Merge pull request #1457 from zhuangwei123/master

[bsp/ls1cdev]添加自引导特性,添加配置选项
This commit is contained in:
Bernard Xiong 2018-05-20 11:08:26 +08:00 committed by GitHub
commit 1ad1bd3c37
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GPG Key ID: 4AEE18F83AFDEB23
11 changed files with 661 additions and 130 deletions

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@ -228,20 +228,6 @@ CONFIG_LWIP_NETIF_LOOPBACK=0
# RT-Thread online packages # RT-Thread online packages
# #
#
# system packages
#
#
# RT-Thread GUI Engine
#
# CONFIG_PKG_USING_GUIENGINE is not set
# CONFIG_PKG_USING_LVGL is not set
# CONFIG_PKG_USING_LWEXT4 is not set
# CONFIG_PKG_USING_PARTITION is not set
# CONFIG_PKG_USING_SQLITE is not set
# CONFIG_PKG_USING_RTI is not set
# #
# IoT - internet of things # IoT - internet of things
# #
@ -271,6 +257,7 @@ CONFIG_LWIP_NETIF_LOOPBACK=0
# CONFIG_PKG_USING_COAP is not set # CONFIG_PKG_USING_COAP is not set
# CONFIG_PKG_USING_NOPOLL is not set # CONFIG_PKG_USING_NOPOLL is not set
# CONFIG_PKG_USING_NETUTILS is not set # CONFIG_PKG_USING_NETUTILS is not set
# CONFIG_PKG_USING_ONENET is not set
# #
# security packages # security packages
@ -289,6 +276,7 @@ CONFIG_LWIP_NETIF_LOOPBACK=0
# multimedia packages # multimedia packages
# #
# CONFIG_PKG_USING_OPENMV is not set # CONFIG_PKG_USING_OPENMV is not set
# CONFIG_PKG_USING_MUPDF is not set
# #
# tools packages # tools packages
@ -299,6 +287,26 @@ CONFIG_LWIP_NETIF_LOOPBACK=0
# CONFIG_PKG_USING_SYSTEMVIEW is not set # CONFIG_PKG_USING_SYSTEMVIEW is not set
# CONFIG_PKG_USING_IPERF is not set # CONFIG_PKG_USING_IPERF is not set
#
# system packages
#
#
# RT-Thread GUI Engine
#
# CONFIG_PKG_USING_GUIENGINE is not set
# CONFIG_PKG_USING_LWEXT4 is not set
# CONFIG_PKG_USING_PARTITION is not set
# CONFIG_PKG_USING_SQLITE is not set
# CONFIG_PKG_USING_RTI is not set
# CONFIG_PKG_USING_LITTLEVGL2RTT is not set
#
# peripheral libraries and drivers
#
# CONFIG_PKG_USING_STM32F4_HAL is not set
# CONFIG_PKG_USING_STM32F4_DRIVERS is not set
# #
# miscellaneous packages # miscellaneous packages
# #
@ -306,13 +314,18 @@ CONFIG_LWIP_NETIF_LOOPBACK=0
# CONFIG_PKG_USING_MINILZO is not set # CONFIG_PKG_USING_MINILZO is not set
# CONFIG_PKG_USING_QUICKLZ is not set # CONFIG_PKG_USING_QUICKLZ is not set
# CONFIG_PKG_USING_MULTIBUTTON is not set # CONFIG_PKG_USING_MULTIBUTTON is not set
# CONFIG_PKG_USING_SAMPLES is not set
# CONFIG_PKG_USING_CANFESTIVAL is not set # CONFIG_PKG_USING_CANFESTIVAL is not set
#
# sample package
#
# CONFIG_PKG_USING_SAMPLES is not set
# #
# example package: hello # example package: hello
# #
# CONFIG_PKG_USING_HELLO is not set # CONFIG_PKG_USING_HELLO is not set
# CONFIG_RT_USING_SELF_BOOT is not set
CONFIG_RT_USING_UART2=y CONFIG_RT_USING_UART2=y
