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FRET-qemu/hw/microblaze/petalogix_ml605_mmu.c
Philippe Mathieu-Daudé e87c93df11 hw/ssi/xilinx_spi: Make device endianness configurable 
Replace the DEVICE_NATIVE_ENDIAN MemoryRegionOps by a pair of
DEVICE_LITTLE_ENDIAN / DEVICE_BIG_ENDIAN.

Add the "endianness" property to select the device endianness.
This property is unspecified by default, and machines need to
set it explicitly.

Set the proper endianness on the single machine using the
device.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250213122217.62654-7-philmd@linaro.org>
2025-02-16 14:34:57 +01:00

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/*
* Model of Petalogix linux reference design targeting Xilinx Spartan ml605
* board.
*
* Copyright (c) 2011 Michal Simek <monstr@monstr.eu>
* Copyright (c) 2011 PetaLogix
* Copyright (c) 2009 Edgar E. Iglesias.
*
* 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 "qemu/osdep.h"
#include "qemu/units.h"
#include "qapi/error.h"
#include "cpu.h"
#include "hw/sysbus.h"
#include "net/net.h"
#include "hw/block/flash.h"
#include "system/system.h"
#include "hw/boards.h"
#include "hw/char/serial-mm.h"
#include "hw/qdev-properties.h"
#include "exec/address-spaces.h"
#include "hw/ssi/ssi.h"
#include "boot.h"
#include "hw/stream.h"
#define LMB_BRAM_SIZE (128 * KiB)
#define FLASH_SIZE (32 * MiB)
#define BINARY_DEVICE_TREE_FILE "petalogix-ml605.dtb"
#define NUM_SPI_FLASHES 4
#define SPI_BASEADDR 0x40a00000
#define MEMORY_BASEADDR 0x50000000
#define FLASH_BASEADDR 0x86000000
#define INTC_BASEADDR 0x81800000
#define TIMER_BASEADDR 0x83c00000
#define UART16550_BASEADDR 0x83e00000
#define AXIENET_BASEADDR 0x82780000
#define AXIDMA_BASEADDR 0x84600000
#define AXIDMA_IRQ1 0
#define AXIDMA_IRQ0 1
#define TIMER_IRQ 2
#define AXIENET_IRQ 3
#define SPI_IRQ 4
#define UART16550_IRQ 5
static void
petalogix_ml605_init(MachineState *machine)
{
ram_addr_t ram_size = machine->ram_size;
MemoryRegion *address_space_mem = get_system_memory();
DeviceState *dev, *dma, *eth0;
Object *ds, *cs;
MicroBlazeCPU *cpu;
SysBusDevice *busdev;
DriveInfo *dinfo;
int i;
MemoryRegion *phys_lmb_bram = g_new(MemoryRegion, 1);
MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
qemu_irq irq[32];
EndianMode endianness = TARGET_BIG_ENDIAN ? ENDIAN_MODE_BIG
: ENDIAN_MODE_LITTLE;
/* init CPUs */
cpu = MICROBLAZE_CPU(object_new(TYPE_MICROBLAZE_CPU));
object_property_set_str(OBJECT(cpu), "version", "8.10.a", &error_abort);
/* Use FPU but don't use floating point conversion and square
* root instructions
*/
object_property_set_int(OBJECT(cpu), "use-fpu", 1, &error_abort);
object_property_set_bool(OBJECT(cpu), "dcache-writeback", true,
&error_abort);
object_property_set_bool(OBJECT(cpu), "little-endian", true, &error_abort);
qdev_realize(DEVICE(cpu), NULL, &error_abort);
/* Attach emulated BRAM through the LMB. */
memory_region_init_ram(phys_lmb_bram, NULL, "petalogix_ml605.lmb_bram",
LMB_BRAM_SIZE, &error_fatal);
memory_region_add_subregion(address_space_mem, 0x00000000, phys_lmb_bram);
memory_region_init_ram(phys_ram, NULL, "petalogix_ml605.ram", ram_size,
&error_fatal);
memory_region_add_subregion(address_space_mem, MEMORY_BASEADDR, phys_ram);
dinfo = drive_get(IF_PFLASH, 0, 0);
/* 5th parameter 2 means bank-width
* 10th parameter 0 means little-endian */
pflash_cfi01_register(FLASH_BASEADDR, "petalogix_ml605.flash", FLASH_SIZE,
dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
64 * KiB, 2, 0x89, 0x18, 0x0000, 0x0, 0);
dev = qdev_new("xlnx.xps-intc");
qdev_prop_set_enum(dev, "endianness", endianness);
qdev_prop_set_uint32(dev, "kind-of-intr", 1 << TIMER_IRQ);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, INTC_BASEADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
