topic Re: Micorcode of T1040D4RDB in Layerscape

Micorcode of T1040D4RDB

sahanas — Fri, 29 Nov 2019 03:42:55 GMT

I am using T1040 D4 RDB kit. Can you please let me know the use of FMAN microcode which is located in NOR flash. when and where does this microcode gets copied to RAM location?

Re: Micorcode of T1040D4RDB

yipingwang — Fri, 29 Nov 2019 09:06:53 GMT

The FMan micro-code is needed for anything that runs on the FMan Controller.

FMAN ucode is loaded by fman_upload_firmware in u-boot source code drivers/net/fm/fm.c.

FMAN ucode is loaded in FMAN common part initialization.

Please refer to the following, when boot from NOR flash FMAN ucode is loaded from address 0xEFF00000 on NOR flash directly. For NAND, SPI and SD boot, the FMAN ucode will be copied to RAM allocated by malloc function.

#if defined(CONFIG_SYS_QE_FMAN_FW_IN_NOR)
        void *addr = (void *)CONFIG_SYS_FMAN_FW_ADDR;
#elif defined(CONFIG_SYS_QE_FMAN_FW_IN_NAND)
        size_t fw_length = CONFIG_SYS_QE_FMAN_FW_LENGTH;
        void *addr = malloc(CONFIG_SYS_QE_FMAN_FW_LENGTH);

        rc = nand_read(nand_info[0], (loff_t)CONFIG_SYS_FMAN_FW_ADDR,
                       &fw_length, (u_char *)addr);
        if (rc == -EUCLEAN) {
                printf("NAND read of FMAN firmware at offset 0x%x failed %d\n",
                        CONFIG_SYS_FMAN_FW_ADDR, rc);
        }

Re: Micorcode of T1040D4RDB

sahanas — Fri, 29 Nov 2019 10:40:33 GMT

When I boot from NOR flash, does u-boot code copies the microcode from 0xEFF00000 to any RAM location? where can I see that on T1040D4RDB kit in debug memory window to confirm that the microcode is loaded?

Re: Micorcode of T1040D4RDB

sahanas — Fri, 29 Nov 2019 10:47:36 GMT

When boot from NOR flash, whether u-boot copies FMAN ucode from address 0xEFF00000 to any RAM location? can I see that on debug memory window?

Re: Micorcode of T1040D4RDB

sahanas — Fri, 29 Nov 2019 10:48:10 GMT

When boot from NOR flash, whether u-boot copies FMAN ucode from address 0xEFF00000 to any RAM location? can I see that on debug memory window?

Re: Micorcode of T1040D4RDB

yipingwang — Fri, 06 Dec 2019 06:48:44 GMT

FMAN ucode will loaded from 0xEFF00000 on NOR flash directly, will not copy to RAM. You could dump it from NOR flash.