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[yellowstone] Add a way to retrieve to denali client from yellowstone

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This commit is contained in:
Drew Galbraith 2023-07-05 16:03:20 -07:00
parent b83385dfa6
commit 29d9923f5a
10 changed files with 99 additions and 7 deletions
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10
sys/yellowstone/hw/gpt.cpp
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@ -9,6 +9,9 @@ const uint64_t kSectorSize = 512;
const uint64_t kGptPartitionSignature = 0x54524150'20494645;
const uint64_t kLfsDataLow = 0x477284830fc63daf;
const uint64_t kLfsDataHigh = 0xe47d47d8693d798e;
struct MbrPartition {
uint8_t boot_indicator;
uint8_t starting_chs[3];
@ -99,6 +102,13 @@ glcr::ErrorCode GptReader::ParsePartitionTables() {
dbgln("P Guid: %lx-%lx", entry->part_guid_high, entry->part_guid_low);
dbgln("LBA: %lx, %lx", entry->lba_start, entry->lba_end);
dbgln("Attrs: %lx", entry->attributes);
// For now we hardcode these values to the type that is created in our
// setup script.
// FIXME: Set up our own root partition type guid at some point.
if (entry->type_guid_low == kLfsDataLow &&
entry->type_guid_high == kLfsDataHigh) {
primary_partition_lba_ = entry->lba_start;
}
}
}

3
sys/yellowstone/hw/gpt.h
View file

@ -10,6 +10,9 @@ class GptReader {
glcr::ErrorCode ParsePartitionTables();
uint64_t GetPrimaryPartitionLba() { return primary_partition_lba_; }
private:
glcr::UniquePtr<DenaliClient> denali_;
uint64_t primary_partition_lba_;
};