--r-- | arch/arm/cpu/ixp/interrupts.c | 66 | ||||
-rw-r--r-- | arch/arm/cpu/ixp/start.S | 430 | ||||
-rw-r--r-- | arch/arm/cpu/ixp/timer.c | 101 | ||||
-rw-r--r-- | arch/arm/cpu/ixp/u-boot.lds | 91 |
7 files changed, 0 insertions, 816 deletions
diff --git a/arch/arm/cpu/ixp/Makefile b/arch/arm/cpu/ixp/Makefile deleted file mode 100644 index 4e66523c03..0000000000 --- a/arch/arm/cpu/ixp/Makefile +++ /dev/null @@ -1,12 +0,0 @@ -# -# (C) Copyright 2000-2006 -# Wolfgang Denk, DENX Software Engineering, wd@denx.de. -# -# SPDX-License-Identifier: GPL-2.0+ -# - -extra-y = start.o - -obj-y += cpu.o -obj-$(CONFIG_USE_IRQ) += interrupts.o -obj-y += timer.o diff --git a/arch/arm/cpu/ixp/config.mk b/arch/arm/cpu/ixp/config.mk deleted file mode 100644 index 894861fb4f..0000000000 --- a/arch/arm/cpu/ixp/config.mk +++ /dev/null @@ -1,16 +0,0 @@ -# -# (C) Copyright 2002 -# Sysgo Real-Time Solutions, GmbH <www.elinos.com> -# Marius Groeger <mgroeger@sysgo.de> -# -# SPDX-License-Identifier: GPL-2.0+ -# - -BIG_ENDIAN = y - -PLATFORM_RELFLAGS += -mbig-endian - -PLATFORM_CPPFLAGS += -mbig-endian -march=armv5te -mtune=strongarm1100 - -PLATFORM_LDFLAGS += -EB -USE_PRIVATE_LIBGCC = yes diff --git a/arch/arm/cpu/ixp/cpu.c b/arch/arm/cpu/ixp/cpu.c deleted file mode 100644 index 4387c18d3d..0000000000 --- a/arch/arm/cpu/ixp/cpu.c +++ /dev/null @@ -1,100 +0,0 @@ -/* - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Marius Groeger <mgroeger@sysgo.de> - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Alex Zuepke <azu@sysgo.de> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * CPU specific code - */ - -#include <common.h> -#include <command.h> -#include <netdev.h> -#include <asm/arch/ixp425.h> -#include <asm/system.h> - -static void cache_flush(void); - -#if defined(CONFIG_DISPLAY_CPUINFO) -int print_cpuinfo (void) -{ - unsigned long id; - int speed = 0; - - asm ("mrc p15, 0, %0, c0, c0, 0":"=r" (id)); - - puts("CPU: Intel IXP425 at "); - switch ((id & 0x000003f0) >> 4) { - case 0x1c: - speed = 533; - break; - - case 0x1d: - speed = 400; - break; - - case 0x1f: - speed = 266; - break; - } - - if (speed) - printf("%d MHz\n", speed); - else - puts("unknown revision\n"); - - return 0; -} -#endif /* CONFIG_DISPLAY_CPUINFO */ - -int cleanup_before_linux (void) -{ - /* - * this function is called just before we call linux - * it prepares the processor for linux - * - * just disable everything that can disturb booting linux - */ - - disable_interrupts (); - - /* turn off I-cache */ - icache_disable(); - dcache_disable(); - - /* flush I-cache */ - cache_flush(); - - return 0; -} - -/* flush I/D-cache */ -static void cache_flush (void) -{ - unsigned long i = 0; - - asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i)); -} - -/* FIXME */ -/* -void pci_init(void) -{ - return; -} -*/ - -int cpu_eth_init(bd_t *bis) -{ -#ifdef CONFIG_IXP4XX_NPE - npe_initialize(bis); -#endif - return 0; -} diff --git a/arch/arm/cpu/ixp/interrupts.c b/arch/arm/cpu/ixp/interrupts.c deleted file mode 100644 index 7694c6a6cc..0000000000 --- a/arch/arm/cpu/ixp/interrupts.c +++ /dev/null @@ -1,66 +0,0 @@ -/* - * (C) Copyright 2006 - * Stefan Roese, DENX Software Engineering, sr@denx.de. - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Marius Groeger <mgroeger@sysgo.de> - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Alex Zuepke <azu@sysgo.de> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/arch/ixp425.h> -#include <asm/proc-armv/ptrace.h> - -struct _irq_handler { - void *m_data; - void (*m_func)( void *data); -}; - -static struct _irq_handler IRQ_HANDLER[N_IRQS]; - -static void default_isr(void *data) -{ - printf("default_isr(): called for IRQ %d, Interrupt Status=%x PR=%x\n", - (int)data, *IXP425_ICIP, *IXP425_ICIH); -} - -static int next_irq(void) -{ - return (((*IXP425_ICIH & 0x000000fc) >> 2) - 1); -} - -void do_irq (struct pt_regs *pt_regs) -{ - int irq = next_irq(); - - IRQ_HANDLER[irq].m_func(IRQ_HANDLER[irq].m_data); -} - -void irq_install_handler (int irq, interrupt_handler_t handle_irq, void *data) -{ - if (irq >= N_IRQS || !handle_irq) - return; - - IRQ_HANDLER[irq].m_data = data; - IRQ_HANDLER[irq].m_func = handle_irq; -} - -int arch_interrupt_init (void) -{ - int i; - - /* install default interrupt handlers */ - for (i = 0; i < N_IRQS; i++) - irq_install_handler(i, default_isr, (void *)i); - - /* configure interrupts for IRQ mode */ - *IXP425_ICLR = 0x00000000; - - return (0); -} diff --git a/arch/arm/cpu/ixp/start.S b/arch/arm/cpu/ixp/start.S deleted file mode 100644 index 82c868a174..0000000000 --- a/arch/arm/cpu/ixp/start.S +++ /dev/null @@ -1,430 +0,0 @@ -/* vi: set ts=8 sw=8 noet: */ -/* - * u-boot - Startup Code for XScale IXP - * - * Copyright (C) 2003 Kyle Harris <kharris@nexus-tech.net> - * - * Based on startup code example contained in the - * Intel IXP4xx Programmer's Guide and past u-boot Start.S - * samples. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <asm-offsets.h> -#include <config.h> -#include <version.h> -#include <asm/arch/ixp425.h> - -#define MMU_Control_M 0x001 /* Enable MMU */ -#define MMU_Control_A 0x002 /* Enable address alignment faults */ -#define MMU_Control_C 0x004 /* Enable cache */ -#define MMU_Control_W 0x008 /* Enable write-buffer */ -#define MMU_Control_P 0x010 /* Compatability: 32 bit code */ -#define MMU_Control_D 0x020 /* Compatability: 32 bit data */ -#define MMU_Control_L 0x040 /* Compatability: */ -#define MMU_Control_B 0x080 /* Enable Big-Endian */ -#define MMU_Control_S 0x100 /* Enable system protection */ -#define MMU_Control_R 0x200 /* Enable ROM protection */ -#define MMU_Control_I 0x1000 /* Enable Instruction cache */ -#define MMU_Control_X 0x2000 /* Set interrupt vectors at 0xFFFF0000 */ -#define MMU_Control_Init (MMU_Control_P|MMU_Control_D|MMU_Control_L) - - -/* - * Macro definitions - */ - /* Delay a bit */ - .macro DELAY_FOR cycles, reg0 - ldr \reg0, =\cycles - subs \reg0, \reg0, #1 - subne pc, pc, #0xc - .endm - - /* wait for coprocessor write complete */ - .macro CPWAIT reg - mrc p15,0,\reg,c2,c0,0 - mov \reg,\reg - sub pc,pc,#4 - .endm - -.globl _start -_start: - ldr pc, _reset - ldr pc, _undefined_instruction - ldr pc, _software_interrupt - ldr pc, _prefetch_abort - ldr pc, _data_abort - ldr pc, _not_used - ldr pc, _irq - ldr pc, _fiq - -_reset: .word reset -_undefined_instruction: .word undefined_instruction -_software_interrupt: .word software_interrupt -_prefetch_abort: .word prefetch_abort -_data_abort: .word data_abort -_not_used: .word not_used -_irq: .word irq -_fiq: .word fiq - - .balignl 16,0xdeadbeef - - -/* - * Startup Code (reset vector) - * - * do important init only if we don't start from memory! - * - relocate armboot to ram - * - setup stack - * - jump to second stage - */ - -.globl _TEXT_BASE -_TEXT_BASE: -#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_TEXT_BASE) - .word CONFIG_SPL_TEXT_BASE -#else - .word CONFIG_SYS_TEXT_BASE -#endif - -/* - * These are defined in the board-specific linker script. - * Subtracting _start from them lets the