Different CPUs may support different address widths, meaning the amount of memory they can address. Add a property for this to the cpu_info struct.
Signed-off-by: Simon Glass sjg@chromium.org Reviewed-by: Bin Meng bmeng.cn@gmail.com ---
Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: None
drivers/cpu/cpu_sandbox.c | 1 + include/cpu.h | 2 ++ test/dm/cpu.c | 1 + 3 files changed, 4 insertions(+)
diff --git a/drivers/cpu/cpu_sandbox.c b/drivers/cpu/cpu_sandbox.c index ff87e8adca3..05b384f6a45 100644 --- a/drivers/cpu/cpu_sandbox.c +++ b/drivers/cpu/cpu_sandbox.c @@ -19,6 +19,7 @@ int cpu_sandbox_get_info(struct udevice *dev, struct cpu_info *info) { info->cpu_freq = 42 * 42 * 42 * 42 * 42; info->features = 0x42424242; + info->address_width = IS_ENABLED(CONFIG_PHYS_64BIT) ? 64 : 32;
return 0; } diff --git a/include/cpu.h b/include/cpu.h index 28dd48feb8f..6b1b6b37b3b 100644 --- a/include/cpu.h +++ b/include/cpu.h @@ -44,10 +44,12 @@ enum { * * @cpu_freq: Current CPU frequency in Hz * @features: Flags for supported CPU features + * @address_width: Width of the CPU address space in bits (e.g. 32) */ struct cpu_info { ulong cpu_freq; ulong features; + uint address_width; };
struct cpu_ops { diff --git a/test/dm/cpu.c b/test/dm/cpu.c index f5f1caef716..e6dc576ea3c 100644 --- a/test/dm/cpu.c +++ b/test/dm/cpu.c @@ -33,6 +33,7 @@ static int dm_test_cpu(struct unit_test_state *uts) ut_assertok(cpu_get_info(dev, &info)); ut_asserteq(info.cpu_freq, 42 * 42 * 42 * 42 * 42); ut_asserteq(info.features, 0x42424242); + ut_asserteq(info.address_width, 32);
ut_asserteq(cpu_get_count(dev), 42);