diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/psim/startup')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/psim/startup/bspstart.c | 105 | ||||
| -rw-r--r-- | c/src/lib/libbsp/powerpc/psim/startup/linkcmds | 94 | ||||
| -rw-r--r-- | c/src/lib/libbsp/powerpc/psim/startup/setvec.c | 56 |
3 files changed, 156 insertions, 99 deletions
diff --git a/c/src/lib/libbsp/powerpc/psim/startup/bspstart.c b/c/src/lib/libbsp/powerpc/psim/startup/bspstart.c index 87403907e4..582b116ca9 100644 --- a/c/src/lib/libbsp/powerpc/psim/startup/bspstart.c +++ b/c/src/lib/libbsp/powerpc/psim/startup/bspstart.c @@ -16,11 +16,31 @@ #include <string.h> #include <fcntl.h> - #include <bsp.h> +#include <bsp/irq.h> #include <rtems/libio.h> #include <rtems/libcsupport.h> #include <rtems/bspIo.h> +#include <libcpu/cpuIdent.h> +#include <libcpu/spr.h> + +SPR_RW(SPRG0) +SPR_RW(SPRG1) + + +extern unsigned long __rtems_end[]; + +void initialize_exceptions(void); + +/* On psim, each click of the decrementer register corresponds + * to 1 instruction. By setting this to 100, we are indicating + * that we are assuming it can execute 100 instructions per + * microsecond. This corresponds to sustaining 1 instruction + * per cycle at 100 Mhz. Whether this is a good guess or not + * is anyone's guess. + */ + +extern int PSIM_INSTRUCTIONS_PER_MICROSECOND; /* * The original table from the application and our copy of it with @@ -29,9 +49,7 @@ extern rtems_configuration_table Configuration; rtems_configuration_table BSP_Configuration; - rtems_cpu_table Cpu_table; -uint32_t bsp_isr_level; /* * Tells us where to put the workspace in case remote debugger is present. @@ -42,6 +60,17 @@ extern uint32_t rdb_start; #endif /* + * PCI Bus Frequency + */ + unsigned int BSP_bus_frequency; + /* + * * Time base divisior (how many tick for 1 second). + * */ + unsigned int BSP_time_base_divisor; + + + +/* * Use the shared implementations of the following routines */ @@ -49,6 +78,25 @@ void bsp_postdriver_hook(void); void bsp_libc_init( void *, uint32_t, int ); /* + * system init stack and soft ir stack size + */ +#define INIT_STACK_SIZE 0x1000 +#define INTR_STACK_SIZE CONFIGURE_INTERRUPT_STACK_MEMORY + + +void BSP_panic(char *s) +{ + printk("%s PANIC %s\n",_RTEMS_version, s); + __asm__ __volatile ("sc"); +} + +void _BSP_Fatal_error(unsigned int v) +{ + printk("%s PANIC ERROR %x\n",_RTEMS_version, v); + __asm__ __volatile ("sc"); +} + +/* * bsp_pretasking_hook * * BSP pretasking hook. Called just before drivers are initialized. @@ -84,16 +132,14 @@ void bsp_pretasking_hook(void) void bsp_start( void ) { - unsigned char *work_space_start; + unsigned char *work_space_start; + register uint32_t intrStack; + register uint32_t *intrStackPtr; -#if 0 /* - * Set MSR to show vectors at 0 XXX + * Note we can not get CPU identification dynamically, so force current_ppc_cpu. */ - _CPU_MSR_Value( msr_value ); - msr_value &= ~PPC_MSR_EP; - _CPU_MSR_SET( msr_value ); -#endif + current_ppc_cpu = PPC_PSIM; /* * Set up our hooks @@ -118,11 +164,14 @@ void bsp_start( void ) Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY; + BSP_bus_frequency = (unsigned int)&PSIM_INSTRUCTIONS_PER_MICROSECOND; + BSP_time_base_divisor = 1; + /* - * The monitor likes the exception table to be at 0x0. + * The simulator likes the exception table to be at 0xfff00000. */ - Cpu_table.exceptions_in_RAM = TRUE; + Cpu_table.exceptions_in_RAM = FALSE; BSP_Configuration.work_space_size += 1024; @@ -136,4 +185,36 @@ void bsp_start( void ) BSP_Configuration.work_space_start = work_space_start; + /* + * Initialize the interrupt related settings + * SPRG1 = software managed IRQ stack + * + * This could be done latter (e.g in IRQ_INIT) but it helps to understand + * some settings below... + */ + intrStack = ((uint32_t) __rtems_end) + + INIT_STACK_SIZE + INTR_STACK_SIZE - CPU_MINIMUM_STACK_FRAME_SIZE; + + /* make sure it's properly aligned */ + intrStack &= ~(CPU_STACK_ALIGNMENT-1); + + /* tag the bottom (T. Straumann 6/36/2001 <strauman@slac.stanford.edu>) */ + intrStackPtr = (uint32_t*) intrStack; + *intrStackPtr = 0; + + _write_SPRG1(intrStack); + + /* signal them that we have fixed PR288 - eventually, this should go away */ + _write_SPRG0(PPC_BSP_HAS_FIXED_PR288); + + /* + * Initialize default raw exception hanlders. See vectors/vectors_init.c + */ + initialize_exceptions(); + + /* + * Initalize RTEMS IRQ system + */ + BSP_rtems_irq_mng_init(0); + } diff --git a/c/src/lib/libbsp/powerpc/psim/startup/linkcmds b/c/src/lib/libbsp/powerpc/psim/startup/linkcmds index e16a2450ce..bf5384ba5c 100644 --- a/c/src/lib/libbsp/powerpc/psim/startup/linkcmds +++ b/c/src/lib/libbsp/powerpc/psim/startup/linkcmds @@ -16,7 +16,7 @@ OUTPUT_ARCH(powerpc) ENTRY(_start) /* Do we need any of these for elf? __DYNAMIC = 0; */ -PROVIDE (PSIM_INSTRUCTIONS_PER_MICROSECOND = 100); +PROVIDE (PSIM_INSTRUCTIONS_PER_MICROSECOND = 10000); /* 100); */ PROVIDE (CPU_PPC_CLICKS_PER_MS = 16667); MEMORY { @@ -26,35 +26,55 @@ MEMORY SECTIONS { - .vectors 0xFFF00100 : + .entry_point_section : { - *(.vectors) - } >EPROM + *(.entry_point_section) + } > EPROM /* Read-only sections, merged into text segment: */ /* . = 0x40000 + SIZEOF_HEADERS; */ . = 0x4000; - .interp : { *(.interp) } - .hash : { *(.hash) } - .dynsym : { *(.dynsym) } - .dynstr : { *(.dynstr) } - .rela.text : { *(.rela.text) } - .rela.data : { *(.rela.data) } - .rela.rodata : { *(.rela.rodata) } - .rela.got : { *(.rela.got) } - .rela.got1 : { *(.rela.got1) } - .rela.got2 : { *(.rela.got2) } - .rela.ctors : { *(.rela.ctors) } - .rela.dtors : { *(.rela.dtors) } - .rela.init : { *(.rela.init) } - .rela.fini : { *(.rela.fini) } - .rela.bss : { *(.rela.bss) } - .rela.plt : { *(.rela.plt) } - .rela.sdata : { *(.rela.sdata2) } - .rela.sbss : { *(.rela.sbss2) } - .rela.sdata2 : { *(.rela.sdata2) } - .rela.sbss2 : { *(.rela.sbss2) } - .plt : { *(.plt) } + .interp : { *(.interp) } + .hash : { *(.hash) } + .dynsym : { *(.dynsym) } + .dynstr : { *(.dynstr) } + .gnu.version : { *(.gnu.version) } + .gnu.version_d : { *(.gnu.version_d) } + .gnu.version_r : { *(.gnu.version_r) } + .rel.init : { *(.rel.init) } + .rela.init : { *(.rela.init) } + .rel.text : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) } + .rela.text : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) } + .rel.fini : { *(.rel.fini) } + .rela.fini : { *(.rela.fini) } + .rel.rodata : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) } + .rela.rodata : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) } + .rel.data : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) } + .rela.data : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) } + .rel.tdata : { *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) } + .rela.tdata : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) } + .rel.tbss : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) } + .rela.tbss : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) } + .rel.ctors : { *(.rel.ctors) } + .rela.ctors : { *(.rela.ctors) } + .rel.dtors : { *(.rel.dtors) } + .rela.dtors : { *(.rela.dtors) } + .rel.got : { *(.rel.got) } + .rela.got : { *(.rela.got) } + .rela.got1 : { *(.rela.got1) } + .rela.got2 : { *(.rela.got2) } + .rel.sdata : { *(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*) } + .rela.sdata : { *(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*) } + .rel.sbss : { *(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*) } + .rela.sbss : { *(.rela.sbss .rela.sbss.* .rela.gnu.linkonce.sb.