/*
* This routine does the bulk of the system initialization.
*/
/*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* Modified to support the MCP750.
* Modifications Copyright (C) 1999 Eric Valette. valette@crf.canon.fr
*
* Modified to support the Synergy VGM & Motorola PowerPC boards.
* (C) by Till Straumann, <strauman@slac.stanford.edu>, 2002, 2004, 2005
*
* Modified to support the mvme5500 BSP
* (C) by Kate Feng <feng1@bnl.gov>, 2003, 2004
* under the contract DE-AC02-98CH10886 with the Deaprtment of Energy
*
* T. Straumann: 2005-2007; stolen again for 'beatnik'...
*/
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <rtems/libio.h>
#include <rtems/libcsupport.h>
#include <rtems/bspIo.h>
#include <rtems/counter.h>
#include <rtems/powerpc/powerpc.h>
#include <rtems/sysinit.h>
/*#include <bsp/consoleIo.h>*/
#include <libcpu/spr.h> /* registers.h is included here */
#include <bsp.h>
#include <bsp/bootcard.h>
#include <bsp/uart.h>
#include <bsp/pci.h>
#include <bsp/gtreg.h>
#include <bsp/gt_timer.h>
#include <libcpu/bat.h>
#include <libcpu/pte121.h>
#include <libcpu/cpuIdent.h>
#include <bsp/vectors.h>
#include <bsp/VME.h>
#include <bsp/vpd.h>
#define SHOW_MORE_INIT_SETTINGS
BSP_output_char_function_type BSP_output_char = BSP_output_char_via_serial;
BSP_polling_getchar_function_type BSP_poll_char = NULL;
extern Triv121PgTbl BSP_pgtbl_setup(unsigned int *);
extern void BSP_pgtbl_activate(Triv121PgTbl);
extern void BSP_motload_pci_fixup(void);
extern unsigned long __rtems_end[];
/* We really shouldn't use these since MMUoff also sets IP;
* nevertheless, during early init I don't care for now
*/
extern void MMUoff(void);
extern void MMUon(void);
extern uint32_t probeMemoryEnd(void);
SPR_RW(SPRG0)
SPR_RW(SPRG1)
SPR_RO(HID1)
/* Table of PLL multipliers for 7455/7457:
01000 2 00010 7.5 00000 11.5 00001 17
10000 3 11000 8 10111 12 00101 18
10100 4 01100 8.5 11111 12.5 00111 20
10110 5 01111 9 01011 13 01001 21
10010 5.5 01110 9.5 11100 13.5 01101 24
11010 6 10101 10 11001 14 11101 28
01010 6.5 10001 10.5 00011 15 00110 bypass
00100 7 10011 11 11011 16 11110 off
*/
/* Sorted according to CFG bits and multiplied by 2 it looks
* like this (note that this is in sequential order, not
* tabulated as above)
*/
signed char mpc7450PllMultByTwo[32] = {
23, 34, 15, 30,
14, 36, 2/*bypass*/, 40,
4, 42, 13, 26,
17, 48, 19, 18,
6, 21, 11, 22,
8, 20, 10, 24,
16, 28, 12, 32,
27, 56, 0/*off*/, 25,
};
uint32_t bsp_clicks_per_usec = 0;
/*
* Total memory using probing.
