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擴充CS8900驅動移植方法1(在配置好的本地CS8900驅動基礎上修改, 見"挂載最小系統過程.txt": line161~line275)
/linux-2.6.22.6/drivers/net/cs89x0.c:
注釋line201:
// #define RM9200_PA_CS8900 0x80000000 //local cs8900
// static unsigned int cs8900_irq_map[] = {57, 0, 0, 0}; //irq: 57
添加:
define RM9200_PA_CS8900 0x40000000 //extend cs8900
static unsigned int cs8900_irq_map[] = {93, 0, 0, 0}; //extend cs8900:pin124 PB29 IRQ0/93
修改menuconfig, 關閉nand flash功能(因為nandflash 和 cs8900公用一個base )
Device Drivers —>
<*> Memory Technology Device (MTD) support —>
< > NAND Device Support —>
Device Drivers ---> Network device support ---> Ethernet (10 or 100Mbit) ---> <*> CS89x0 support配置u-boot支援擴充cs8900: (需要關閉本地網卡, 配置成擴充網卡, 否則能挂載uImage, 但是不能挂載系統)
/u-boot-1.3.4/include/configs/at91rm9200dk.h:
注釋line264: // #define CS8900_BASE 0x80000300
注釋line173: // #define CONFIG_CMD_NAND
/u-boot-1.3.4/drivers/net/cs8900.c: 注釋: /*Net1(local) init (another config CS8900_BASE: 0x80000300) //Reset Net1 **is very important AT91C_BASE_PIOB->PIO_OER = 1<<27; AT91C_BASE_PIOB->PIO_CODR = 1<<27; //low //Configure PC13 controllers to periph A mode AT91C_BASE_PIOC->PIO_ASR = 1<<13; AT91C_BASE_PIOC->PIO_BSR = 0x00000000; AT91C_BASE_PIOC->PIO_PDR = 1<<13; //Configure CS7 AT91C_BASE_SMC2->SMC2_CSR[7] = 0x1100318A; */ 打開: //Net2(extend) init (another config CS8900_BASE: 0x40000300) //Reset Net2 **is very important AT91C_BASE_PIOC->PIO_OER = 1<<14; AT91C_BASE_PIOC->PIO_CODR = 1<<14; //low //Configure CS3 AT91C_BASE_SMC2->SMC2_CSR[3] = 0x1100318A; //儲存後重新編譯:
$ make
$ cp arch/arm/boot/uImage /work/nfs_root/
修改環境變量:
U-Boot> setenv bootcmd nfs 20007FC0 10.124.0.45:/work/nfs_root/uImage ;bootm 20007FC0
U-Boot> setenv bootargs noinitrd root=/dev/nfs nfsroot=10.124.0.45:/work/nfs_root/new_fs_mini ip=10.124.0.33:10.124.0.45:10.124.0.1:255.255.255.0::eth0:off init=/linuxrc console=ttySAC0,115200
U-Boot> saveenv
測試, 上電觀察序列槽列印輸出:
…
cs89x0:cs89x0_probe(0x0)
cs89x0.c: v2.4.3-pre1 Russell Nelson [email protected], Andrew Morton [email protected]
eth0: cs8900 rev K found at 0xc2a00300
cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line
cs89x0 media IRQ 93, programmed I/O, MAC 00:00:3e:26:0a:00
cs89x0_probe1() successful
…
init started: BusyBox v1.7.0 (2020-07-27 18:45:41 CST)
starting pid 687, tty ‘’: ‘/etc/init.d/rcS’
usb 1-2: device not accepting address 5, error -62
Please press Enter to activate this console. starting pid 693, tty '/dev/ttyS0': '/bin/sh' # -
擴充CS8900驅動移植方法2
/linux-2.6.22.6/drivers/net/arm/:
添加cs8900.c cs8900.h
/linux-2.6.22.6/drivers/net/arm/Kconfig:
添加:
config ARM_CS8900
tristate “ARM_CS8900 support”
depends on NET_ETHERNET && ARM && ARCH_AT91RM9200
help
if you have ARM_CS8900 card of this type then you should
always answer Y to this.
/linux-2.6.22.6/drivers/net/arm/Makefile:
添加: obj-$(CONFIG_ARM_CS8900) += cs8900.o
/linux-2.6.22.6/arch/arm/mach-at91/at91rm9200.c:
添加:
static struct map_desc at91rm9200_cs8900_desc[] __initdata = {
{
.virtual = 0xc2a00000,
.pfn = __phys_to_pfn(0x40000000),
.length = SZ_1M,
.type = MT_DEVICE,
},
};
配置menuconfig:
Device Drivers —>
Network device support —>
Ethernet (10 or 100Mbit) —>
<*> ARM_CS8900 support
配置u-boot支援擴充cs8900:(同上)
儲存後重新編譯:
$ make
$ cp arch/arm/boot/uImage /work/nfs_root/
修改環境變量:
U-Boot> setenv bootcmd nfs 20007FC0 10.124.0.45:/work/nfs_root/uImage ;bootm 20007FC0
U-Boot> setenv bootargs noinitrd root=/dev/nfs nfsroot=10.124.0.45:/work/nfs_root/new_fs_mini ip=10.124.0.33:10.124.0.45:10.124.0.1:255.255.255.0::eth0:off init=/linuxrc console=ttySAC0,115200
U-Boot> saveenv
測試, 上電觀察序列槽列印輸出:
…
allocate cs8900 device ok.
