3521里的mmz，osmem，mem，这三个东西有点蒙，哪位大佬帮我解释一下

本帖最后由 zhuangweiye 于 2017-10-11 11:28 编辑

linux（即OS）管理的内存大小是在u-boot的环境变量bootargs中设定

比如
bootargs=mem=128M console=ttyAMA0,115200 。。。

意思是linux管理128M，对于3521来说就是物理地址0x8000 0000 -- 0x87ff ffff的内存

对于海思MMZ来说是通过linux的驱动来管理linux mem设定以外的内存 （主要是海思模块要使用连续的物理地址）
MMZ的设定在loadxxx.sh中的
insmod mmz.ko mmz=anonymous,0,$mmz_start,$mmz_size anony=1 || report_error
来确定
通常来说$mmz_start就是linux mem设定的大小，上面例子中mem=128M，这里$mmz_start 就是0x8800 0000

因此要修改MMZ通常需要先修改linux的mem，后面load只能修改MMZ的大小和位置

[quote][url=forum.php?mod=redirect&goto=findpost&pid=79252&ptid=37927]zhuangweiye 发表于 2017-10-10 16:45[/url]
linux（即OS）管理的内存大小是在u-boot的环境变量bootarg中设定

比如
[/quote]

十分感谢:lol

[quote][url=forum.php?mod=redirect&goto=findpost&pid=79252&ptid=37927]zhuangweiye 发表于 2017-10-10 16:45[/url]
linux（即OS）管理的内存大小是在u-boot的环境变量bootarg中设定

比如
[/quote]

我已经按照你说的配置好了，但是free 命令 mem还是等于97M，而且我以前配置bootargs=mem=64M 时mem也是等于97M，这是怎么回事。

[quote][url=forum.php?mod=redirect&goto=findpost&pid=79256&ptid=37927]houyongnan 发表于 2017-10-10 20:00[/url]
我已经按照你说的配置好了，但是free 命令 mem还是等于97M，而且我以前配置bootargs=mem=64M 时mem也是等 ...[/quote]

这个。。。

给个启动的log看看

[quote][url=forum.php?mod=redirect&goto=findpost&pid=79264&ptid=37927]zhuangweiye 发表于 2017-10-11 07:43[/url]
这个。。。

给个启动的log看看[/quote]


U-Boot 2010.06-svn15616 (Mar 13 2017 - 18:43:10)

Check Flash Memory Controller v100 ... Found
SPI Nor(cs 0) ID: 0xc2 0x20 0x18
Block:64KB Chip:16MB Name:"MX25L128XX"
SPI Nor total size: 16MB
SPI Nand ID Table Version 1.4
16384 KiB hi_fmc at 0:0 is now current device
In:    serial
Out:   serial
Err:   serial
16384 KiB hi_fmc at 0:0 is now current device

jpeg decoding ...
addr:0x94000000,size:262144,logoaddr:0x94000000,:ff,ff
load jpeg err.
mktime: 1423840927
mktime: 1423840927
USB:   scanning bus for devices... 2 USB Device(s) found
0 Storage Device(s) found
Hit CTRL+C to stop autoboot:  0
16384 KiB hi_fmc at 0:0 is now current device

