| Qualcomm IMEM |
| |
| IMEM is fast on-chip memory used for various debug features and dma transactions. |
| |
| Required properties |
| |
| -compatible: "qcom,msm-imem" |
| -reg: start address and size of imem memory |
| |
| If any children nodes exist the following properties are required: |
| -#address-cells: should be 1 |
| -#size-cells: should be 1 |
| -ranges: A triplet that includes the child address, parent address, & |
| length. The child address is assumed to be 0. |
| |
| Child nodes: |
| ------------ |
| |
| Peripheral Image Loader (pil): |
| ------------------------------ |
| Required properties: |
| -compatible: "qcom,msm-imem-pil" |
| -reg: start address and size of PIL region in imem |
| |
| Bootloader Stats: |
| ----------------- |
| Required properties: |
| -compatible: "qcom,msm-imem-boot_stats" |
| -reg: start address and size of boot_stats region in imem |
| |
| Cache error reporting: |
| ----------------- |
| Required properties: |
| -compatible: "qcom,msm-imem-cache_erp" |
| -reg: start address and size of cache_erp region in imem |
| |
| Memory Dump: |
| ------------ |
| Required properties: |
| -compatible: "qcom,msm-imem-mem_dump_table" |
| -reg: start address and size of mem_dump_table region in imem |
| |
| Restart Reason: |
| --------------- |
| Required properties: |
| -compatible: "qcom,msm-imem-restart_reason |
| -reg: start address and size of restart_reason region in imem |
| |
| Download Mode: |
| -------------- |
| Required properties: |
| -compatible: "qcom,msm-imem-download_mode" |
| -reg: start address and size of download_mode region in imem |
| |
| Emergency Download Mode: |
| ------------------------ |
| -compatible: "qcom,msm-imem-emergency_download_mode" |
| -reg: start address and size of emergency_download_mode region in imem |
| |
| USB Diag Cookies: |
| ----------------- |
| Memory region used to store USB PID and serial numbers to be used by |
| bootloader in download mode. |
| |
| Required properties: |
| -compatible: "qcom,msm-imem-diag-dload" |
| -reg: start address and size of USB Diag download mode region in imem |
| |
| Example: |
| |
| qcom,msm-imem { |
| compatible = "qcom,msm-imem"; |
| reg = <0xdeadbeef 0x1000>; /* < start_address size > */ |
| ranges = <0x0 0xdeadbeef 0x1000>; |
| #address-cells = <1>; |
| #size-cells = <1>; |
| |
| download_mode@0 { |
| compatible = "qcom,msm-imem-download_mode"; |
| reg = <0x0 8>; |
| }; |
| |
| restart_reason@65c { |
| compatible = "qcom,msm-imem-restart_reason"; |
| reg = <0x65c 4>; |
| }; |
| |
| imem_cache_erp: cache_erp@6a4 { |
| compatible = "qcom,msm-imem-cache_erp"; |
| reg = <0x6a4 4>; |
| }; |
| |
| boot_stats@6b0 { |
| compatible = "qcom,msm-imem-boot_stats"; |
| reg = <0x6b0 32>; |
| }; |
| |
| pil@94c { |
| compatible = "qcom,msm-imem-pil"; |
| reg = <0x94c 200>; |
| }; |
| |
| emergency_download_mode@fe0 { |
| compatible = "qcom,msm-imem-emergency_download_mode"; |
| reg = <0xfe0 12>; |
| }; |
| }; |