[Linux驅動煉成記] 05-儲存eMMC配置
阿新 • • 發佈：2018-11-10
嵌入式開發環境
- 主控晶片: Amlogic A113X
- Linux Kernel : 4.9
- eMMc : 金士頓 4GB
- A113X主控晶片
- 金士頓的4GB eMMC
- 海力士256M DDR
- 博通WIFI模組 AP6212
支援eMMC
現有專案儲存需要由Nand Flash換成eMMC
eMMC介紹
eMMC (Embedded Multi Media Card) 為MMC協會所訂立的，eMMC 相當於 NandFlash+主控IC ，對外的介面協議與SD、TF卡一樣，主要是針對手機或平板電腦等產品的內嵌式儲存器標準規格。eMMC的一個明顯優勢是在封裝中集成了一個控制器，它提供標準介面並管理快閃記憶體，使得手機廠商就能專注於產品開發的其它部分，並縮短向市場推出產品的時間。這些特點對於希望通過縮小光刻尺寸和降低成本的NAND供應商來說，同樣的重要。1
原廠補丁介紹
原廠主要提供3個補丁: uboot,kernel,rootfs
- kernel改動如下
- 禁用nand flash
- 使能eMMC
+++ b/arch/arm64/boot/dts/amlogic/xxx.dts @@ -60,7 +60,7 @@ mtd_nand { compatible = "amlogic, aml_mtd_nand"; dev_name = "mtdnand"; - status = "okay"; + status = "disable"; reg = <0x0 0xFFE07800 0x0 0x200>; interrupts = < 0 34 1 >; pinctrl-names = "nand_rb_mod","nand_norb_mod", "nand_cs_only"; @@ -465,7 +465,7 @@ }; }; sd_emmc_c:[email protected] { - status = "disabled"; + status = "okay"; compatible = "amlogic, meson-aml-mmc"; reg = <0x0 0xffe07000 0x0 0x2000>; interrupts = <0 218 1>; @@ -629,7 +629,7 @@ system:system { pname = "system"; - size = <0x0 0x80000000>; + size = <0x0 0x82000000>; mask = <1>; }; cache:cache -- 1.9.1
- 記憶體大小配置
[email protected] {
device_type = "memory";
linux,usable-memory = <0x0 0x000000 0x0 0x10000000>;
};
這個很重要，記憶體大小不匹配，會造成核心崩潰，由於這點排除了將近3h
- 檔案系統主由buildroot配置編譯，主要改動如下:
//分割槽格式又ubifs改為ext2
-BR2_TARGET_ROOTFS_INITRAMFS_LIST="board/amlogic/common/initramfs/initramfs-49/ramfslist-32-ubi-release"
+BR2_TARGET_ROOTFS_INITRAMFS_LIST="board/amlogic/common/initramfs/initramfs-49/ramfslist-32-ext2"
-BR2_TARGET_UBOOT_AMLOGIC_BOOTARGS="root=/dev/ubi0_0 rootfstype=ubifs init=/sbin/init"
+BR2_TARGET_UBOOT_AMLOGIC_BOOTARGS="root=/dev/system rootfstype=ext4 init=/sbin/init
問題點
打完原提供的補丁之後，編譯韌體燒錄，系統進入檔案系統提示:
[ [email protected]] meson-mmc: add_emmc_partition
[ [email protected]] meson-mmc: [mmcblk0p01] bootloader offset 0x000000000000, size 0x000000400000
[ [email protected]] meson-mmc: [mmcblk0p02] reserved offset 0x000002400000, size 0x000004000000
[ [email protected]] meson-mmc: [mmcblk0p03] cache offset 0x000006c00000, size 0x000020000000
[ [email protected]] meson-mmc: [mmcblk0p04] env offset 0x000027400000, size 0x000000800000
[ [email protected]] meson-mmc: [mmcblk0p05] logo offset 0x000028400000, size 0x000002000000
[ [email protected]] meson-mmc: [mmcblk0p06] recovery offset 0x00002ac00000, size 0x000002000000
[ [email protected]] meson-mmc: [mmcblk0p07] rsv offset 0x00002d400000, size 0x000000800000
[ [email protected]] meson-mmc: [mmcblk0p08] tee offset 0x00002e400000, size 0x000000800000
[ [email protected]] meson-mmc: [mmcblk0p09] crypt offset 0x00002f400000, size 0x000002000000
[ [email protected]] meson-mmc: [mmcblk0p10] misc offset 0x000031c00000, size 0x000002000000
[ [email protected]] meson-mmc: [mmcblk0p11] instaboot offset 0x000034400000, size 0x000000400000
[ [email protected]] meson-mmc: [mmcblk0p12] boot offset 0x000035000000, size 0x000002000000
[ [email protected]] meson-mmc: [mmcblk0p13] system offset 0x000037800000, size 0x000082000000
[ [email protected]] meson-mmc: [mmcblk0p14] data offset 0x0000ba000000, size 0x000028000000
[ [email protected]] card key: card_blk_probe.
[ [email protected]] emmc_key_init:183 emmc key lba_start:0x12020,lba_end:0x12220
[ [email protected]] emmc key: emmc_key_init:205 ok.
[ [email protected]] meson-mmc: amlmmc_dtb_init: register dtb chardev[ [email protected]] meson-mmc: amlmmc_dtb_init: register dtb chardev OK
[ [email protected]] meson-mmc: Exit aml_emmc_partition_ops OK.
