Hi Simon,
On Thu, Jan 29, 2015 at 2:05 AM, Simon Glass sjg@chromium.org wrote:
Hi Bin,
On 28 January 2015 at 07:19, Bin Meng bmeng.cn@gmail.com wrote:
This series adds the first step of bare support for the Intel Quark SoC support which can be validated on Intel Galileo board.
Intel Quark is a line of 32-bit x86 SoCs by Intel, designed for small size and low power consumption, and targeted at new markets including wearable devices. They are smaller and slower than Atom processors and consume less power. They lack support for SIMD instruction sets (such as MMX and SSE) and only support embedded operating systems. Quark powers the Intel Galileo developer microcontroller board. The CPU instruction set is the same as Pentium (P54C/i586) CPU.
Intel decided to completely publish Quark's hardware specification to software developers, which includes an SoC datasheet, a UEFI Firmware Writer's Guide, and a complete reference source code for the UEFI BIOS which is pre-flahsed on the Galileo board. As of today, the only BIOS for Galileo is the Intel one with UEFI inteface only. There is no CSM support yet in that BIOS, neither any 3rd party BIOS vendor provides support to Quark SoC.
So no binary blobs?
Ah, forget to mention, only one binary blob (exactly 8KiB) is needed which is rmu.bin for Remote Management Unit. Not like FSP, U-Boot will not call into the binary. The binary is needed by the Quark SoC itself. Everything on Quark will have its source codes including MRC.
Note there are two generation of Galileo boards, aka gen1 and gen2. Currently the development work is on gen2, but once we get it boot, we can easily add the gen1 board (old version).
With this patch series, the generated u-boot.rom could boot the Intel Galileo board up to fdt relocate, where U-Boot hangs because the DRAM is not initializaed yet. A follow up patch series will be sent soon to add support for Memory Reference Code (MRC).
Note this patch series may need rebase after Simon's Minnowmax support patch series is applied.
You can rebase on x86/minnow-working if you like.
I will rebase this on u-boot-x86/master since I noticed that you have already applied the minnowmax patch series.
[snip]
Regards, Bin