CONFIG_RT_UART_RX_BUFFER_SIZE=64 CONFIG_RT_UART_RX_BUFFER_SIZE=64
CONFIG_RT_USING_GMAC_INT_MODE=y CONFIG_RT_USING_GMAC_INT_MODE=y

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@ -12,6 +12,8 @@ from building import *
TARGET = 'rtthread.' + rtconfig.TARGET_EXT TARGET = 'rtthread.' + rtconfig.TARGET_EXT
rtconfig.AFLAGS += ' -I' + str(Dir('#'))
env = Environment(tools = ['mingw'], env = Environment(tools = ['mingw'],
AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS, AS = rtconfig.AS, ASFLAGS = rtconfig.AFLAGS,
CC = rtconfig.CC, CCFLAGS = rtconfig.CFLAGS, CC = rtconfig.CC, CCFLAGS = rtconfig.CFLAGS,
@ -25,6 +27,13 @@ Export('rtconfig')
# prepare building environment # prepare building environment
objs = PrepareBuilding(env, RTT_ROOT) objs = PrepareBuilding(env, RTT_ROOT)
if GetDepend('RT_USING_SELF_BOOT'):
rtconfig.LFLAGS += " -Ttext 0x80010000"
else:
rtconfig.LFLAGS += " -Ttext 0x80200000"
env.Replace(LINKFLAGS = rtconfig.LFLAGS)
if GetDepend('RT_USING_RTGUI'): if GetDepend('RT_USING_RTGUI'):
objs = objs + SConscript(RTT_ROOT + '/examples/gui/SConscript', variant_dir='build/examples/gui', duplicate=0) objs = objs + SConscript(RTT_ROOT + '/examples/gui/SConscript', variant_dir='build/examples/gui', duplicate=0)

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@ -100,6 +100,9 @@ void rt_hw_board_init(void)
/* init hardware interrupt */ /* init hardware interrupt */
rt_hw_interrupt_init(); rt_hw_interrupt_init();
/* clear bev */
write_c0_status(read_c0_status()&(~(1<<22)));
/* copy vector */ /* copy vector */
rt_memcpy((void *)A_K0BASE, tlb_refill_exception, 0x80); rt_memcpy((void *)A_K0BASE, tlb_refill_exception, 0x80);
rt_memcpy((void *)(A_K0BASE + 0x180), general_exception, 0x80); rt_memcpy((void *)(A_K0BASE + 0x180), general_exception, 0x80);

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@ -31,6 +31,8 @@
#include "mii.c" #include "mii.c"
#include "synopGMAC_debug.h" #include "synopGMAC_debug.h"
#include <ls1c.h> #include <ls1c.h>
#include "ls1c_pin.h"
#define RMII #define RMII
#define Gmac_base 0xbfe10000 #define Gmac_base 0xbfe10000
@ -865,10 +867,22 @@ int rt_hw_eth_init(void)
u64 base_addr = Gmac_base; u64 base_addr = Gmac_base;
struct synopGMACNetworkAdapter * synopGMACadapter; struct synopGMACNetworkAdapter * synopGMACadapter;
static u8 mac_addr0[6] = DEFAULT_MAC_ADDRESS; static u8 mac_addr0[6] = DEFAULT_MAC_ADDRESS;
int index;
rt_sem_init(&sem_ack, "tx_ack", 1, RT_IPC_FLAG_FIFO); rt_sem_init(&sem_ack, "tx_ack", 1, RT_IPC_FLAG_FIFO);
rt_sem_init(&sem_lock, "eth_lock", 1, RT_IPC_FLAG_FIFO); rt_sem_init(&sem_lock, "eth_lock", 1, RT_IPC_FLAG_FIFO);
for(index=21; index<=30;index++)
{
pin_set_purpose(index, PIN_PURPOSE_OTHER);
