Most of the functionality is extracted from hw/ppc/prep.c.
Also add support for board identification/equipment registers.
Document it for the IBM 43p emulation.
Cc: Julio Guerra gu...@julio.in
Signed-off-by: Hervé Poussineau hpous...@reactos.org
---
docs/ibm_43p.cfg |5 +
hw/ppc/Makefile.objs |1 +
hw/ppc/prep_systemio.c | 298
trace-events |4 +
4 files changed, 308 insertions(+)
create mode 100644 hw/ppc/prep_systemio.c
diff --git a/docs/ibm_43p.cfg b/docs/ibm_43p.cfg
index 70bbfdb..653d50b 100644
--- a/docs/ibm_43p.cfg
+++ b/docs/ibm_43p.cfg
@@ -36,3 +36,8 @@
iobase = 0x170
iobase2 = 0x376
irq = 15
+
+[device]
+ driver = prep-systemio
+ ibm-planar-id = 0xc0
+ equipment = 0xff
diff --git a/hw/ppc/Makefile.objs b/hw/ppc/Makefile.objs
index be00d1d..cd1eb1b 100644
--- a/hw/ppc/Makefile.objs
+++ b/hw/ppc/Makefile.objs
@@ -9,6 +9,7 @@ obj-y += ppc405_boards.o ppc4xx_devs.o ppc405_uc.o
ppc440_bamboo.o
obj-y += ppc4xx_pci.o
# PReP
obj-y += prep.o
+obj-y += prep_systemio.o
# OldWorld PowerMac
obj-y += mac_oldworld.o
# NewWorld PowerMac
diff --git a/hw/ppc/prep_systemio.c b/hw/ppc/prep_systemio.c
new file mode 100644
index 000..1ea511c
--- /dev/null
+++ b/hw/ppc/prep_systemio.c
@@ -0,0 +1,298 @@
+/*
+ * QEMU PReP System I/O emulation
+ *
+ * Copyright (c) 2003-2007 Jocelyn Mayer
+ * Copyright (c) 2010-2012 Herve Poussineau
+ * Copyright (c) 2010-2011 Andreas Faerber
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the Software), to
deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include hw/isa/isa.h
+#include exec/address-spaces.h
+#include qemu/error-report.h /* for error_report() */
+#include sysemu/sysemu.h /* for vm_stop() */
+#include trace.h
+
+#define TYPE_PREP_SYSTEMIO prep-systemio
+#define PREP_SYSTEMIO(obj) \
+OBJECT_CHECK(PrepSystemIoState, (obj), TYPE_PREP_SYSTEMIO)
+
+/* Bit as defined in PowerPC Reference Plaform v1.1, sect. 6.1.5, p. 132 */
+#define BIT(n) (1 (7 - (n)))
+
+typedef struct PrepSystemIoState {
+ISADevice parent_obj;
+MemoryRegion ppc_parity_mem;
+
+qemu_irq non_contiguous_io_map_irq;
+uint8_t sreset; /* 0x0092 */
+uint8_t equipment; /* 0x080c */
+uint8_t system_control; /* 0x081c */
+uint8_t iomap_type; /* 0x0850 */
+uint8_t ibm_planar_id; /* 0x0852 */
+qemu_irq softreset_irq;
+} PrepSystemIoState;
+
+/* PORT 0092 -- Special Port 92 (Read/Write) */
+
+enum {
+PORT0092_SOFTRESET = BIT(7),
+PORT0092_LE_MODE= BIT(6),
+};
+
+static void prep_port0092_write(void *opaque, uint32_t addr, uint32_t val)
+{
+PrepSystemIoState *s = opaque;
+
+trace_prep_systemio_write(addr, val);
+
+if ((val PORT0092_SOFTRESET) != 0) {
+qemu_irq_raise(s-softreset_irq);
+s-sreset = 1;
+} else {
+qemu_irq_lower(s-softreset_irq);
+s-sreset = 0;
+}
+
+if ((val PORT0092_LE_MODE) != 0) {
+/* XXX Not supported yet */
+error_report(little-endian mode not supported);
+vm_stop(RUN_STATE_PAUSED);
+} else {
+/* Nothing to do */
+}
+}
+
+static uint32_t prep_port0092_read(void *opaque, uint32_t addr)
+{
+PrepSystemIoState *s = opaque;
+/* XXX LE mode unsupported */
+trace_prep_systemio_read(addr, 0);
+return s-sreset;
+}
+
+/* PORT 0808 -- Hardfile Light Register (Write Only) */
+
+enum {
+PORT0808_HARDFILE_LIGHT_ON = BIT(7),
+};
+
+static void prep_port0808_write(void *opaque, uint32_t addr, uint32_t val)
+{
+trace_prep_systemio_write(addr, val);
+}
+
+/* PORT 0810 -- Password Protect 1 Register (Write Only) */
+
+/* reset by port 0x4D in the SIO */
+static void prep_port0810_write(void *opaque, uint32_t addr, uint32_t val)
+{
+trace_prep_systemio_write(addr, val);
+}
+
+/* PORT 0812 -- Password Protect 2 Register (Write Only) */
+
+/* reset by port 0x4D in the SIO */
+static void prep_port0812_write(void *opaque, uint32_t addr, uint32_t val)
+{
+
