diff options
| author | Rob Barnes <robbarnes@google.com> | 2020-03-27 01:13:21 -0600 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-05-18 07:40:47 +0000 |
| commit | f836a234e211266d1feffd5f406a692ac0fba164 (patch) | |
| tree | 12a9a5eba6c2986ed4d2a2dbd8e1ee9873cccabc /util/apcb/README | |
| parent | 5dd76fd4cc9028f6fc3ab973dda4719abe54da39 (diff) | |
util/apcb: Add apcb_edit tool
On the Picasso architecture, the PSP is responsible for setting up DRAM
before releasing the x86. The APCB (AGESA PSP Configuration Block)
contains multiple SPDs and the GPIO numbers used to select the correct
SPD. Since the source to build the APCBs is not public, it can't be
built as part of the coreboot build. To work around this problem, we use
a template APCB and inject the relevant information.
BUG=b:147042464
Signed-off-by: Rob Barnes <robbarnes@google.com>
Change-Id: I88a09743f8e8a184c47071ee5e417f5b6bdb7467
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/2123799
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41380
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'util/apcb/README')
| -rw-r--r-- | util/apcb/README | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/util/apcb/README b/util/apcb/README new file mode 100644 index 0000000000..a765f4d9bd --- /dev/null +++ b/util/apcb/README @@ -0,0 +1,3 @@ +The necessary tools for building APCBs are not available for use by coreboot. +This tool allows patching an existing APCB binary with specific SPDs +and GPIO selection pins. |