pin_set_remap(index, PIN_REMAP_DEFAULT);
}
pin_set_purpose(35, PIN_PURPOSE_OTHER);
pin_set_remap(35, PIN_REMAP_DEFAULT);
*((volatile unsigned int *)0xbfd00424) &= ~(7 << 28);
*((volatile unsigned int *)0xbfd00424) |= (1 << 30); //wl rmii
memset(&eth_dev, 0, sizeof(eth_dev)); memset(&eth_dev, 0, sizeof(eth_dev));
synopGMACadapter = (struct synopGMACNetworkAdapter * )plat_alloc_memory(sizeof (struct synopGMACNetworkAdapter)); synopGMACadapter = (struct synopGMACNetworkAdapter * )plat_alloc_memory(sizeof (struct synopGMACNetworkAdapter));

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@ -19,6 +19,10 @@ config $PKGS_DIR
source "$RTT_DIR/Kconfig" source "$RTT_DIR/Kconfig"
source "$PKGS_DIR/Kconfig" source "$PKGS_DIR/Kconfig"
config RT_USING_SELF_BOOT
bool "Enable RT-Thread run without bootloader"
default n
if RT_USING_SERIAL if RT_USING_SERIAL
config RT_USING_UART2 config RT_USING_UART2
bool "Using RT_USING_UART2" bool "Using RT_USING_UART2"

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@ -1,4 +1,4 @@
// 引脚功能(普通gpiopwm复用等)相关接口 // 引脚功能(普通gpiopwm复用等)相关接口
#include "ls1c_public.h" #include "ls1c_public.h"
@ -8,21 +8,21 @@
/* /*
* pin设置为指定用途(gpiogpio) * pin设置为指定用途(gpiogpio)
* @gpio gpio引脚编号 * @gpio gpio引脚编号
* @purpose * @purpose
*/ */
void pin_set_purpose(unsigned int gpio, pin_purpose_t purpose) void pin_set_purpose(unsigned int gpio, pin_purpose_t purpose)
{ {
volatile unsigned int *gpio_cfgx; // GPIO_CFGx寄存器 volatile unsigned int *gpio_cfgx; // GPIO_CFGx寄存器
unsigned int pin = GPIO_GET_PIN(gpio); unsigned int pin = GPIO_GET_PIN(gpio);
gpio_cfgx = gpio_get_cfg_reg(gpio); gpio_cfgx = gpio_get_cfg_reg(gpio);
if (PIN_PURPOSE_GPIO == purpose) // 引脚用作普通gpio if (PIN_PURPOSE_GPIO == purpose) // 引脚用作普通gpio
{ {
reg_set_one_bit(gpio_cfgx, pin); reg_set_one_bit(gpio_cfgx, pin);
} }
else // 引脚用作其它功能(非gpio) else // 引脚用作其它功能(非gpio)
{ {
reg_clr_one_bit(gpio_cfgx, pin); reg_clr_one_bit(gpio_cfgx, pin);
} }
@ -33,25 +33,27 @@ void pin_set_purpose(unsigned int gpio, pin_purpose_t purpose)
/* /*
* pin为第n复用 * pin为第n复用
* @gpio gpio编号 * @gpio gpio编号
* @remap n复用 * @remap n复用
*/ */
void pin_set_remap(unsigned int gpio, pin_remap_t remap) void pin_set_remap(unsigned int gpio, pin_remap_t remap)
{ {
volatile unsigned int *reg = NULL; // 复用寄存器 volatile unsigned int *reg = NULL; // 复用寄存器
unsigned int port = GPIO_GET_PORT(gpio); unsigned int port = GPIO_GET_PORT(gpio);
unsigned int pin = GPIO_GET_PIN(gpio); unsigned int pin = GPIO_GET_PIN(gpio);
int i; int i;
/*指定全部pin复用为0*/ /*指定全部pin复用为0*/
for (i = 0; i <= 4; i++) for (i = 0; i <= 4; i++)
{ {
reg = (volatile unsigned int *)((LS1C_CBUS_FIRST0) + ((port) * 0x04) + ((i) * 0x10)); reg = (volatile unsigned int *)((LS1C_CBUS_FIRST0) + ((port) * 0x04) + ((i) * 0x10));
// 置0 // 置0
