Progress with eMMC/SD driver

Author: dgarske

.github/workflows/test-build-riscv.yml

@@ -111,7 +111,8 @@ jobs:
       - name: Build wolfboot (riscv32)
         if: ${{ inputs.arch == 'riscv' }}
         run: |
-          make CROSS_COMPILE=riscv32-unknown-elf- FREEDOM_E_SDK=$GITHUB_WORKSPACE/freedom-e-sdk ${{inputs.make-args}}
+          # using riscv64 for now since riscv32 is missing "zicsr" extension
+          make CROSS_COMPILE=riscv64-unknown-elf- FREEDOM_E_SDK=$GITHUB_WORKSPACE/freedom-e-sdk ${{inputs.make-args}}
 
       - name: Build wolfboot (riscv64))
         if: ${{ inputs.arch == 'riscv64' }}

docs/Targets.md

@@ -876,6 +876,40 @@ set architecture riscv:rv64
 #thread apply all set $pc=_start
 ```
 
+### PolarFire Example Boot Output
+
+```
+disk_open: drv = 0
+mmc_set_timeout: timeout_us: 500000, tcfclk_khz: -824320848 (mhz: 3470646), timeout_val: 500000, dtcv: 15
+mmc_set_clock: clock_khz: 400, freq_khz: 400
+mmc_send_cmd: cmd_index: 0, cmd_arg: 00000000, resp_type: 0
+mmc_send_cmd: cmd_index: 8, cmd_arg: 00000100, resp_type: 9
+mmc_init: xpc:0, si8r:1, max_ma (3.3v:128 1.8v:128)
+mmc_send_cmd: cmd_index: 55, cmd_arg: 00000000, resp_type: 1
+mmc_send_cmd: cmd_index: 41, cmd_arg: 00000000, resp_type: 4
+ocr_reg: 0x40FF8000
+mmc_init: sending OCR arg: 0x41200000
+mmc_send_cmd: cmd_index: 55, cmd_arg: 00000000, resp_type: 1
+mmc_send_cmd: cmd_index: 41, cmd_arg: 41200000, resp_type: 4
+ocr_reg: 0x40FF8000
+mmc_send_cmd: cmd_index: 55, cmd_arg: 00000000, resp_type: 1
+mmc_send_cmd: cmd_index: 41, cmd_arg: 41200000, resp_type: 4
+ocr_reg: 0xC1FF8000
+mmc_send_cmd: cmd_index: 11, cmd_arg: 00000000, resp_type: 1
+mmc_send_cmd: cmd_index: 2, cmd_arg: 00000000, resp_type: 3
+mmc_send_cmd: cmd_index: 3, cmd_arg: 00000000, resp_type: 8
+mmc_init: rca: 43690
+mmc_send_cmd: cmd_index: 9, cmd_arg: AAAA0000, resp_type: 3
+mmc_init: sector size: 512
+mmc_init: sector count: 62333952
+mmc_send_cmd: cmd_index: 7, cmd_arg: AAAA0000, resp_type: 2
+Checking primary OS image in 0,1...
+Checking secondary OS image in 0,2...
+No valid OS image found in either partition 1 or 2
+wolfBoot: PANIC!
+```
+
+
 ### PolarFire TODO
 
 1) Add support for full HSS replacement using wolfboot.