Cirrus Logic CS8900A driver for Linux (Modified for AT91RM9200)
debug:[cs8900_probe-504]
debug:[cs8900_probe-513]
debug:[cs8900_probe-519]
eth0: CS8900A rev E at 0xc2a00300 irq=25, addr: 00: 0:3E:26:0A: 0
…
starting pid 687, tty ‘’: ‘/etc/init.d/rcS’
Please press Enter to activate this console.
starting pid 693, tty ‘/dev/ttyS0’: ‘/bin/sh’
#
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擴充dm9000驅動移植方法1
/linux-2.6.22.6arch/arm/mach-at91/board-dk.c
添加line47:
#if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
#include <linux/dm9000.h>
#endif
#define rm9200_CS3 0x40000000 #define dm9000_irq 25 /* -------------------------------------------------------------------- * NET: DM900 * -------------------------------------------------------------------- */ #if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE) static struct resource rm9200_dm9k_resource[] = { [0] = { .start = rm9200_CS3, /* ADDR7=0，發送位址時使用這個位址 */ .end = rm9200_CS3 + 3, .flags = IORESOURCE_MEM, }, [1] = { .start = rm9200_CS3 + 0x80, /* ADDR7=1，傳輸資料時使用這個位址 */ .end = rm9200_CS3 + 0x80 + 3, .flags = IORESOURCE_MEM, }, [2] = { .start = dm9000_irq, /* 中斷号 */ .end = dm9000_irq, .flags = IORESOURCE_IRQ, } }; /* for the moment we limit ourselves to 16bit IO until some * better IO routines can be written and tested */ static struct dm9000_plat_data rm9200_dm9k_platdata = { .flags = DM9000_PLATF_16BITONLY, }; static struct platform_device rm9200_device_dm9k = { .name = "dm9000", .id = 0, .num_resources = ARRAY_SIZE(rm9200_dm9k_resource), .resource = rm9200_dm9k_resource, .dev = { .platform_data = &rm9200_dm9k_platdata, } }; #endif /* CONFIG_DM9000 */ 添加line446: #if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE) /* dm9000 */ platform_device_register(&rm9200_device_dm9k); #endif/linux-2.6.22.6/drivers/net/dm9000.c:
添加line412:
#if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
volatile unsigned long *AT91C_BASE_SMC2_CS3; //0xFFFFFF7C
AT91C_BASE_SMC2_CS3 = (unsigned long*)ioremap(0xFFFFFF7C, 4); *AT91C_BASE_SMC2_CS3 = 0x1100318A; iounmap(AT91C_BASE_SMC2_CS3); #endif 添加line595: #if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE) printk("Now use the default MAC address: 00:00:3e:0a:26:00\n"); ndev->dev_addr[0] = 0x00; ndev->dev_addr[1] = 0x00; ndev->dev_addr[2] = 0x3e; ndev->dev_addr[3] = 0x26; ndev->dev_addr[4] = 0x0a; ndev->dev_addr[5] = 0x00; #endif配置u-boot支援擴充dm9000網卡:
注釋line236: // #define CONFIG_DRIVER_CS8900 1
打開line270: #define CONFIG_DRIVER_DM9000 1
配置menuconfig:
Device Drivers —>
Network device support —>
Ethernet (10 or 100Mbit) —>
<*> DM9000 support
修改環境變量:
U-Boot> setenv bootcmd nfs 20007FC0 10.124.0.45:/work/nfs_root/uImage ;bootm 20007FC0
U-Boot> setenv bootargs noinitrd root=/dev/nfs nfsroot=10.124.0.45:/work/nfs_root/new_fs_mini ip=10.124.0.33:10.124.0.45:10.124.0.1:255.255.255.0::eth0:off init=/linuxrc console=ttySAC0,115200
U-Boot> saveenv
測試, 上電觀察序列槽列印輸出:
…
dm9000 Ethernet Driver
Now use the default MAC address: 00:00:3e:0a:26:00
eth0: dm9000 at c285c000,c285e080 IRQ 25 MAC: 00:00:3e:26:0a:00
…
VFS: Mounted root (nfs filesystem).