## Booting kernel from Legacy Image at 82000000 ...
   Image Name:   Linux-3.10.0
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1752536 Bytes = 1.7 MiB
   Load Address: 80008000
   Entry Point:  80008000
   Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0x0
Linux version 3.10.0 (root@localhost) (gcc version 4.8.3 20131202 (prerelease) (Hisilicon_v300) ) #11 Wed Sep 13 15:45:42 CST 2017
CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c53c7d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: bigfish
Memory policy: ECC disabled, Data cache writeback
CPU: All CPU(s) started in SVC mode.
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 25400
Kernel command line: mem=100M          console=ttyAMA0,115200 root=/dev/mtdblock2 rootfstype=jffs2 mtdparts=hi_sfc:1M(boot),4M(kernel),11M(rootfs) yy=72857=5>15959?<208<<:;936<7337?0:8;>604>99:48486748;>>6416?<0:838>:92<<42>719<818;989;0=56<59:721:5;3?68954;2095?9=229=206=<5<:811?3;9>8833?;;:>803<>6566?>;7594
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 100MB = 100MB total
Memory: 96888k/96888k available, 5512k reserved, 0K highmem
Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    vmalloc : 0xc6800000 - 0xff000000   ( 904 MB)
    lowmem  : 0xc0000000 - 0xc6400000   ( 100 MB)
    pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
    modules : 0xbf000000 - 0xbfe00000   (  14 MB)
      .text : 0xc0008000 - 0xc0409380   (4101 kB)
      .init : 0xc040a000 - 0xc04263b0   ( 113 kB)
      .data : 0xc0428000 - 0xc045a020   ( 201 kB)
       .bss : 0xc045a020 - 0xc0473998   ( 103 kB)
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:128
GIC CPU mask not found - kernel will fail to boot.
GIC CPU mask not found - kernel will fail to boot.
sched_clock: 32 bits at 62MHz, resolution 16ns, wraps every 68719ms
Console: colour dummy device 80x30
Calibrating delay loop... 1594.16 BogoMIPS (lpj=7970816)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
Initializing cgroup subsys freezer
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0xc02f3640 - 0xc02f3698
NET: Registered protocol family 16
DMA: preallocated 2048 KiB pool for atomic coherent allocations
hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
hw-breakpoint: maximum watchpoint size is 8 bytes.
Serial: AMBA PL011 UART driver
uart:0: ttyAMA0 at MMIO 0x12080000 (irq = 38) is a PL011 rev2
console [ttyAMA0] enabled
uart:1: ttyAMA1 at MMIO 0x12090000 (irq = 39) is a PL011 rev2
uart:2: ttyAMA2 at MMIO 0x120a0000 (irq = 40) is a PL011 rev2
bio: create slab at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Switching to clocksource timer0
NET: Registered protocol family 2
TCP established hash table entries: 1024 (order: 1, 8192 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
TCP: reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
CPU PMU: probing PMU on CPU 0
hw perfevents: enabled with ARMv7 Cortex-A7 PMU driver, 5 counters available
VFS: Disk quotas dquot_6.5.2
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
squashfs: version 4.0 (2009/01/31) Phillip Lougher
jffs2: version 2.2. (NAND) ? 2001-2006 Red Hat, Inc.
msgmni has been set to 189
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
io scheduler noop registered
io scheduler deadline registered (default)
io scheduler cfq registered
Encryption Init Successful
brd: module loaded
loop: module loaded
hiahci: initializing
ahci ahci.0: can't get clock
ahci: SSS flag set, parallel bus scan disabled
ahci ahci.0: AHCI 0001.0300 32 slots 2 ports 6 Gbps 0x3 impl platform mode
ahci ahci.0: flags: ncq sntf stag pm led clo only pmp fbs slum part ccc sxs boh
scsi0 : ahci_platform
scsi1 : ahci_platform
ata1: SATA max UDMA/133 mmio [mem 0x11010000-0x1101ffff] port 0x100 irq 49
ata2: SATA max UDMA/133 mmio [mem 0x11010000-0x1101ffff] port 0x180 irq 49
SPI Nor(cs 0) ID: 0xc2 0x20 0x18
SPI(cs0): Block:64KB
Chip:16MB Name:"MX25L128XX"
3 cmdlinepart partitions found on MTD device hi_sfc
3 cmdlinepart partitions found on MTD device hi_sfc
Creating 3 MTD partitions on "hi_sfc":
0x000000000000-0x000000100000 : "boot"
0x000000100000-0x000000500000 : "kernel"
0x000000500000-0x000001000000 : "rootfs"
Higmac dma_sg_phy: 0x85440000
libphy: higmac_mdio_bus: probed
ETH0: rgmii, phy_addr=1, mii_name=mdio0
PPP generic driver version 2.4.2
NET: Registered protocol family 24
usbcore: registered new interface driver zd1201
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
before uhci_hcd and ohci_hcd, not after
hiusb-ehci hiusb-ehci.0: HIUSB EHCI
hiusb-ehci hiusb-ehci.0: new USB bus registered, assigned bus number 1
hiusb-ehci hiusb-ehci.0: irq 51, io mem 0x10040000
hiusb-ehci hiusb-ehci.0: USB 0.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
hiusb-ohci hiusb-ohci.0: HIUSB OHCI
hiusb-ohci hiusb-ohci.0: new USB bus registered, assigned bus number 2
hiusb-ohci hiusb-ohci.0: irq 50, io mem 0x10030000
ata1: SATA link down (SStatus 0 SControl 300)
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
usbcore: registered new interface driver usb-storage
mousedev: PS/2 mouse device common for all mice
hisi_i2c hisi_i2c.0: Hisilicon [i2c-0] probed!
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
TCP: cubic registered
NET: Registered protocol family 17
NET: Registered protocol family 15
Key type dns_resolver registered
VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
ata2: SATA link down (SStatus 0 SControl 300)
usb 2-2: new low-speed USB device number 2 using hiusb-ohci
input: USB Optical Mouse as /devices/platform/hiusb-ohci.0/usb2/2-2/2-2:1.0/input/input0
hid-generic 0003:04CA:0061.0001: input: USB HID v1.11 Mouse [USB Optical Mouse] on usb-hiusb-ohci-2/input0
VFS: Mounted root (jffs2 filesystem) on device 31:2.
Freeing unused kernel memory: 112K (c040a000 - c0426000)

