[Qemu-devel] [PATCH 2/2] target-xtensa: provide HW confg ID registers

[Max Filippov]

Signed-off-by: Max Filippov <jcmvb...@gmail.com>
---
 target-xtensa/cpu.c          | 2 ++
 target-xtensa/cpu.h          | 4 ++++
 target-xtensa/overlay_tool.h | 9 ++++++++-
 target-xtensa/translate.c    | 9 +++++++--
 4 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/target-xtensa/cpu.c b/target-xtensa/cpu.c
index 66a0c8a..16f01de 100644
--- a/target-xtensa/cpu.c
+++ b/target-xtensa/cpu.c
@@ -59,6 +59,8 @@ static void xtensa_cpu_reset(CPUState *s)
     env->sregs[CACHEATTR] = 0x22222222;
     env->sregs[ATOMCTL] = xtensa_option_enabled(env->config,
             XTENSA_OPTION_ATOMCTL) ? 0x28 : 0x15;
+    env->sregs[CONFIGID0] = env->config->configid[0];
+    env->sregs[CONFIGID1] = env->config->configid[1];
 
     env->pending_irq_level = 0;
     reset_mmu(env);
diff --git a/target-xtensa/cpu.h b/target-xtensa/cpu.h
index afdb340..9c5a55b 100644
--- a/target-xtensa/cpu.h
+++ b/target-xtensa/cpu.h
@@ -135,9 +135,11 @@ enum {
     IBREAKA = 128,
     DBREAKA = 144,
     DBREAKC = 160,
+    CONFIGID0 = 176,
     EPC1 = 177,
     DEPC = 192,
     EPS2 = 194,
+    CONFIGID1 = 208,
     EXCSAVE1 = 209,
     CPENABLE = 224,
     INTSET = 226,
@@ -322,6 +324,8 @@ typedef struct XtensaConfig {
     unsigned nibreak;
     unsigned ndbreak;
 
+    uint32_t configid[2];
+
     uint32_t clock_freq_khz;
 
     xtensa_tlb itlb;
diff --git a/target-xtensa/overlay_tool.h b/target-xtensa/overlay_tool.h
index 25b7970..5a1353e 100644
--- a/target-xtensa/overlay_tool.h
+++ b/target-xtensa/overlay_tool.h
@@ -320,6 +320,12 @@
     .nibreak = XCHAL_NUM_IBREAK, \
     .ndbreak = XCHAL_NUM_DBREAK
 
+#define CONFIG_SECTION \
+    .configid = { \
+        XCHAL_HW_CONFIGID0, \
+        XCHAL_HW_CONFIGID1, \
+    }
+
 #define DEFAULT_SECTIONS \
     .options = XTENSA_OPTIONS, \
     .nareg = XCHAL_NUM_AREGS, \
@@ -327,7 +333,8 @@
     EXCEPTIONS_SECTION, \
     INTERRUPTS_SECTION, \
     TLB_SECTION, \
-    DEBUG_SECTION
+    DEBUG_SECTION, \
+    CONFIG_SECTION
 
 
 #if XCHAL_NUM_INTLEVELS + XCHAL_HAVE_NMI + 1 <= 2
diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c
index 6061968..22c0735 100644
--- a/target-xtensa/translate.c
+++ b/target-xtensa/translate.c
@@ -98,12 +98,15 @@ typedef struct XtensaReg {
 
 #define XTENSA_REG(regname, opt) XTENSA_REG_ACCESS(regname, opt, SR_RWX)
 
-#define XTENSA_REG_BITS(regname, opt) { \
+#define XTENSA_REG_BITS_ACCESS(regname, opt, acc) { \
         .name = (regname), \
         .opt_bits = (opt), \
-        .access = SR_RWX, \
+        .access = (acc), \
     }
 
+#define XTENSA_REG_BITS(regname, opt) \
+    XTENSA_REG_BITS_ACCESS(regname, opt, SR_RWX)
+
 static const XtensaReg sregnames[256] = {
     [LBEG] = XTENSA_REG("LBEG", XTENSA_OPTION_LOOP),
     [LEND] = XTENSA_REG("LEND", XTENSA_OPTION_LOOP),
@@ -134,6 +137,7 @@ static const XtensaReg sregnames[256] = {
     [DBREAKA + 1] = XTENSA_REG("DBREAKA1", XTENSA_OPTION_DEBUG),
     [DBREAKC] = XTENSA_REG("DBREAKC0", XTENSA_OPTION_DEBUG),
     [DBREAKC + 1] = XTENSA_REG("DBREAKC1", XTENSA_OPTION_DEBUG),
+    [CONFIGID0] = XTENSA_REG_BITS_ACCESS("CONFIGID0", XTENSA_OPTION_ALL, SR_R),
     [EPC1] = XTENSA_REG("EPC1", XTENSA_OPTION_EXCEPTION),
     [EPC1 + 1] = XTENSA_REG("EPC2", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
     [EPC1 + 2] = XTENSA_REG("EPC3", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
@@ -148,6 +152,7 @@ static const XtensaReg sregnames[256] = {
     [EPS2 + 3] = XTENSA_REG("EPS5", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
     [EPS2 + 4] = XTENSA_REG("EPS6", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
     [EPS2 + 5] = XTENSA_REG("EPS7", XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
+    [CONFIGID1] = XTENSA_REG_BITS_ACCESS("CONFIGID1", XTENSA_OPTION_ALL, SR_R),
     [EXCSAVE1] = XTENSA_REG("EXCSAVE1", XTENSA_OPTION_EXCEPTION),
     [EXCSAVE1 + 1] = XTENSA_REG("EXCSAVE2",
             XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT),
-- 
1.8.1.4