AArch32: Add support in TF libraries
This patch adds AArch32 support to cpu ops, context management,
per-cpu data and spinlock libraries. The `entrypoint_info`
structure is modified to add support for AArch32 register
arguments. The CPU operations for AEM generic cpu in AArch32
mode is also added.
Change-Id: I1e52e79f498661d8f31f1e7b3a29e222bc7a4483
diff --git a/include/lib/el3_runtime/cpu_data.h b/include/lib/el3_runtime/cpu_data.h
index 4fc801b..910b1534 100644
--- a/include/lib/el3_runtime/cpu_data.h
+++ b/include/lib/el3_runtime/cpu_data.h
@@ -31,16 +31,28 @@
#ifndef __CPU_DATA_H__
#define __CPU_DATA_H__
+#ifdef AARCH32
+
+#if CRASH_REPORTING
+#error "Crash reporting is not supported in AArch32"
+#endif
+#define CPU_DATA_CPU_OPS_PTR 0x0
+
+#else /* AARCH32 */
+
/* Offsets for the cpu_data structure */
#define CPU_DATA_CRASH_BUF_OFFSET 0x18
+/* need enough space in crash buffer to save 8 registers */
+#define CPU_DATA_CRASH_BUF_SIZE 64
+#define CPU_DATA_CPU_OPS_PTR 0x10
+
+#endif /* AARCH32 */
+
#if CRASH_REPORTING
#define CPU_DATA_LOG2SIZE 7
#else
#define CPU_DATA_LOG2SIZE 6
#endif
-/* need enough space in crash buffer to save 8 registers */
-#define CPU_DATA_CRASH_BUF_SIZE 64
-#define CPU_DATA_CPU_OPS_PTR 0x10
#ifndef __ASSEMBLY__
@@ -77,7 +89,9 @@
* used for this.
******************************************************************************/
typedef struct cpu_data {
+#ifndef AARCH32
void *cpu_context[2];
+#endif
uintptr_t cpu_ops_ptr;
#if CRASH_REPORTING
u_register_t crash_buf[CPU_DATA_CRASH_BUF_SIZE >> 3];
@@ -104,12 +118,15 @@
struct cpu_data *_cpu_data_by_index(uint32_t cpu_index);
+#ifndef AARCH32
/* Return the cpu_data structure for the current CPU. */
static inline struct cpu_data *_cpu_data(void)
{
return (cpu_data_t *)read_tpidr_el3();
}
-
+#else
+struct cpu_data *_cpu_data(void);
+#endif
/**************************************************************************
* APIs for initialising and accessing per-cpu data