*/
unsigned int BSP_mem_size;
/*
* PCI Bus Frequency
*/
unsigned int BSP_bus_frequency = 0xdeadbeef;
/*
* processor clock frequency
*/
unsigned int BSP_processor_frequency = 0xdeadbeef;
/*
* Time base divisior (bus freq / TB clock)
*/
unsigned int BSP_time_base_divisor = 4000; /* most 604+ CPUs seem to use this */
/* Board identification string */
char BSP_productIdent[20] = {0};
char BSP_serialNumber[20] = {0};
/* VPD appends an extra char -- what for ? */
char BSP_enetAddr0[7] = {0};
char BSP_enetAddr1[7] = {0};
char *rtems_progname;
#define CMDLINE_BUF_SIZE 2048
static char cmdline_buf[CMDLINE_BUF_SIZE];
char *BSP_commandline_string = cmdline_buf;
/* this routine is called early and must be safe with a not properly
* aligned stack
*/
char *save_boot_params(
void *r3,
void *r4,
void *r5,
char *cmdline_start,
char *cmdline_end
)
{
int i=cmdline_end-cmdline_start;
if ( i >= CMDLINE_BUF_SIZE )
i = CMDLINE_BUF_SIZE-1;
else if ( i < 0 )
i = 0;
memmove(cmdline_buf, cmdline_start, i);
cmdline_buf[i]=0;
return cmdline_buf;
}
static BSP_BoardType board_type = Unknown;
BSP_BoardType
BSP_getBoardType( void )
{
return board_type;
}
uint32_t _CPU_Counter_frequency(void)
{
return BSP_bus_frequency / (BSP_time_base_divisor / 1000);
}
static void bsp_early( void )
{
unsigned char *stack;
char *chpt;
Triv121PgTbl pt=0;
VpdBufRec vpdData [] = {
{ key: ProductIdent, instance: 0, buf: BSP_productIdent, buflen: sizeof(BSP_productIdent) - 1 },
{ key: SerialNumber, instance: 0, buf: BSP_serialNumber, buflen: sizeof(BSP_serialNumber) - 1 },
{ key: CpuClockHz, instance: 0, buf: &BSP_processor_frequency, buflen: sizeof(BSP_processor_frequency) },
{ key: BusClockHz, instance: 0, buf: &BSP_bus_frequency, buflen: sizeof(BSP_bus_frequency) },
{ key: EthernetAddr, instance: 0, buf: BSP_enetAddr0, buflen: sizeof(BSP_enetAddr0) },
{ key: EthernetAddr, instance: 1, buf: BSP_enetAddr1, buflen: sizeof(BSP_enetAddr1) },
VPD_END
};
/* T. Straumann: 4/2005
*
* Need to map the system registers early, so we can printk...
* (otherwise we silently die)
*/
/* map the PCI 0, 1 Domain I/O space, GT64260B registers
* and the reserved area so that the size is the power of 2.
*/
setdbat(7, BSP_DEV_AND_PCI_IO_BASE, BSP_DEV_AND_PCI_IO_BASE, BSP_DEV_AND_PCI_IO_SIZE, IO_PAGE);
/* Intersperse messages with actions to help locate problems */
printk("-----------------------------------------\n");
/*
* Get CPU identification dynamically. Note that the get_ppc_cpu_type() & friends functions
* store the result in global variables so that it can be used latter...
* This also verifies that we run on a known CPU.
*/
get_ppc_cpu_type();
get_ppc_cpu_revision();
/* Make sure we detect a known host bridge */
BSP_getDiscoveryVersion(/* assert detection */ 1);
printk("Welcome to RTEMS %s\n", rtems_get_version_string() );
/* Leave all caches as MotLoad left them. Seems to be fine */
/*
* the initial stack has aready been set to this value in start.S
* so there is no need to set it in r1 again... It is just for info
* so that it can be printed without accessing R1.
*/
__asm__ volatile("mr %0, 1":"=r"(stack));
/* tag the bottom (T. Straumann 6/36/2001 <strauman@slac.stanford.edu>) */
*((uint32_t *)stack) = 0;
ppc_exc_initialize();
printk("CPU: %s\n", get_ppc_cpu_type_name(current_ppc_cpu));
/*
* Initialize RTEMS IRQ system
*/
BSP_rtems_irq_mng_init(0);
BSP_vpdRetrieveFields(vpdData);
if ( !strncmp(BSP_productIdent,"MVME5500",8) )
board_type = MVME5500;