*) } + .rel.sdata2 : { *(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*) } + .rela.sdata2 : { *(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*) } + .rel.sbss2 : { *(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*) } + .rela.sbss2 : { *(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*) } + .rel.bss : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) } + .rela.bss : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) } + .rel.plt : { *(.rel.plt) } + .rela.plt : { *(.rela.plt) } .text : { *(.text) @@ -74,17 +94,27 @@ SECTIONS /* .gnu.warning sections are handled specially by elf32.em. */ *(.gnu.warning) } >RAM - .init : { _init = .; __init = .; *(.init) } >RAM - .fini : { _fini = .; __fini = .; *(.fini) } >RAM + .init : + { + KEEP (*(.init)) + } >RAM =0 + .fini : + { + _fini = .; + KEEP (*(.fini)) + } >RAM =0 .rodata : { *(.rodata*) *(.gnu.linkonce.r*) } >RAM .rodata1 : { *(.rodata1) } >RAM + PROVIDE (__FRAME_BEGIN__ = .); .eh_frame : { *.(eh_frame) } >RAM + PROVIDE (__FRAME_END__ = .); PROVIDE (_etext = .); PROVIDE (etext = .); PROVIDE (__SDATA2_START__ = .); .sdata2 : { *(.sdata2) *(.gnu.linkonce.s2.*) } >RAM .sbss2 : { *(.sbss2) *(.gnu.linkonce.sb2.*) } >RAM PROVIDE (__SBSS2_END__ = .); + /* .eh_frame_hdr : { *(.eh_frame_hdr) } >RAM */ /* Adjust the address for the data segment. We want to adjust up to the same address within the page on the next page up. It would be more correct to do this: @@ -135,6 +165,8 @@ SECTIONS PROVIDE (_FIXUP_END_ = .); PROVIDE (__FIXUP_END__ = .); + .jcr : { KEEP (*(.jcr)) } > RAM + PROVIDE (__GOT_START__ = .); PROVIDE (_GOT_START_ = .); s.got = .; @@ -155,9 +187,8 @@ SECTIONS .sbss : { PROVIDE (__sbss_start = .); - *(.sbss) - *(.scommon) - *(.gnu.linkonce.sb.*) + *(.dynsbss) + *(.sbss .sbss.* .gnu.linkonce.sb.*) PROVIDE (__sbss_end = .); } >RAM PROVIDE (__SBSS_END__ = .); @@ -166,10 +197,11 @@ SECTIONS { PROVIDE (__bss_start = .); *(.dynbss) - *(.bss) + *(.bss .bss.* .gnu.linkonce.b.*) *(COMMON) } >RAM . = ALIGN(8) + 0x8000; + __rtems_end = . ; PROVIDE(__stack = .); PROVIDE(_end = .); PROVIDE(end = .); diff --git a/c/src/lib/libbsp/powerpc/psim/startup/setvec.c b/c/src/lib/libbsp/powerpc/psim/startup/setvec.c deleted file mode 100644 index 21503ac17f..0000000000 --- a/c/src/lib/libbsp/powerpc/psim/startup/setvec.c +++ /dev/null @@ -1,56 +0,0 @@ -/* set_vector - * - * This routine installs an interrupt vector on the target Board/CPU. - * This routine is allowed to be as board dependent as necessary. - * - * INPUT: - * handler - interrupt handler entry point - * vector - vector number - * type - 0 indicates raw hardware connect - * 1 indicates RTEMS interrupt connect - * - * RETURNS: - * address of previous interrupt handler - * - * Author: Andrew Bray <andy@i-cubed.co.uk> - * - * COPYRIGHT (c) 1995 by i-cubed ltd. - * - * To anyone who acknowledges that this file is provided "AS IS" - * without any express or implied warranty: - * permission to use, copy, modify, and distribute this file - * for any purpose is hereby granted without fee, provided that - * the above copyright notice and this notice appears in all - * copies, and that the name of i-cubed limited not be used in - * advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. - * i-cubed limited makes no representations about the suitability - * of this software for any purpose. - * - * Derived from c/src/lib/libbsp/no_cpu/no_bsp/startup/setvec.c: - * - * COPYRIGHT (c) 1989-1999. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may be - * found in found in the file LICENSE in this distribution or at - * http://www.rtems.com/license/LICENSE. - * - * $Id$ - */ - -#include <rtems.h> -#include <bsp.h> - -rtems_isr_entry set_vector( /* returns old vector */ - rtems_isr_entry handler, /* isr routine */ - rtems_vector_number vector, /* vector number */ - int type /* RTEMS or RAW intr */ -) -{ - rtems_isr_entry previous_isr; - - rtems_interrupt_catch( handler, vector, (rtems_isr_entry *) &previous_isr ); - - return previous_isr; -} |