reg_clr_one_bit(reg, pin); reg_clr_one_bit(reg, pin);
} }
if (remap == PIN_REMAP_DEFAULT) return;
switch (port) switch (port)
{ {
case 0: case 0:
@ -142,7 +144,7 @@ void pin_set_remap(unsigned int gpio, pin_remap_t remap)
return ; return ;
} }
// 置1 // 置1
reg_set_one_bit(reg, pin); reg_set_one_bit(reg, pin);
return ; return ;

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@ -11,6 +11,7 @@
* Date Author Notes * Date Author Notes
* 2010-05-17 swkyer first version * 2010-05-17 swkyer first version
* 2010-09-04 bernard move the beginning entry to 0x80200000 * 2010-09-04 bernard move the beginning entry to 0x80200000
* 2018-05-12 zhuangwei use -Ttext
*/ */
OUTPUT_ARCH(mips) OUTPUT_ARCH(mips)
@ -19,16 +20,13 @@ GROUP(-lgcc -lc)
ENTRY(_start) ENTRY(_start)
SECTIONS SECTIONS
{ {
. = 0x80200000 ; . = 0x80000000 ;
.start :
{
*(.start);
}
. = ALIGN(4); . = ALIGN(4);
.text : .text :
{ {
start = ABSOLUTE(.);
*(.start);
*(.text) *(.text)
*(.text.*) *(.text.*)
*(.rodata) *(.rodata)

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@ -156,11 +156,6 @@
/* RT-Thread online packages */ /* RT-Thread online packages */
/* system packages */
/* RT-Thread GUI Engine */
/* IoT - internet of things */ /* IoT - internet of things */
@ -184,9 +179,20 @@
/* tools packages */ /* tools packages */
/* system packages */
/* RT-Thread GUI Engine */
/* peripheral libraries and drivers */
/* miscellaneous packages */ /* miscellaneous packages */
/* sample package */
/* example package: hello */ /* example package: hello */
#define RT_USING_UART2 #define RT_USING_UART2

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@ -17,6 +17,8 @@
#include <rtthread.h> #include <rtthread.h>
#include "ls1c.h" #include "ls1c.h"
register rt_uint32_t $GP __asm__ ("$28");
/** /**
* @addtogroup Loongson LS1B * @addtogroup Loongson LS1B
*/ */
@ -68,12 +70,15 @@ rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter, rt_uint8_t *stack_ad
{ {
rt_uint32_t *stk; rt_uint32_t *stk;
static rt_uint32_t g_sr = 0; static rt_uint32_t g_sr = 0;
static rt_uint32_t g_gp = 0;
if (g_sr == 0) if (g_sr == 0)
{ {
g_sr = cp0_get_status(); g_sr = cp0_get_status();
g_sr &= 0xfffffffe; g_sr &= 0xfffffffe;
g_sr |= 0x8401; g_sr |= 0x8401;
g_gp = $GP;
} }
/** Start at stack top */ /** Start at stack top */
@ -87,7 +92,7 @@ rt_uint8_t *rt_hw_stack_init(void *tentry, void *parameter, rt_uint8_t *stack_ad
*(--stk) = (rt_uint32_t) texit; /* ra */ *(--stk) = (rt_uint32_t) texit; /* ra */
*(--stk) = (rt_uint32_t) 0x0000001e; /* s8 */ *(--stk) = (rt_uint32_t) 0x0000001e; /* s8 */
*(--stk) = (rt_uint32_t) stack_addr; /* sp */ *(--stk) = (rt_uint32_t) stack_addr; /* sp */
*(--stk) = (rt_uint32_t) 0x0000001c; /* gp */ *(--stk) = (rt_uint32_t) g_gp; /* gp */