[quote][url=forum.php?mod=redirect&goto=findpost&pid=79265&ptid=37927]houyongnan 发表于 2017-10-11 08:51[/url]
U-Boot 2010.06-svn15616 (Mar 13 2017 - 18:43:10)

Check Flash Memory Controller v100 ... Found ...[/quote]

“Kernel command line: mem=100M ”

”Memory: 100MB = 100MB total
Memory: 96888k/96888k available, 5512k reserved, 0K highmem"

很正常呀

再改个mem=64M的log看看

[quote][url=forum.php?mod=redirect&goto=findpost&pid=79273&ptid=37927]zhuangweiye 发表于 2017-10-11 10:07[/url]
“Kernel command line: mem=100M ”

”Memory: 100MB = 100MB total
[/quote]

U-Boot 2010.06-svn15616 (Mar 13 2017 - 18:43:10)

Check Flash Memory Controller v100 ... Found
SPI Nor(cs 0) ID: 0xc2 0x20 0x18
Block:64KB Chip:16MB Name:"MX25L128XX"
SPI Nor total size: 16MB
SPI Nand ID Table Version 1.4
16384 KiB hi_fmc at 0:0 is now current device
In:    serial
Out:   serial
Err:   serial
16384 KiB hi_fmc at 0:0 is now current device

jpeg decoding ...
addr:0x94000000,size:262144,logoaddr:0x94000000,:ff,ff
load jpeg err.
mktime: 1423845844
mktime: 1423845844
USB:   scanning bus for devices... 2 USB Device(s) found
0 Storage Device(s) found
Hit CTRL+C to stop autoboot:  0
16384 KiB hi_fmc at 0:0 is now current device

## Booting kernel from Legacy Image at 82000000 ...
   Image Name:   Linux-3.10.0
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1752536 Bytes = 1.7 MiB
   Load Address: 80008000
   Entry Point:  80008000
   Loading Kernel Image ... OK
OK

