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authorSimon Glass <sjg@chromium.org>2016-03-06 19:27:49 -0700
committerBin Meng <bmeng.cn@gmail.com>2016-03-17 10:27:22 +0800
commit740d5d34b12f49b5e6c48e06dd8f519d9563a7e3 (patch)
treea303a6b6ecd24167d18784f59221a91ab274a138 /include/cpu.h
parente23c6c28b01785547e0356667ab435ef904af531 (diff)
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cpu: Add support for microcode version and CPU ID
Some CPUs use microcode and each core can have a different version of microcode loaded. Also some CPUs support the concept of an integer ID used for identification purposes. Add support for these in the CPU uclass. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'include/cpu.h')
-rw-r--r--include/cpu.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/cpu.h b/include/cpu.h
index bfb0db2..bda5315 100644
--- a/include/cpu.h
+++ b/include/cpu.h
@@ -15,15 +15,20 @@
* device.
*
* @cpu_id: Platform-specific way of identifying the CPU.
+ * @ucode_version: Microcode version, if CPU_FEAT_UCODE is set
*/
struct cpu_platdata {
int cpu_id;
+ int ucode_version;
+ ulong device_id;
};
/* CPU features - mostly just a placeholder for now */
enum {
CPU_FEAT_L1_CACHE = 0, /* Supports level 1 cache */
CPU_FEAT_MMU = 1, /* Supports virtual memory */
+ CPU_FEAT_UCODE = 2, /* Requires/uses microcode */
+ CPU_FEAT_DEVICE_ID = 3, /* Provides a device ID */
CPU_FEAT_COUNT,
};