*(--stk) = (rt_uint32_t) 0x0000001b; /* k1 */ *(--stk) = (rt_uint32_t) 0x0000001b; /* k1 */
*(--stk) = (rt_uint32_t) 0x0000001a; /* k0 */ *(--stk) = (rt_uint32_t) 0x0000001a; /* k0 */
*(--stk) = (rt_uint32_t) 0x00000019; /* t9 */ *(--stk) = (rt_uint32_t) 0x00000019; /* t9 */

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@ -0,0 +1,85 @@
#ifndef __OPENLOONGSON_SDRAM_CFG_H
#define __OPENLOONGSON_SDRAM_CFG_H
//#define SD_FREQ (6 * PLL_M) / (2 * SDRAM_PARAM_DIV_NUM)
#define SD_FREQ (((APB_CLK / 4) * (PLL_MULT / CPU_DIV)) / SDRAM_PARAM_DIV_NUM)
/* 颗粒行数 */
#define ROW_1K 0x7
#define ROW_2K 0x0
#define ROW_4K 0x1
#define ROW_8K 0x2
#define ROW_16K 0x3
/* 颗粒列数 */
#define COL_256 0x7
#define COL_512 0x0
#define COL_1K 0x1
#define COL_2K 0x2
#define COL_4K 0x3
/* 颗粒位宽 */
#define WIDTH_8 0x0
#define WIDTH_16 0x1
#define WIDTH_32 0x2
#define TRCD 3
#define TCL 3
#define TRP 3
#define TRFC 8
#define TRAS 6
#define TREF 0x818
#define TWR 2
#define DEF_SEL 0x1
#define DEF_SEL_N 0x0
#define HANG_UP 0x1
#define HANG_UP_N 0x0
#define CFG_VALID 0x1
#if 0
// 白菜板8MB
/*
IS42S16400的SDRAM为例
8MB
16
828256
122124K
=WIDTH_16
=COL_256
=ROW_4K
SD_PARA0和芯片手册中寄存器SD_CONFIG
SD_PARA0中的行宽
*/
#define SDRAM_WIDTH (WIDTH_16)
#define SDRAM_COL (COL_256)
#define SDRAM_ROW (ROW_4K)
#else
// 智龙32MByte
#define SDRAM_WIDTH (WIDTH_16)
#define SDRAM_COL (COL_512)
#define SDRAM_ROW (ROW_8K)
#endif
#define SD_PARA0 (0x7f<<25 | \
(TRAS << 21) | \
(TRFC << 17) | (TRP << 14) | (TCL << 11) | \
(TRCD << 8) | (SDRAM_WIDTH << 6) | (SDRAM_COL << 3) | \
SDRAM_ROW)
#define SD_PARA1 ((HANG_UP_N << 8) | (DEF_SEL_N << 7) | (TWR << 5) | (TREF >> 7))
#define SD_PARA1_EN ((CFG_VALID << 9) | (HANG_UP_N << 8) | \
(DEF_SEL_N << 7) | (TWR << 5) | (TREF >> 7))
#endif

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@ -15,6 +15,34 @@
#include "../common/mips.inc" #include "../common/mips.inc"
#include "../common/stackframe.h" #include "../common/stackframe.h"
#include "sdram_cfg.h"
#include "cache.h"
#include "rtconfig.h"
#define SR_BOOT_EXC_VEC 0x00400000
/* config pll div for cpu and sdram */
#define PLL_MULT (0x54) // 24MhzPLL=504Mhz
#define SDRAM_DIV (0) // SDRAMCPU2
#define CPU_DIV (2) // CPUPLL2
//
#define MEM_SIZE (0x02000000) // 32MByte
/* Delay macro */
#define DELAY(count) \
li v0, count; \
99: \
bnez v0, 99b;\
addiu v0, -1
#define msize s2
#define output_en s3
.section ".start", "ax" .section ".start", "ax"
.set noreorder .set noreorder
@ -25,6 +53,8 @@ _start:
.set noreorder .set noreorder
la ra, _start la ra, _start
#if !defined(RT_USING_SELF_BOOT)
/* disable interrupt */ /* disable interrupt */
mfc0 t0, CP0_STATUS mfc0 t0, CP0_STATUS
and t0, 0xfffffffe # By default it will be disabled. and t0, 0xfffffffe # By default it will be disabled.
