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Fix Unisoc T618 Chipset Detection #307

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Fix Unisoc T618 Chipset Detection #307

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99a3d3a
Fix Unisoc T618 Chipset Detection
hpcnt-daniel-l Jul 7, 2025
c601512
Format chipset.c
bc-lee Aug 12, 2025
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12 changes: 7 additions & 5 deletions src/arm/linux/chipset.c
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Original file line number Diff line number Diff line change
Expand Up @@ -903,7 +903,7 @@ static bool match_sc(const char* start, const char* end, struct cpuinfo_arm_chip
}

/**
* Tries to match, case-sentitively, /Unisoc T\d{3,4}/ signature for Unisoc T
* Tries to match, case-sentitively, /Unisoc T\d{3,4}/ or /UNISOC T\d{3,4}/ signature for Unisoc T
* chipset. If match successful, extracts model information into \p chipset
* argument.
*
Expand All @@ -917,7 +917,7 @@ static bool match_sc(const char* start, const char* end, struct cpuinfo_arm_chip
* @returns true if signature matched, false otherwise.
*/
static bool match_t(const char* start, const char* end, struct cpuinfo_arm_chipset chipset[restrict static 1]) {
/* Expect 11-12 symbols: "Unisoc T" (8 symbols) + 3-4-digit model number
/* Expect 11-12 symbols: "Unisoc T" / "UNISOC T" (8 symbols) + 3-4-digit model number
*/
const size_t length = end - start;
switch (length) {
Expand All @@ -928,16 +928,18 @@ static bool match_t(const char* start, const char* end, struct cpuinfo_arm_chips
return false;
}

/* Check that string starts with "Unisoc T". The first four characters
/* Check that string starts with "Unisoc T" or "UNISOC T". The first four characters
* are loaded as 32-bit little endian word */
const uint32_t expected_unis = load_u32le(start);
if (expected_unis != UINT32_C(0x73696E55) /* "sinU" = reverse("Unis") */) {
if (expected_unis != UINT32_C(0x73696E55) /* "sinU" = reverse("Unis") */ &&
expected_unis != UINT32_C(0x53494E55) /* "SINU" = reverse("UNIS") */) {
return false;
}

/* The next four characters are loaded as 32-bit little endian word */
const uint32_t expected_oc_t = load_u32le(start + 4);
if (expected_oc_t != UINT32_C(0x5420636F) /* "T co" = reverse("oc T") */) {
if (expected_oc_t != UINT32_C(0x5420636F) /* "T co" = reverse("oc T") */ &&
expected_oc_t != UINT32_C(0x5420434F) /* "T CO" = reverse("OC T") */) {
return false;
}

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1 change: 1 addition & 0 deletions test/name/proc-cpuinfo-hardware.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -460,6 +460,7 @@ TEST(PROC_CPUINFO_HARDWARE, telechips) {

TEST(PROC_CPUINFO_HARDWARE, unisoc) {
EXPECT_EQ("Unisoc T301", parse_proc_cpuinfo_hardware("Unisoc T301", 4, 1800000));
EXPECT_EQ("Unisoc T618", parse_proc_cpuinfo_hardware("UNISOC T618", 4, 1800000));
EXPECT_EQ("Unisoc UMS312", parse_proc_cpuinfo_hardware("Unisoc UMS312", 4, 1800000));
}

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