linker put their - * relative position in the executable instead of leaving - * them null. - */ -.globl _bss_start_ofs -_bss_start_ofs: - .word __bss_start - _start - -.globl _bss_end_ofs -_bss_end_ofs: - .word __bss_end - _start - -.globl _end_ofs -_end_ofs: - .word _end - _start - -#ifdef CONFIG_USE_IRQ -/* IRQ stack memory (calculated at run-time) */ -.globl IRQ_STACK_START -IRQ_STACK_START: - .word 0x0badc0de - -/* IRQ stack memory (calculated at run-time) */ -.globl FIQ_STACK_START -FIQ_STACK_START: - .word 0x0badc0de -#endif - -/* IRQ stack memory (calculated at run-time) + 8 bytes */ -.globl IRQ_STACK_START_IN -IRQ_STACK_START_IN: - .word 0x0badc0de - -/* - * the actual reset code - */ - -reset: - /* disable mmu, set big-endian */ - mov r0, #0xf8 - mcr p15, 0, r0, c1, c0, 0 - CPWAIT r0 - - /* invalidate I & D caches & BTB */ - mcr p15, 0, r0, c7, c7, 0 - CPWAIT r0 - - /* invalidate I & Data TLB */ - mcr p15, 0, r0, c8, c7, 0 - CPWAIT r0 - - /* drain write and fill buffers */ - mcr p15, 0, r0, c7, c10, 4 - CPWAIT r0 - - /* disable write buffer coalescing */ - mrc p15, 0, r0, c1, c0, 1 - orr r0, r0, #1 - mcr p15, 0, r0, c1, c0, 1 - CPWAIT r0 - - /* set EXP CS0 to the optimum timing */ - ldr r1, =CONFIG_SYS_EXP_CS0 - ldr r2, =IXP425_EXP_CS0 - str r1, [r2] - - /* make sure flash is visible at 0 */ - mov r1, #CONFIG_SYS_SDR_CONFIG - ldr r2, =IXP425_SDR_CONFIG - str r1, [r2] - - /* disable refresh cycles */ - mov r1, #0 - ldr r3, =IXP425_SDR_REFRESH - str r1, [r3] - - /* send nop command */ - mov r1, #3 - ldr r4, =IXP425_SDR_IR - str r1, [r4] - DELAY_FOR 0x4000, r0 - - /* set SDRAM internal refresh val */ - ldr r1, =CONFIG_SYS_SDRAM_REFRESH_CNT - str r1, [r3] - DELAY_FOR 0x4000, r0 - - /* send precharge-all command to close all open banks */ - mov r1, #2 - str r1, [r4] - DELAY_FOR 0x4000, r0 - - /* provide 8 auto-refresh cycles */ - mov r1, #4 - mov r5, #8 -111: str r1, [r4] - DELAY_FOR 0x100, r0 - subs r5, r5, #1 - bne 111b - - /* set mode register in sdram */ - mov r1, #CONFIG_SYS_SDR_MODE_CONFIG - str r1, [r4] - DELAY_FOR 0x4000, r0 - - /* send normal operation command */ - mov r1, #6 - str r1, [r4] - DELAY_FOR 0x4000, r0 - - /* invalidate I & D caches & BTB */ - mcr p15, 0, r0, c7, c7, 0 - CPWAIT r0 - - /* invalidate I & Data TLB */ - mcr p15, 0, r0, c8, c7, 0 - CPWAIT r0 - - /* drain write and fill buffers */ - mcr p15, 0, r0, c7, c10, 4 - CPWAIT r0 - - /* remove flash mirror at 0x00000000 */ - ldr r2, =IXP425_EXP_CFG0 - ldr r1, [r2] - bic r1, r1, #0x80000000 - str r1, [r2] - - /* invalidate I & Data TLB */ - mcr p15, 0, r0, c8, c7, 0 - CPWAIT r0 - - /* enable I cache */ - mrc p15, 0, r0, c1, c0, 0 - orr r0, r0, #MMU_Control_I - mcr p15, 0, r0, c1, c0, 0 - CPWAIT r0 - - mrs r0,cpsr /* set the cpu to SVC32 mode */ - bic r0,r0,#0x1f /* (superviser mode, M=10011) */ - orr r0,r0,#0x13 - msr cpsr,r0 - - bl _main - -/*------------------------------------------------------------------------------*/ - - .globl c_runtime_cpu_setup -c_runtime_cpu_setup: - - bx lr - -/****************************************************************************/ -/* */ -/* Interrupt handling */ -/* */ -/****************************************************************************/ - -/* IRQ stack frame */ - -#define S_FRAME_SIZE 72 - -#define S_OLD_R0 68 -#define S_PSR 64 -#define S_PC 60 -#define S_LR 56 -#define S_SP 52 - -#define S_IP 48 -#define S_FP 44 -#define S_R10 40 -#define S_R9 36 -#define S_R8 32 -#define S_R7 28 -#define S_R6 24 -#define S_R5 20 -#define S_R4 16 -#define