[coreboot] Samsung 550 Chromebook own Coreboot

[John Lewis]

Looking at cbmem -c output this seems to be where the 5 seconds is 
being lost, but it's truncating the output. How can I stop cbmem from 
truncating the output so I can see what's going on?

CBFS: CBFS_HEADER_ROM_ADDRESS: 0xfffff9d0/0x800000
CBFS: CBFS location: 0x700000~0x7ff9f0, align: 64
CBFS: Looking for 'mrc.bin' starting from 0x700000.
CBFS:  - load entry 0x700000 file name (16 bytes)...
CBFS:  (unmatched file @0x700000: cmos_layout.bin)
CBFS:  - load entry 0x7004c0 file name (32 bytes)...
CBFS:  (unmatched file @0x7004c0: pci8086,0106.rom)
CBFS:  - load entry 0x710500 file name (72 bytes)...
CBFS:  (unmatched file @0x710500: cpu_microcode_blob.bin)
CBFS:  - load entry 0x7155c0 file name (32 bytes)...
CBFS:  (unmatched file @0x7155c0: fallback/romstage)
CBFS:  - load entry 0x71d8c0 file name (32 bytes)...
CBFS:  (unmatched file @0x71d8c0: fallback/coreboot_ram)
CBFS:  - load entry 0x731c80 file name (32 bytes)...
CBFS:  (unmatched file @0x731c80: fallback/payload)
CBFS:  - load entrypsmb@<B5>^?

*** Log truncated, 2146 characters dropped. ***

John.

On 31/07/2013 23:29, John Lewis wrote:

> After some toing and froing with Aaron Durbin over the last 6 hours
> this is where we are:
>
> mrc.cache is now working but cold boot still takes roughly 5 seconds 
> to
> get to SeaBIOS display. Warm boot/reset is instantaneous. Aaron says 
> the
> mrc.bin blob is not happy (and we can't have an unhappy blob now, can
> we).
>
> In order to get mrc.cache working this is what's required:
>
> 1. Remove 'select CHROMEOS' from src/mainboard/samsung/lumpy/Kconfig.
> 2. Add this patch:
>
> diff --git a/src/vendorcode/google/chromeos/gnvs.h
> b/src/vendorcode/google/chrom
> index 00fe443..5384423 100644
> --- a/src/vendorcode/google/chromeos/gnvs.h
> +++ b/src/vendorcode/google/chromeos/gnvs.h
> @@ -61,9 +61,13 @@ typedef struct {
> // dbe
> } __attribute__((packed)) chromeos_acpi_t;
>
> +#if CONFIG_CHROMEOS
> extern chromeos_acpi_t *vboot_data;
> void chromeos_init_vboot(chromeos_acpi_t *chromeos);
> void chromeos_set_me_hash(u32*, int);
> void acpi_get_vdat_info(uint64_t *vdat_addr, uint32_t *vdat_size);
> +#else
> +static inline void chromeos_init_vboot(chromeos_acpi_t *chromeos) {}
> +#endif
>
> #endif
> 3. make oldconfig
> 4. make clean
> 5. make (obviously)
>
> Additionally, to get timing information in cbmem -c and cbmem -t the
> following was necessary:
>
> 1. Add 'select LAPIC_MONOTONIC_TIMER' to
> src/mainboard/samsung/lumpy/Kconfig
> 2. make oldconfig
> 3. make (again obviously)
>
> The cbmem output is attached. Where to go from here? Many thanks to
> Aaron for all his help.