else if ( !strncmp(BSP_productIdent,"MVME6100",8) )
board_type = MVME6100;
printk("Board Type: %s (S/N %s)\n",
BSP_productIdent[0] ? BSP_productIdent : "n/a",
BSP_serialNumber[0] ? BSP_serialNumber : "n/a");
if ( 0xdeadbeef == BSP_bus_frequency ) {
BSP_bus_frequency = 133333333;
printk("Bus Clock Freq NOT FOUND in VPD; using %10u Hz\n",
BSP_bus_frequency);
} else {
printk("Bus Clock Freq: %10u Hz\n",
BSP_bus_frequency);
}
if ( 0xdeadbeef == BSP_processor_frequency ) {
BSP_processor_frequency = BSP_bus_frequency/2;
BSP_processor_frequency *= mpc7450PllMultByTwo[ (_read_HID1() >> (31-19)) & 31 ];
}
printk("CPU Clock Freq: %10u Hz\n", BSP_processor_frequency);
/* probe real memory size; if it's more than 256M we can't currently access it
* since at this point only BAT-0 maps 0..256M
*/
BSP_mem_size = probeMemoryEnd();
if ( (chpt = strstr(BSP_commandline_string,"MEMSZ=")) ) {
char *endp;
uint32_t sz;
chpt+=6 /* strlen("MEMSZ=") */;
sz = strtoul(chpt, &endp, 0);
if ( endp != chpt )
BSP_mem_size = sz;
}
printk("Memory: %10u bytes\n", BSP_mem_size);
if ( BSP_mem_size > 0x10000000 ) {
uint32_t s;
if ( BSP_mem_size > 0x80000000 ) {
BSP_mem_size = 0x80000000;
printk("Memory clipped to 0x%08x for now, sorry\n", BSP_mem_size);
}
for ( s = 0x20000000; s < BSP_mem_size ; s<<=1)
;
MMUoff();
/* since it's currently in use we must first surrender it */
setdbat(0, 0, 0, 0, 0);
setdbat(0, 0, 0, s, _PAGE_RW);
MMUon();
}
printk("-----------------------------------------\n");
/* Maybe not setup yet because of the warning message */
/* Allocate and set up the page table mappings
* This is only available on >604 CPUs.
*
* NOTE: This setup routine may modify the available memory
* size. It is essential to call it before
* calculating the workspace etc.
*/
pt = BSP_pgtbl_setup(&BSP_mem_size);
if (!pt)
printk("WARNING: unable to setup page tables.\n");
#ifdef SHOW_MORE_INIT_SETTINGS
printk("Now BSP_mem_size = 0x%x\n",BSP_mem_size);
#endif
/*
* Set up our hooks
*/
bsp_clicks_per_usec = BSP_bus_frequency/(BSP_time_base_divisor * 1000);
#ifdef SHOW_MORE_INIT_SETTINGS
printk(
"Configuration.work_space_size = %x\n",
rtems_configuration_get_work_space_size()
);
#endif
/* Activate the page table mappings only after
* initializing interrupts because the irq_mng_init()
* routine needs to modify the text
*/
if ( pt ) {
#ifdef SHOW_MORE_INIT_SETTINGS
printk("Page table setup finished; will activate it NOW...\n");
#endif
BSP_pgtbl_activate(pt);
}
#ifdef SHOW_MORE_INIT_SETTINGS
printk("Going to start PCI buses scanning and initialization\n");
#endif
BSP_pci_initialize();
/* need to tweak the motload setup */
BSP_motload_pci_fixup();
/* map 512M, 256 for PCI 256 for VME */
setdbat(5,BSP_PCI_HOSE0_MEM_BASE, BSP_PCI_HOSE0_MEM_BASE, BSP_PCI_HOSE0_MEM_SIZE, IO_PAGE);
setdbat(6,BSP_PCI_HOSE1_MEM_BASE, BSP_PCI_HOSE1_MEM_BASE, 0x10000000, IO_PAGE);
#ifdef SHOW_MORE_INIT_SETTINGS
printk("Number of PCI buses found is : %d\n", pci_bus_count());
#endif
/*
* Initialize hardware timer facility (not used by BSP itself)
* Needs PCI to identify discovery version...
*/
BSP_timers_initialize();
#ifdef SHOW_MORE_INIT_SETTINGS
printk("MSR 0x%lx \n", _read_MSR());
printk("Exit from bspstart\n");
#endif
}
RTEMS_SYSINIT_ITEM(
bsp_early,
RTEMS_SYSINIT_BSP_EARLY,
RTEMS_SYSINIT_ORDER_MIDDLE
);
void bsp_start( void )
{
/* Initialization was done by bsp_early() */
}
RTEMS_SYSINIT_ITEM(
BSP_vme_config,
RTEMS_SYSINIT_BSP_PRE_DRIVERS,
RTEMS_SYSINIT_ORDER_MIDDLE
);