qdev_get_gpio_in(DEVICE(cpu), MB_CPU_IRQ));
for (i = 0; i < 32; i++) {
irq[i] = qdev_get_gpio_in(dev, i);
}
serial_mm_init(address_space_mem, UART16550_BASEADDR + 0x1000, 2,
irq[UART16550_IRQ], 115200, serial_hd(0),
DEVICE_LITTLE_ENDIAN);
/* 2 timers at irq 2 @ 100 Mhz. */
dev = qdev_new("xlnx.xps-timer");
qdev_prop_set_enum(dev, "endianness", endianness);
qdev_prop_set_uint32(dev, "one-timer-only", 0);
qdev_prop_set_uint32(dev, "clock-frequency", 100 * 1000000);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, TIMER_BASEADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq[TIMER_IRQ]);
/* axi ethernet and dma initialization. */
eth0 = qdev_new("xlnx.axi-ethernet");
dma = qdev_new("xlnx.axi-dma");
/* FIXME: attach to the sysbus instead */
object_property_add_child(qdev_get_machine(), "xilinx-eth", OBJECT(eth0));
object_property_add_child(qdev_get_machine(), "xilinx-dma", OBJECT(dma));
ds = object_property_get_link(OBJECT(dma),
"axistream-connected-target", NULL);
cs = object_property_get_link(OBJECT(dma),
"axistream-control-connected-target", NULL);
qemu_configure_nic_device(eth0, true, NULL);
qdev_prop_set_uint32(eth0, "rxmem", 0x1000);
qdev_prop_set_uint32(eth0, "txmem", 0x1000);
object_property_set_link(OBJECT(eth0), "axistream-connected", ds,
&error_abort);
object_property_set_link(OBJECT(eth0), "axistream-control-connected", cs,
&error_abort);
sysbus_realize_and_unref(SYS_BUS_DEVICE(eth0), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(eth0), 0, AXIENET_BASEADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(eth0), 0, irq[AXIENET_IRQ]);
ds = object_property_get_link(OBJECT(eth0),
"axistream-connected-target", NULL);
cs = object_property_get_link(OBJECT(eth0),
"axistream-control-connected-target", NULL);
qdev_prop_set_uint32(dma, "freqhz", 100 * 1000000);
object_property_set_link(OBJECT(dma), "axistream-connected", ds,
&error_abort);
object_property_set_link(OBJECT(dma), "axistream-control-connected", cs,
&error_abort);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dma), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(dma), 0, AXIDMA_BASEADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(dma), 0, irq[AXIDMA_IRQ0]);
sysbus_connect_irq(SYS_BUS_DEVICE(dma), 1, irq[AXIDMA_IRQ1]);
{
SSIBus *spi;
dev = qdev_new("xlnx.xps-spi");
qdev_prop_set_enum(dev, "endianness", endianness);
qdev_prop_set_uint8(dev, "num-ss-bits", NUM_SPI_FLASHES);
busdev = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(busdev, &error_fatal);
sysbus_mmio_map(busdev, 0, SPI_BASEADDR);
sysbus_connect_irq(busdev, 0, irq[SPI_IRQ]);
spi = (SSIBus *)qdev_get_child_bus(dev, "spi");
for (i = 0; i < NUM_SPI_FLASHES; i++) {
dinfo = drive_get(IF_MTD, 0, i);
qemu_irq cs_line;
dev = qdev_new("n25q128");
if (dinfo) {
qdev_prop_set_drive_err(dev, "drive",
blk_by_legacy_dinfo(dinfo),
&error_fatal);
}
qdev_prop_set_uint8(dev, "cs", i);
qdev_realize_and_unref(dev, BUS(spi), &error_fatal);
cs_line = qdev_get_gpio_in_named(dev, SSI_GPIO_CS, 0);
sysbus_connect_irq(busdev, i+1, cs_line);
}
}
/* setup PVR to match kernel settings */
cpu->cfg.pvr_regs[4] = 0xc56b8000;
cpu->cfg.pvr_regs[5] = 0xc56be000;
cpu->cfg.pvr_regs[10] = 0x0e000000; /* virtex 6 */
microblaze_load_kernel(cpu, true, MEMORY_BASEADDR, ram_size,
machine->initrd_filename,
BINARY_DEVICE_TREE_FILE,
NULL);
}
static void petalogix_ml605_machine_init(MachineClass *mc)
{
#if TARGET_BIG_ENDIAN
mc->desc = "PetaLogix linux refdesign for xilinx ml605 (big endian)";
mc->deprecation_reason = "big endian support is not tested";
#else
mc->desc = "PetaLogix linux refdesign for xilinx ml605 (little endian)";
#endif
mc->init = petalogix_ml605_init;
}
DEFINE_MACHINE("petalogix-ml605", petalogix_ml605_machine_init)
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