@ -57,6 +87,46 @@ _clr_bss_loop:
/* restart, never die */ /* restart, never die */
j _start j _start
nop nop
#else
mtc0 zero, CP0_STATUS // cp0 status
mtc0 zero, CP0_CAUSE // cp0 cause
/*
ROM(0xbfc00000)
cp0 statusBEV1使CPUROM(kseg1)
*/
li t0, SR_BOOT_EXC_VEC /* Exception to Boostrap Location */
mtc0 t0, CP0_STATUS
/* setup stack pointer */
li sp, SYSTEM_STACK
la gp, _gp
/* initialize spi */
li t0, 0xbfe80000 //0xbfe80000SPI0
li t1, 0x17 // div 4, fast_read + burst_en + memory_en double I/O SPI flash
sb t1, 0x4(t0) // sfc_param
li t1, 0x05
sb t1, 0x6(t0) // sfc_timing
/* sdram cs1使ejtag_sel gpio_0()sdram
sw2使ejtagpmon */
li a0, 0xbfd011c0
lw a1, 0x40(a0)
ori a1, 0x01
sw a1, 0x40(a0)
bal locate
nop
/* restart, never die */
j _start
nop
#endif
.set reorder .set reorder
.globl cp0_get_cause .globl cp0_get_cause
@ -83,6 +153,328 @@ cp0_get_lo:
jr ra jr ra
nop nop
#if defined(RT_USING_SELF_BOOT)
/****************************************LOCATE*********************************/
/*
* We get here from executing a bal to get the PC value of the current execute
* location into ra. Check to see if we run from ROM or if this is ramloaded.
* raraROMRAM
* ROMRAM
* RAMCPU
* ROMra"bal locate"80xBFC00000
* RAMra0x80xxxxxx
*/
locate:
// la s0, uncached
// subu s0, ra, s0
/*
* start.sROM0xBFC00000
* 0x80100000
* s0rastart
* s0 link versus load offset, used to relocate absolute adresses
* s0ROMRAM
*/
la s0, _start // s0 = _start start0x80010000
subu s0, ra, s0 // s0 = ra - s0raROM0xBFC00000
and s0, 0xffff0000 // s0 = s0 & 0xffff0000
/*
* cp0statuscause
* (RAM)cp0statuscause
* ROM
*/
li t0, SR_BOOT_EXC_VEC
mtc0 t0, CP0_CONFIG // cp0status
mtc0 zero, CP0_CAUSE // cp0cause
.set noreorder
li t0, 0xbfe78030 // 0xbfe78030PLL/SDRAM
/* 设置PLL倍频 及SDRAM分频 */
li t2, (0x80000008 | (PLL_MULT << 8) | (0x3 << 2) | SDRAM_DIV)
/* 设置CPU分频 */
li t3, (0x00008003 | (CPU_DIV << 8))
/* 注意:首先需要把分频使能位清零 */
li t1, 0x2
sw t1, 0x4(t0) // CPU_DIV_VALIDdisable
sw t2, 0x0(t0) // START_FREQ
sw t3, 0x4(t0) // CLK_DIV_PARAM
DELAY(2000)
/* 使gpio(使lcd i2c spi ac97
gpio便使gpio
LDE*/
/* disable all gpio */
li a0,0xbfd00000
sw zero,0x10c0(a0) /* disable gpio 0-31 */
sw zero,0x10c4(a0) /* disable gpio 32-63 */
sw zero,0x10c8(a0) /* disable gpio 64-95 */
sw zero,0x10cc(a0)
li t0, 0xffffffff
sw t0, 0x10d0(a0)
sw t0, 0x10d4(a0)
sw t0, 0x10d8(a0)
sw t0, 0x10dc(a0)
sw t0, 0x10f0(a0)
sw t0, 0x10f4(a0)
sw t0, 0x10f8(a0)
sw t0, 0x10fc(a0)
/* lcd soft_reset and panel config & timing */
#ifdef DC_FB0
/* li a0, 0xbc301240
li a1, 0x00100103
sw a1, 0x0(a0)
li a1, 0x00000103
sw a1, 0x0(a0) //soft_reset
li a1, 0x00100103
sw a1, 0x0(a0)
li a1, 0x80001111
sw a1, 0x180(a0) //panel config
li a1, 0x33333333
sw a1, 0x1a0(a0)*/
#endif
li output_en, 0x1
#ifdef FAST_STARTUP
li a1, 0x03000000
sw a1, 0x10c4(a0)
sw a1, 0x10d4(a0)
lw a2, 0x10e4(a0)
and a2, a1
beq a2, a1, get_pin_val_finish
nop
li output_en, 0x1
get_pin_val_finish:
#endif
/* Initializing. Standby... */
/*
* s0ROM
* s00ROM0RAM
* cache
*/
bnez s0, 1f // s00ROM1
nop
li a0, 128
jal rtthread_startup // main
nop
1:
/* use only 8wins */
#define CPU_WIN_BASE 0xbfd00000
#define CPU_WIN_MASK 0xbfd00040
#define CPU_WIN_MMAP 0xbfd00080
#define set_cpu_window(id, base, mask, mmap) \
li t0, CPU_WIN_BASE ; \
sw $0, 0x80+id*8(t0) ; \
li t1, base ; \
sw t1, 0x00+id*8(t0) ; \
sw $0, 0x04+id*8(t0) ; \
li t1, mask ; \
sw t1, 0x40+id*8(t0) ; \
sw $0, 0x44+id*8(t0) ; \
li t1, mmap ; \
sw t1, 0x80+id*8(t0) ; \
sw $0, 0x84+id*8(t0)
/* fixup cpu window */
cpu_win_fixup:
//
// hit = (paddr & mask) == (mmap & mask)
// mapped_addr = paddr &~mask | mmap & mask
//
// mmap[7] -> enable
// mmap[5] -> block trans enable
// mmap[4] -> cachable
// mmap[1:0] -> destination
//
// NOTE: the address windows has priority, win0 > win1 > ... > win7
/* set_cpu_window(0, 0x1c280000, 0xfff80000, 0x1c280083) // camera 512K
set_cpu_window(1, 0x1c300000, 0xfff00000, 0x1c300081) // dc 1M
set_cpu_window(2, 0x1fe10000, 0xffffe000, 0x1fe10082) // gmac0 8K
set_cpu_window(3, 0x1fe10000, 0xffff0000, 0x1fe100d0) // gmac0 64K
set_cpu_window(4, 0x1f000000, 0xff000000, 0x1f000082) // AXIMUX 16M
set_cpu_window(5, 0x00000000, 0x00000000, 0x000000f0) // ddr 0
set_cpu_window(6, 0x00000000, 0x00000000, 0x000000f0) // ddr 0
set_cpu_window(7, 0x00000000, 0x00000000, 0x000000f0) // ddr 0*/
/* set_cpu_window(0, 0x1c280000, 0xfff80000, 0x1c2800d3) // camera
// set_cpu_window(1, 0x1fc00000, 0xfff00000, 0x1fc000f2) //
set_cpu_window(2, 0x1c300000, 0xfff00000, 0x1c3000d1) // dc 1M
// set_cpu_window(3, 0x1f000000, 0xff000000, 0x1f0000d2) //
set_cpu_window(4, 0x00000000, 0x00000000, 0x000000f0)
set_cpu_window(5, 0x00000000, 0x00000000, 0x000000f0)
set_cpu_window(6, 0x00000000, 0x00000000, 0x000000f0) // ddr 0
set_cpu_window(7, 0x00000000, 0x00000000, 0x000000f0) // ddr 0*/
// after this fixup, the kernel code should be compiled with
// uncached instruction fetch patch
/* 配置内存 */
li msize, MEM_SIZE
#if !defined(NAND_BOOT_EN)
/*
SD_CONFIG[31:0]SD_CONFIG[63:32]
3232
使
*/
//
li t1, 0xbfd00410 // SD_CONFIG[31:0]0xbfd00410
li a1, SD_PARA0 // SD_PARA0sdram_cfg.S
sw a1, 0x0(t1) // SD_PARA0SD_CONFIG[31:0]
li a1, SD_PARA1
sw a1, 0x4(t1) // SD_PARA1SD_CONFIG[63:32]
//
li a1, SD_PARA0
sw a1, 0x0(t1)
li a1, SD_PARA1
sw a1, 0x4(t1)
//
li a1, SD_PARA0
sw a1, 0x0(t1)
li a1, SD_PARA1_EN // 使
sw a1, 0x4(t1)
// DELAY(100)
#endif
/**************************************CACHE*****************************/