S_R3 12 -#define S_R2 8 -#define S_R1 4 -#define S_R0 0 - -#define MODE_SVC 0x13 - - /* use bad_save_user_regs for abort/prefetch/undef/swi ... */ - - .macro bad_save_user_regs - sub sp, sp, #S_FRAME_SIZE - stmia sp, {r0 - r12} /* Calling r0-r12 */ - add r8, sp, #S_PC - - ldr r2, IRQ_STACK_START_IN - ldmia r2, {r2 - r4} /* get pc, cpsr, old_r0 */ - add r0, sp, #S_FRAME_SIZE /* restore sp_SVC */ - - add r5, sp, #S_SP - mov r1, lr - stmia r5, {r0 - r4} /* save sp_SVC, lr_SVC, pc, cpsr, old_r */ - mov r0, sp - .endm - - - /* use irq_save_user_regs / irq_restore_user_regs for */ - /* IRQ/FIQ handling */ - - .macro irq_save_user_regs - sub sp, sp, #S_FRAME_SIZE - stmia sp, {r0 - r12} /* Calling r0-r12 */ - add r8, sp, #S_PC - stmdb r8, {sp, lr}^ /* Calling SP, LR */ - str lr, [r8, #0] /* Save calling PC */ - mrs r6, spsr - str r6, [r8, #4] /* Save CPSR */ - str r0, [r8, #8] /* Save OLD_R0 */ - mov r0, sp - .endm - - .macro irq_restore_user_regs - ldmia sp, {r0 - lr}^ @ Calling r0 - lr - mov r0, r0 - ldr lr, [sp, #S_PC] @ Get PC - add sp, sp, #S_FRAME_SIZE - subs pc, lr, #4 @ return & move spsr_svc into cpsr - .endm - - .macro get_bad_stack - ldr r13, IRQ_STACK_START_IN @ setup our mode stack - - str lr, [r13] @ save caller lr / spsr - mrs lr, spsr - str lr, [r13, #4] - - mov r13, #MODE_SVC @ prepare SVC-Mode - msr spsr_c, r13 - mov lr, pc - movs pc, lr - .endm - - .macro get_irq_stack @ setup IRQ stack - ldr sp, IRQ_STACK_START - .endm - - .macro get_fiq_stack @ setup FIQ stack - ldr sp, FIQ_STACK_START - .endm - - -/****************************************************************************/ -/* */ -/* exception handlers */ -/* */ -/****************************************************************************/ - - .align 5 -undefined_instruction: - get_bad_stack - bad_save_user_regs - bl do_undefined_instruction - - .align 5 -software_interrupt: - get_bad_stack - bad_save_user_regs - bl do_software_interrupt - - .align 5 -prefetch_abort: - get_bad_stack - bad_save_user_regs - bl do_prefetch_abort - - .align 5 -data_abort: - get_bad_stack - bad_save_user_regs - bl do_data_abort - - .align 5 -not_used: - get_bad_stack - bad_save_user_regs - bl do_not_used - -#ifdef CONFIG_USE_IRQ - - .align 5 -irq: - get_irq_stack - irq_save_user_regs - bl do_irq - irq_restore_user_regs - - .align 5 -fiq: - get_fiq_stack - irq_save_user_regs /* someone ought to write a more */ - bl do_fiq /* effiction fiq_save_user_regs */ - irq_restore_user_regs - -#else - - .align 5 -irq: - get_bad_stack - bad_save_user_regs - bl do_irq - - .align 5 -fiq: - get_bad_stack - bad_save_user_regs - bl do_fiq - -#endif - -/****************************************************************************/ -/* */ -/* Reset function: Use Watchdog to reset */ -/* */ -/****************************************************************************/ - - .align 5 -.globl reset_cpu - -reset_cpu: - ldr r1, =0x482e - ldr r2, =IXP425_OSWK - str r1, [r2] - ldr r1, =0x0fff - ldr r2, =IXP425_OSWT - str r1, [r2] - ldr r1, =0x5 - ldr r2, =IXP425_OSWE - str r1, [r2] - b reset_endless - -reset_endless: - b reset_endless diff --git a/arch/arm/cpu/ixp/timer.c b/arch/arm/cpu/ixp/timer.c deleted file mode 100644 index 38e2e2879c..0000000000 --- a/arch/arm/cpu/ixp/timer.c +++ /dev/null @@ -1,101 +0,0 @@ -/* - * (C) Copyright 2010 - * Michael Schwingen, michael@schwingen.org - * - * (C) Copyright 2006 - * Stefan Roese, DENX Software Engineering, sr@denx.de. - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Marius Groeger <mgroeger@sysgo.de> - * - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Alex Zuepke <azu@sysgo.de> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/arch/ixp425.h> -#include <asm/io.h> -#include <div64.h> - -DECLARE_GLOBAL_DATA_PTR; - -/* - * The IXP42x time-stamp timer runs at 2*OSC_IN (66.666MHz when using a - * 33.333MHz crystal). - */ -static inline unsigned long long tick_to_time(unsigned long long tick) -{ - tick *= CONFIG_SYS_HZ; - do_div(tick, CONFIG_IXP425_TIMER_CLK); - return tick; -} - -static inline unsigned long long time_to_tick(unsigned long long time) -{ - time *= CONFIG_IXP425_TIMER_CLK; - do_div(time, CONFIG_SYS_HZ); - return time; -} - -static inline unsigned long long us_to_tick(unsigned long long us) -{ - us = us * CONFIG_IXP425_TIMER_CLK + 999999; - do_div(us, 1000000); - return us; -} - -unsigned long long get_ticks(void) -{ - ulong now = readl(IXP425_OSTS_B); - - if (readl(IXP425_OSST) & IXP425_OSST_TIMER_TS_PEND) { - /* rollover of timestamp timer register */ - gd->arch.timestamp += (0xFFFFFFFF - gd->arch.lastinc) + now + 1; - writel(IXP425_OSST_TIMER_TS_PEND, IXP425_OSST); - } else { - /* move stamp forward with absolut diff ticks */ - gd->arch.timestamp += (now - gd->arch.lastinc); - } - gd->arch.lastinc = now; - return gd->arch.timestamp; -} - - -void reset_timer_masked(void) -{ - /* capture current timestamp counter */ - gd->arch.lastinc = readl(IXP425_OSTS_B); - /* start "advancing" time stamp from 0 */ - gd->arch.timestamp = 0; -} - -ulong get_timer_masked(void) -{ - return tick_to_time(get_ticks()); -} - -ulong get_timer(ulong base) -{ - return get_timer_masked() - base; -} - -/* delay x useconds AND preserve advance timestamp value */ -void __udelay(unsigned long usec) -{ - unsigned long long tmp; - - tmp = get_ticks() + us_to_tick(usec); - - while (get_ticks() < tmp) - ; -} - -int timer_init(void) -{ - writel(IXP425_OSST_TIMER_TS_PEND, IXP425_OSST); - return 0; -} diff --git a/arch/arm/cpu/ixp/u-boot.lds b/arch/arm/cpu/ixp/u-boot.lds deleted file mode 100644 index 676ae2c4f9..0000000000 --- a/arch/arm/cpu/ixp/u-boot.lds +++ /dev/null @@ -1,91 +0,0 @@ -/* - * (C) Copyright 2000-2006 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -OUTPUT_FORMAT("elf32-bigarm", "elf32-bigarm", "elf32-bigarm") -OUTPUT_ARCH(arm) -ENTRY(_start) -SECTIONS -{ - . = 0x00000000; - - . = ALIGN(4); - .text : - { - *(.__image_copy_start) - arch/arm/cpu/ixp/start.o(.text*) - *(.text*) - } - - . = ALIGN(4); - .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) } - - . = ALIGN(4); - .data : { - *(.data*) - } - - . = ALIGN(4); - - . = .; - - . = ALIGN(4); - .u_boot_list : { - KEEP(*(SORT(.u_boot_list*))); - } - - . = ALIGN(4); - - .image_copy_end : - { - *(.__image_copy_end) - } - - .rel_dyn_start : - { - *(.__rel_dyn_start) - } - - .rel.dyn : { - *(.rel*) - } - - .rel_dyn_end : - { - *(.__rel_dyn_end) - } - - _end = .; - -/* - * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c - * __bss_base and __bss_limit are for linker only (overlay ordering) - */ - - .bss_start __rel_dyn_start (OVERLAY) : { - KEEP(*(.__bss_start)); - __bss_base = .; - } - - .bss __bss_base (OVERLAY) : { - *(.bss*) - . = ALIGN(4); - __bss_limit = .; - } - .bss_end __bss_limit (OVERLAY) : { - KEEP(*(.__bss_end)); - } - - .dynsym _end : { *(.dynsym) } - .dynbss : { *(.dynbss) } - .dynstr : { *(.dynstr*) } - .dynamic : { *(.dynamic*) } - .hash : { *(.hash*) } - .plt : { *(.plt*) } - .interp : { *(.interp*) } - .gnu : { *(.gnu*) } - .ARM.exidx : { *(.ARM.exidx*) } -} |