Merge tag 'or1k-pull-request-20220515' of https://github.com/stffrdhrn/qemu into staging

OpenRISC Fixes for 7.0

 - A few or1ksim fixes and enhancements
 - A fix for OpenRISC tcg backend around delay slot handling

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* tag 'or1k-pull-request-20220515' of https://github.com/stffrdhrn/qemu:
  target/openrisc: Do not reset delay slot flag on early tb exit
  hw/openrisc: use right OMPIC size variable
  hw/openrisc: support 4 serial ports in or1ksim
  hw/openrisc: page-align FDT address

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

2 files changed, 30 insertions, 9 deletions

diff --git a/hw/openrisc/openrisc_sim.c b/hw/openrisc/openrisc_sim.c
index 8184caa..35adce1 100644
--- a/hw/openrisc/openrisc_sim.c
+++ b/hw/openrisc/openrisc_sim.c
@@ -71,6 +71,10 @@ enum {
     OR1KSIM_ETHOC_IRQ = 4,
 };
 
+enum {
+    OR1KSIM_UART_COUNT = 4
+};
+
 static const struct MemmapEntry {
     hwaddr base;
     hwaddr size;
@@ -78,7 +82,7 @@ static const struct MemmapEntry {
     [OR1KSIM_DRAM] =      { 0x00000000,          0 },
     [OR1KSIM_UART] =      { 0x90000000,      0x100 },
     [OR1KSIM_ETHOC] =     { 0x92000000,      0x800 },
-    [OR1KSIM_OMPIC] =     { 0x98000000,         16 },
+    [OR1KSIM_OMPIC] =     { 0x98000000, OR1KSIM_CPUS_MAX * 8 },
 };
 
 static struct openrisc_boot_info {
@@ -239,11 +243,13 @@ static void openrisc_sim_ompic_init(Or1ksimState *state, hwaddr base,
 
 static void openrisc_sim_serial_init(Or1ksimState *state, hwaddr base,
                                      hwaddr size, int num_cpus,
-                                     OpenRISCCPU *cpus[], int irq_pin)
+                                     OpenRISCCPU *cpus[], int irq_pin,
+                                     int uart_idx)
 {
     void *fdt = state->fdt;
     char *nodename;
     qemu_irq serial_irq;
+    char alias[sizeof("uart0")];
     int i;
 
     if (num_cpus > 1) {
@@ -258,7 +264,8 @@ static void openrisc_sim_serial_init(Or1ksimState *state, hwaddr base,
         serial_irq = get_cpu_irq(cpus, 0, irq_pin);
     }
     serial_mm_init(get_system_memory(), base, 0, serial_irq, 115200,
-                   serial_hd(0), DEVICE_NATIVE_ENDIAN);
+                   serial_hd(OR1KSIM_UART_COUNT - uart_idx - 1),
+                   DEVICE_NATIVE_ENDIAN);
 
     /* Add device tree node for serial. */
     nodename = g_strdup_printf("/serial@%" HWADDR_PRIx, base);
@@ -271,7 +278,8 @@ static void openrisc_sim_serial_init(Or1ksimState *state, hwaddr base,
 
     /* The /chosen node is created during fdt creation. */
     qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename);
-    qemu_fdt_setprop_string(fdt, "/aliases", "uart0", nodename);
+    snprintf(alias, sizeof(alias), "uart%d", uart_idx);
+    qemu_fdt_setprop_string(fdt, "/aliases", alias, nodename);
     g_free(nodename);
 }
 
@@ -356,7 +364,7 @@ static uint32_t openrisc_load_fdt(Or1ksimState *state, hwaddr load_start,
     }
 
     /* We put fdt right after the kernel and/or initrd. */
-    fdt_addr = ROUND_UP(load_start, 4);
+    fdt_addr = TARGET_PAGE_ALIGN(load_start);
 
     ret = fdt_pack(fdt);
     /* Should only fail if we've built a corrupted tree */
@@ -410,13 +418,15 @@ static void openrisc_sim_init(MachineState *machine)
 
     if (smp_cpus > 1) {
         openrisc_sim_ompic_init(state, or1ksim_memmap[OR1KSIM_OMPIC].base,
-                                or1ksim_memmap[OR1KSIM_UART].size,
+                                or1ksim_memmap[OR1KSIM_OMPIC].size,
                                 smp_cpus, cpus, OR1KSIM_OMPIC_IRQ);
     }
 
-    openrisc_sim_serial_init(state, or1ksim_memmap[OR1KSIM_UART].base,
-                             or1ksim_memmap[OR1KSIM_UART].size, smp_cpus, cpus,
-                             OR1KSIM_UART_IRQ);
+    for (n = 0; n < OR1KSIM_UART_COUNT; ++n)
+        openrisc_sim_serial_init(state, or1ksim_memmap[OR1KSIM_UART].base +
+                                        or1ksim_memmap[OR1KSIM_UART].size * n,
+                                 or1ksim_memmap[OR1KSIM_UART].size,
+                                 smp_cpus, cpus, OR1KSIM_UART_IRQ, n);
 
     load_addr = openrisc_load_kernel(ram_size, kernel_filename);
     if (load_addr > 0) {
diff --git a/target/openrisc/cpu.c b/target/openrisc/cpu.c
index dfbafc5..41d1b2a 100644
--- a/target/openrisc/cpu.c
+++ b/target/openrisc/cpu.c
@@ -21,6 +21,7 @@
 #include "qapi/error.h"
 #include "qemu/qemu-print.h"
 #include "cpu.h"
+#include "exec/exec-all.h"
 
 static void openrisc_cpu_set_pc(CPUState *cs, vaddr value)
 {
@@ -30,6 +31,15 @@ static void openrisc_cpu_set_pc(CPUState *cs, vaddr value)
     cpu->env.dflag = 0;
 }
 
+static void openrisc_cpu_synchronize_from_tb(CPUState *cs,
+                                             const TranslationBlock *tb)
+{
+    OpenRISCCPU *cpu = OPENRISC_CPU(cs);
+
+    cpu->env.pc = tb->pc;
+}
+
+
 static bool openrisc_cpu_has_work(CPUState *cs)
 {
     return cs->interrupt_request & (CPU_INTERRUPT_HARD |
@@ -186,6 +196,7 @@ static const struct SysemuCPUOps openrisc_sysemu_ops = {
 
 static const struct TCGCPUOps openrisc_tcg_ops = {
     .initialize = openrisc_translate_init,
+    .synchronize_from_tb = openrisc_cpu_synchronize_from_tb,
 
 #ifndef CONFIG_USER_ONLY
     .tlb_fill = openrisc_cpu_tlb_fill,