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0x0
Linux version 3.10.0 (root@localhost) (gcc version 4.8.3 20131202 (prerelease) (Hisilicon_v300) ) #11 Wed Sep 13 15:45:42 CST 2017
CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c53c7d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: bigfish
Memory policy: ECC disabled, Data cache writeback
CPU: All CPU(s) started in SVC mode.
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 25400
Kernel command line: mem=100M         console=ttyAMA0,115200 root=/dev/mtdblock2 rootfstype=jffs2 mtdparts=hi_sfc:1M(boot),4M(kernel),11M(rootfs) yy=;;>7><;1;6:=7:9>71642<042;:9<1<9:8;>604>99:48486748;>>6416?<0:838>:92<<42>719<818;989;0=56<59:721:5;3?68954;2095?9=229=206=<5<:811?3;9>8833?;;:>803<>6566?>;7594
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 100MB = 100MB total
Memory: 96888k/96888k available, 5512k reserved, 0K highmem
Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    vmalloc : 0xc6800000 - 0xff000000   ( 904 MB)
    lowmem  : 0xc0000000 - 0xc6400000   ( 100 MB)
    pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
    modules : 0xbf000000 - 0xbfe00000   (  14 MB)
      .text : 0xc0008000 - 0xc0409380   (4101 kB)
      .init : 0xc040a000 - 0xc04263b0   ( 113 kB)
      .data : 0xc0428000 - 0xc045a020   ( 201 kB)
       .bss : 0xc045a020 - 0xc0473998   ( 103 kB)
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:128
GIC CPU mask not found - kernel will fail to boot.
GIC CPU mask not found - kernel will fail to boot.
sched_clock: 32 bits at 62MHz, resolution 16ns, wraps every 68719ms
Console: colour dummy device 80x30
Calibrating delay loop... 1594.16 BogoMIPS (lpj=7970816)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
Initializing cgroup subsys freezer
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0xc02f3640 - 0xc02f3698
NET: Registered protocol family 16
DMA: preallocated 2048 KiB pool for atomic coherent allocations
hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
hw-breakpoint: maximum watchpoint size is 8 bytes.
Serial: AMBA PL011 UART driver
uart:0: ttyAMA0 at MMIO 0x12080000 (irq = 38) is a PL011 rev2
console [ttyAMA0] enabled
uart:1: ttyAMA1 at MMIO 0x12090000 (irq = 39) is a PL011 rev2
uart:2: ttyAMA2 at MMIO 0x120a0000 (irq = 40) is a PL011 rev2
bio: create slab at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Switching to clocksource timer0
NET: Registered protocol family 2
TCP established hash table entries: 1024 (order: 1, 8192 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
TCP: reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
CPU PMU: probing PMU on CPU 0
hw perfevents: enabled with ARMv7 Cortex-A7 PMU driver, 5 counters available
VFS: Disk quotas dquot_6.5.2
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
squashfs: version 4.0 (2009/01/31) Phillip Lougher
jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
msgmni has been set to 189
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
io scheduler noop registered
io scheduler deadline registered (default)
io scheduler cfq registered
Encryption Init Successful
brd: module loaded
loop: module loaded
hiahci: initializing
ahci ahci.0: can't get clock
ahci: SSS flag set, parallel bus scan disabled
ahci ahci.0: AHCI 0001.0300 32 slots 2 ports 6 Gbps 0x3 impl platform mode
ahci ahci.0: flags: ncq sntf stag pm led clo only pmp fbs slum part ccc sxs boh
scsi0 : ahci_platform
scsi1 : ahci_platform
ata1: SATA max UDMA/133 mmio [mem 0x11010000-0x1101ffff] port 0x100 irq 49
ata2: SATA max UDMA/133 mmio [mem 0x11010000-0x1101ffff] port 0x180 irq 49
SPI Nor(cs 0) ID: 0xc2 0x20 0x18
SPI(cs0): Block:64KB
Chip:16MB Name:"MX25L128XX"
3 cmdlinepart partitions found on MTD device hi_sfc
3 cmdlinepart partitions found on MTD device hi_sfc
Creating 3 MTD partitions on "hi_sfc":
0x000000000000-0x000000100000 : "boot"
0x000000100000-0x000000500000 : "kernel"
0x000000500000-0x000001000000 : "rootfs"
Higmac dma_sg_phy: 0x85440000
libphy: higmac_mdio_bus: probed
ETH0: rgmii, phy_addr=1, mii_name=mdio0
PPP generic driver version 2.4.2
NET: Registered protocol family 24
usbcore: registered new interface driver zd1201
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
before uhci_hcd and ohci_hcd, not after
hiusb-ehci hiusb-ehci.0: HIUSB EHCI
hiusb-ehci hiusb-ehci.0: new USB bus registered, assigned bus number 1
hiusb-ehci hiusb-ehci.0: irq 51, io mem 0x10040000
hiusb-ehci hiusb-ehci.0: USB 0.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
hiusb-ohci hiusb-ohci.0: HIUSB OHCI
hiusb-ohci hiusb-ohci.0: new USB bus registered, assigned bus number 2
hiusb-ohci hiusb-ohci.0: irq 50, io mem 0x10030000
ata1: SATA link down (SStatus 0 SControl 300)
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
usbcore: registered new interface driver usb-storage
mousedev: PS/2 mouse device common for all mice
hisi_i2c hisi_i2c.0: Hisilicon [i2c-0] probed!
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
TCP: cubic registered
NET: Registered protocol family 17
NET: Registered protocol family 15
Key type dns_resolver registered
VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
ata2: SATA link down (SStatus 0 SControl 300)
usb 2-2: new low-speed USB device number 2 using hiusb-ohci
input: USB Optical Mouse as /devices/platform/hiusb-ohci.0/usb2/2-2/2-2:1.0/input/input0
hid-generic 0003:04CA:0061.0001: input: USB HID v1.11 Mouse [USB Optical Mouse] on usb-hiusb-ohci-2/input0
VFS: Mounted root (jffs2 filesystem) on device 31:2.
Freeing unused kernel memory: 112K (c040a000 - c0426000)

            _ _ _ _ _ _ _ _ _ _ _ _
            \  _  _   _  _ _ ___
            / /__/ \ |_/
           / __   /  -  _ ___
          / /  / /  / /
  _ _ _ _/ /  /  \_/  \_ ______
___________\___\__________________

[RCS]: /etc/init.d/S00devs
[RCS]: /etc/init.d/S01udev
[RCS]: /etc/init.d/S80network
Auto login as root ...
Jan  1 00:00:08 login[831]: root login on 'ttyS000'
Welcome to HiLinux.
None of nfsroot found in cmdline.

[quote][url=forum.php?mod=redirect&goto=findpost&pid=79274&ptid=37927]houyongnan 发表于 2017-10-11 10:13[/url]
U-Boot 2010.06-svn15616 (Mar 13 2017 - 18:43:10)

Check Flash Memory Controller v100 ... Found
[/quote]

“Kernel command line: mem=100M  ”

没有改呀，还是说u-boot里面写死了

[quote][url=forum.php?mod=redirect&goto=findpost&pid=79277&ptid=37927]zhuangweiye 发表于 2017-10-11 10:39[/url]
“Kernel command line: mem=100M  ”

没有改呀，还是说u-boot里面写死了[/quote]

我改了，uboot是被人给我的，那就应该是uboot写死了。我都不知道uboot还有写死这中操作。
感谢。:lol，

:victory::victory::victory::victory: