At present sandbox only supports a basic set of features. To help address this, a recent series added SPI and SPI flash support; this series expands the coverage further.
Firstly SDL is used to provide LCD and audio support. Sandbox gains its own LCD driver which can display images, host a command line, etc. The audio support is basic and needs additional work, but it is a starting point. SDL also provides a keyboard emulation (using the Chrome OS EC code as a base).
Secondly a TPM emulation is added. This does not include all features (the implementation is quite simplistic) but it is enough to do basic secure boot operations.
Finally, various pieces of useful infrastructure are adding, including:
- loading and saving of the emulated SDRAM to permit test runs to carry over state - loading and saving of general sandbox state (for example a driver can save its stage and reload it on the next run) - support for using bootm to load a kernel - providing a device tree for use by sandbox - block device emulation using host files - a means to jump to another U-Boot while preserving state (useful for test environments which want to run a series of tests with script-selectable state) - allowing the console to be active on start-up so that errors are not silent supressed
The block device emulation provides access to filesystems from sandbox which should make it possible to write comprehensive filesystem tests.
Major functions which still remain without sandbox support are I2C, networking and USB.
Che-Liang Chiou (1): sandbox: tpm: Fix nvwrite command
Henrik Nordström (1): sandbox: block driver using host file/device as backing store
Simon Glass (29): Add crc8 routine sandbox: Use system headers first for sandbox's os.c sandbox: Use uint64_t instead of u64 for time sandbox: Increase memory size to 32MB sandbox: spi: Adjust 'sf test' to work on sandbox sandbox: Build a device tree file for sandbox sandbox: config: Don't use 64-bit physical memory sandbox: Correct data sizes and printf() strings in fdtdec.c sandbox: Use os functions to read host device tree sandbox: Improve/augment memory allocation functions sandbox: Correct help message <arg> garbling sandbox: Allow return from board_init_f() sandbox: Implement the bootm command for sandbox sandbox: Allow the console to work earlier sandbox: Add -i option to enter interactive mode sandbox: Allow reading/writing of RAM buffer sandbox: Add facility to save/restore sandbox state sandbox: tpm: Add TPM emulation sandbox: dts: Add display and keyboard to sandbox sandbox: Add a prototype for cleanup_before_linux() cros_ec: Add an enum for the number of flash regions fdt: Add a function for reading a flash map entry cros_ec: Add a function for decoding the Chrome OS EC flashmap cros_ec: sandbox: Add Chrome OS EC emulation sandbox: Add os_jump_to_image() to run another executable sandbox: Add -j option to indicate a jump from a previous U-Boot sandbox: Add SDL library for LCD, keyboard, audio sandbox: Add a simple sound driver sandbox: Add LCD driver
Vadim Bendebury (1): cros_ec: Move EC interface into common library
Makefile | 1 + arch/sandbox/config.mk | 7 + arch/sandbox/cpu/Makefile | 12 +- arch/sandbox/cpu/cpu.c | 21 +- arch/sandbox/cpu/os.c | 187 ++++++++- arch/sandbox/cpu/sdl.c | 334 +++++++++++++++ arch/sandbox/cpu/start.c | 121 +++++- arch/sandbox/cpu/state.c | 353 ++++++++++++++++ arch/sandbox/include/asm/arch-sandbox/sound.h | 14 + arch/sandbox/include/asm/global_data.h | 2 +- arch/sandbox/include/asm/sdl.h | 20 + arch/sandbox/include/asm/state.h | 132 +++++- arch/sandbox/include/asm/types.h | 4 +- arch/sandbox/include/asm/u-boot-sandbox.h | 5 + board/samsung/smdk5250/exynos5-dt.c | 5 - board/sandbox/dts/sandbox.dts | 91 +++++ board/sandbox/sandbox/sandbox.c | 19 +- common/Makefile | 1 + common/board_f.c | 63 ++- common/cmd_sandbox.c | 64 +++ common/cmd_sf.c | 14 +- common/console.c | 16 +- common/cros_ec.c | 44 ++ common/lcd.c | 21 +- config.mk | 9 +- disk/part.c | 23 +- doc/device-tree-bindings/video/sandbox-fb.txt | 13 + drivers/block/Makefile | 1 + drivers/block/sandbox.c | 124 ++++++ drivers/misc/Makefile | 1 + drivers/misc/cros_ec.c | 50 +++ drivers/misc/cros_ec_sandbox.c | 558 ++++++++++++++++++++++++++ drivers/serial/sandbox.c | 4 + drivers/sound/Makefile | 2 + drivers/sound/sandbox.c | 23 ++ drivers/tpm/Makefile | 1 + drivers/tpm/tpm_tis_sandbox.c | 260 ++++++++++++ drivers/video/Makefile | 1 + drivers/video/sandbox_sdl.c | 70 ++++ include/config_fallbacks.h | 3 +- include/configs/sandbox.h | 9 +- include/cros_ec.h | 45 +++ include/ec_commands.h | 4 +- include/fdtdec.h | 20 + include/lcd.h | 3 + include/linux/crc8.h | 23 ++ include/os.h | 88 +++- include/part.h | 5 + include/sandboxblockdev.h | 18 + lib/Makefile | 1 + lib/crc8.c | 25 ++ lib/fdtdec.c | 34 +- 52 files changed, 2866 insertions(+), 103 deletions(-) create mode 100644 arch/sandbox/cpu/sdl.c create mode 100644 arch/sandbox/include/asm/arch-sandbox/sound.h create mode 100644 arch/sandbox/include/asm/sdl.h create mode 100644 board/sandbox/dts/sandbox.dts create mode 100644 common/cros_ec.c create mode 100644 doc/device-tree-bindings/video/sandbox-fb.txt create mode 100644 drivers/block/sandbox.c create mode 100644 drivers/misc/cros_ec_sandbox.c create mode 100644 drivers/sound/sandbox.c create mode 100644 drivers/tpm/tpm_tis_sandbox.c create mode 100644 drivers/video/sandbox_sdl.c create mode 100644 include/linux/crc8.h create mode 100644 include/sandboxblockdev.h create mode 100644 lib/crc8.c