#define CF_7_SE (1 << 3) /* Secondary cache enable */
#define CF_7_SC (1 << 31) /* Secondary cache not present */
#define CF_7_TE (1 << 12) /* Tertiary cache enable */
#define CF_7_TC (1 << 17) /* Tertiary cache not present */
#define CF_7_TS (3 << 20) /* Tertiary cache size */
#define CF_7_TS_AL 20 /* Shift to align */
#define NOP8 nop;nop;nop;nop;nop;nop;nop;nop
do_caches:
/* Init caches... */
li s7, 0 /* no L2 cache */
li s8, 0 /* no L3 cache */
bal cache_init // cache_init
nop
mfc0 a0, CP0_CONFIG // 0configa0
and a0, a0, ~((1<<12) | 7) // a0 = a0 & ~((1<<12) | 7)
or a0, a0, 2 // a0 |= 2
mtc0 a0, CP0_CONFIG // a00config
/***********************MEMORY DEBUGGING AND COPY SELF TO RAM***********************/
//#include "newtest.32/mydebug.S"
bootnow:
/* copy program to sdram to make copy fast */
/* 先将执行拷贝pmon到内存任务的代码拷贝到内存0xa0000000 */
/* 121122
* 0x80010000
* ROMSPI NOR FLASH0xBFC00000
* s0
*/
la t0, 121f // 121t0
addu t0, s0 // 使s0t0(121)
la t1, 122f // 122t1
addu t1, s0 // 使s0t1(122)
li t2, 0xa0000000 // 0xa0000000t2
1:
lw v0, (t0) // t04v0
sw v0, (t2) // v0t2
addu t0, 4 // t04
addu t2, 4 // t24
ble t0, t1, 1b // t0 <= t114
nop
li t0, 0xa0000000 // 0xa0000000t0
jr t0 // 0xa0000000
nop
121:
/* Copy PMON to execute location... */
/* 0xa0010000
kseg0(0x8000 0000 - 0x9FFF FFFF)kseg1(0xA000 0000 - 0xBFFF FFFF)
0xA000 0000kseg10x8000 0000kseg0
0x8001 00000xA001 0000
*/
la a0, _start // start0x80010000a0
addu a1, a0, s0 // 使s0a0a1=0xBFC00000
la a2, __bss_start // _edataa2
or a0, 0xa0000000 // a0 = a0 | 0xa0000000 = 0xa0010000
or a2, 0xa0000000 // a2 = a2 | 0xa0000000_edata
subu t1, a2, a0 // t1 = a2 - a0start_edata
srl t1, t1, 2 // t1 >>= 2t14(44)
// t1使
move t0, a0 // t0 = a0 = 0xa0010000 ()
move t1, a1 // t1 = a1 = 0xBFC00000 (startROM)
move t2, a2 // t2 = a2 (_edataROM)
/* copy text section */
1: and t3, t0, 0x0000ffff // t3 = t0 & 0x0000ffff16
bnez t3, 2f // t302t3使
nop
2: lw t3, 0(t1) // t14t3
nop
sw t3, 0(t0) // t34t0
addu t0, 4 // t04
addu t1, 4 // t1 4
bne t2, t0, 1b // t2t01
nop
/* copy text section done. */
/* clear bss */
la t0, __bss_start
la t1, __bss_end
_clr_bss_loop:
sw zero, 0(t0)
bne t0, t1, _clr_bss_loop
addiu t0, t0, 4
/* disable interrupt */
mfc0 t0, CP0_STATUS
and t0, 0xfffffffe # By default it will be disabled.
mtc0 t0, CP0_STATUS # Set CPU to disable interrupt.
nop
/* disable cache */
mfc0 t0, CP0_CONFIG
and t0, 0xfffffff8
or t0, 0x2 # disable,!default value is not it!
mtc0 t0, CP0_CONFIG # Set CPU to disable cache.
nop
/* jump to RT-Thread RTOS */
jal rtthread_startup
nop
/* restart, never die */
j _start
nop
122:
stuck:
b stuck
nop
#endif
.extern tlb_refill_handler .extern tlb_refill_handler
.extern cache_error_handler .extern cache_error_handler