[ [email protected]] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[ [email protected]] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 1
[ [email protected]] xhci-hcd xhci-hcd.0.auto: hcc params 0x0220f664 hci version 0x100 quirks 0x02010010
[ [email protected]] xhci-hcd xhci-hcd.0.auto: irq 26, io mem 0xff500000
[ [email protected]] hub 1-0:1.0: USB hub found
[ [email protected]] hub 1-0:1.0: 1 port detected
[ [email protected]] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[ [email protected]] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 2
[ [email protected]] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[ [email protected]] hub 2-0:1.0: USB hub found
[ [email protected]] hub 2-0:1.0: config failed, hub doesn't have any ports! (err -19)
[ [email protected]] platform ff642000.audiobus:loopback: Can't retrieve tdmin_mpll clock
[ [email protected]] if use extern loopback, pls set datalb-lane-mask-in
[ [email protected]] parse loopback:, lb mode:0
[ [email protected]] datain_src:4, datain_chnum:8, datain_chumask:3f
[ [email protected]] datalb_src:2, datalb_chnum:2
[ [email protected]] datalb_chswap:0x0,datalb_chumask:3
[ [email protected]] aml_pdm_probe
[ [email protected]] aml_pdm_dai_probe
[ [email protected]] aml_dai_set_tdm_sysclk freq(12288000), mpll/mclk(2)
[ [email protected]] aml_dai_set_tdm_slot(), txmask(0x3), rxmask(0x3)
[ [email protected]] slots(2), slot_width(32), lanes(1)
[ [email protected]] asoc aml_dai_set_tdm_fmt, 0x4014, ffffffc00cccd118, id(0), clksel(0)
[ [email protected]] pad clk ctl value:0
[ [email protected]] sclk_ph0 (pad) clk ctl set:0
[ [email protected]] master_mode(1), binv(0), finv(0) out_skew(1), in_skew(3)
[ [email protected]] asoc-aml-card auge_sound: multicodec <-> TDM-A mapping ok
[ [email protected]] aml_dai_set_tdm_sysclk freq(12288000), mpll/mclk(2)
[ [email protected]] aml_dai_set_tdm_slot(), txmask(0x3), rxmask(0x3)
[ [email protected]] slots(2), slot_width(32), lanes(1)
[ [email protected]] asoc aml_dai_set_tdm_fmt, 0x4001, ffffffc00cccd318, id(1), clksel(1)
[ [email protected]] pad clk ctl value:3
[ [email protected]] sclk_ph0 (pad) clk ctl set:3
[ [email protected]] master_mode(1), binv(0), finv(0) out_skew(1), in_skew(3)
[ [email protected]] asoc-aml-card auge_sound: multicodec <-> TDM-B mapping ok
[ [email protected]] aml_dai_set_tdm_sysclk freq(12288000), mpll/mclk(2)
[ [email protected]] aml_dai_set_tdm_slot(), txmask(0x3), rxmask(0x3)
[ [email protected]] slots(2), slot_width(32), lanes(2)
[ [email protected]] tas575x_set_dai_fmt, format:0x4011
[ [email protected]] asoc aml_dai_set_tdm_fmt, 0x4011, ffffffc00cccd618, id(2), clksel(2)
[ [email protected]] pad clk ctl value:3
[ [email protected]] sclk_ph0 (pad) clk ctl set:3
[ [email protected]] master_mode(1), binv(0), finv(0) out_skew(1), in_skew(3)
[ [email protected]] asoc-aml-card auge_sound: tas575x <-> TDM-C mapping ok
[ [email protected]] aml_pdm_pcm_new dai->name: ff642000.audiobus:pdm dai->id: 0
[ [email protected]] asoc-aml-card auge_sound: dummy <-> ff642000.audiobus:pdm mapping ok
[ [email protected]] snd_card_add_kcontrols card:ffffffc00d1b9818
[ [email protected]] aml_vrtc rtc: setting system clock to 2015-01-01 00:00:05 UTC (1420070405)
[ [email protected]] dwc_otg: usb0: type: 2 speed: 0, config: 0, dma: 0, id: 0, phy: ffe09000, ctrl: 0
[ [email protected]] dwc_otg: Core Release: 3.10a
[ [email protected]] dwc_otg: Setting default values for core params
[ [email protected]] dwc_otg: curmode: 0, host_only: 0
[ [email protected]] dwc_otg: Using Buffer DMA mode
[ [email protected]] dwc_otg: OTG VER PARAM: 1, OTG VER FLAG: 1
[ [email protected]] dwc_otg: Working on port type = SLAVE
[ [email protected]] dwc_otg: Dedicated Tx FIFOs mode
[ [email protected]] cpucore_cooling_register, max_cpu_core_num:4
[ [email protected]] gxbb_pm: enter meson_pm_probe!
[ [email protected]] gxbb_pm: meson_pm_probe done
[ 3.24126 [email protected]] meson_uart ff803000.serial: ttyS0 use xtal(8M) 24000000 change 115200 to 115200
[ [email protected]] Freeing unused kernel memory: 4480K
[ [email protected]] Failed to execute /init (error -2) //-2 返回值代表資料夾不存在
[ [email protected]] meson_uart ff803000.serial: ttyS0 use xtal(8M) 24000000 change 115200 to 115200
mkdir: can't create directory '/dev/pts': File exists
can't run '/etc/init.d/rcS': No such file or directory
can't open /dev/null: No such file or directory
can't open /dev/null: No such file or directory
can't open /dev/null: No such file or directory
can't open /dev/null: No such file or directory
can't open /dev/null: No such file or directory