Freeing init memory: 108K
init started: BusyBox v1.7.0 (2020-07-27 18:45:41 CST)
starting pid 690, tty ‘’: ‘/etc/init.d/rcS’
Please press Enter to activate this console. starting pid 696, tty '/dev/ttyS0': '/bin/sh' # -
擴充dm9000驅動移植方法2(使用dm9dev9000c.c)
修改dm9dev9000c.c:
注釋line411: //if((db->chip_revision!=0x1A) || ((chip_info&(1<<5))!=0) || ((chip_info&(1<<2))!=1)) return -ENODEV;
添加line1609: #fefine MODULE 修改line1631: int __init init_module(void) 為: int __init dm9000a_init(void) 修改line1653: void __exit cleanup_module(void) 為: void __exit dm9000a_exit(void) 添加最後一行#endif上面: module_init(dm9000a_init); module_exit(dm9000a_exit); 修改line478: if (request_irq(dev->irq,&dmfe_interrupt,0,dev->name,dev)) 為: if (request_irq(dev->irq,&dmfe_interrupt,IRQF_TRIGGER_RISING,dev->name,dev)) //IRQF_TRIGGER_RISING=1 修改line382: outb(DM9KS_VID_L, iobase); id_val = inb(iobase + 4); outb(DM9KS_VID_H, iobase); id_val |= inb(iobase + 4) << 8; outb(DM9KS_PID_L, iobase); id_val |= inb(iobase + 4) << 16; outb(DM9KS_PID_H, iobase); id_val |= inb(iobase + 4) << 24; 為: outb(DM9KS_VID_L, iobase); id_val = inb(iobase + 0x80); outb(DM9KS_VID_H, iobase); id_val |= inb(iobase + 0x80) << 8; outb(DM9KS_PID_L, iobase); id_val |= inb(iobase + 0x80) << 16; outb(DM9KS_PID_H, iobase); id_val |= inb(iobase + 0x80) << 24; 修改line417: db->io_data = iobase + 4; 為: db->io_data = iobase + 0x80; 添加line35: volatile unsigned long *AT91C_BASE_SMC2_CS3; //0xFFFFFF7C AT91C_BASE_SMC2_CS3 = (unsigned long*)ioremap(0xFFFFFF7C, 4); *AT91C_BASE_SMC2_CS3 = 0x1100318A; iounmap(AT91C_BASE_SMC2_CS3); iobase = (unsigned int)ioremap(0x40000000, SZ_1M); irq = 93; // irq0: 25 or 93 添加line1685: iounmap((void *)iobase); 時間參數配置過程: 參考: at91rm9200晶片手冊(Page167): Figure 66. 不含 tDF 的标準讀協定 dm9000aep(Page49): 10.3 AC Electrical Characteristics & Timing Waveforms a. dm9000不發出等待信号，是以 等待狀态使能WSEN = 1; b. 片選啟動位址 ACSS=0; c. 讀、寫信号啟動時間 NRD = 0, NWD = 0, RWSETUP = 0; d. 讀、寫信号保持時間: >=10ns RWHOLD = 1; AT91C_BASE_SMC2->SMC2_CSR[3] = 0x10003183;配置/linux-2.6.22.6/drivers/net/Kconfig:
添加line878:
config DM9DEV9000C
tristate “DM9DEV9000C support”
depends on (ARM || MIPS) && NET_ETHERNET
select CRC32
select MII
—help—
Support for DM9000 chipset.
To compile this driver as a module, choose M here and read <file:Documentation/networking/net-modules.txt>. The module will be called DM9DEV9000C.配置/linux-2.6.22.6/drivers/net/Makefile:
添加line199:
obj-$(CONFIG_DM9DEV9000C) += dm9dev9000c.o
配置menuconfig:
Device Drivers —>
Network device support —>
Ethernet (10 or 100Mbit) —>
<*> DM9DEV9000C support
配置u-boot支援擴充dm9000網卡:
注釋line236: // #define CONFIG_DRIVER_CS8900 1
打開line270: #define CONFIG_DRIVER_DM9000 1
修改環境變量:
U-Boot> setenv bootcmd nfs 20007FC0 10.124.0.45:/work/nfs_root/uImage ;bootm 20007FC0
U-Boot> setenv bootargs noinitrd root=/dev/nfs nfsroot=10.124.0.45:/work/nfs_root/new_fs_mini ip=10.124.0.33:10.124.0.45:10.124.0.1:255.255.255.0::eth0:off init=/linuxrc console=ttySAC0,115200
U-Boot> saveenv
測試, 上電觀察序列槽列印輸出:
…
I/O: c2a00000, VID: 90000a46
id_val=0
…
Freeing init memory: 108K
init started: BusyBox v1.7.0 (2020-07-27 18:45:41 CST)
starting pid 688, tty ‘’: ‘/etc/init.d/rcS’
Please press Enter to activate this console. starting pid 694, tty '/dev/ttyS0': '/bin/sh' #
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