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qemu-patch-raspberry4/hw/versatilepb.c
Peter Maydell 242ea2c6bc versatilepb: Implement SYS_CLCD mux control register bits 
On the Versatile PB, PL110 graphics adaptor only natively supports
5551 pixel format; an external mux swaps bits around to allow
RGB565 and BGR565, under the control of bits [1:0] in the SYS_CLCD
system register.

Implement these SYS_CLCD register bits, and use a gpio line to
feed them out of the system register model, across the versatilepb
board and into the pl110 so we can select the right format.

This is necessary as recent Linux versatile kernels default to
programming the CLCD and mux for 16 bit BGR rather than 16 bit RGB.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2011-08-17 23:01:21 +00:00

370 lines
11 KiB
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/*
* ARM Versatile Platform/Application Baseboard System emulation.
*
* Copyright (c) 2005-2007 CodeSourcery.
* Written by Paul Brook
*
* This code is licensed under the GPL.
*/
#include "sysbus.h"
#include "arm-misc.h"
#include "primecell.h"
#include "devices.h"
#include "net.h"
#include "sysemu.h"
#include "pci.h"
#include "usb-ohci.h"
#include "boards.h"
#include "blockdev.h"
/* Primary interrupt controller. */
typedef struct vpb_sic_state
{
SysBusDevice busdev;
uint32_t level;
uint32_t mask;
uint32_t pic_enable;
qemu_irq parent[32];
int irq;
} vpb_sic_state;
static const VMStateDescription vmstate_vpb_sic = {
.name = "versatilepb_sic",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(level, vpb_sic_state),
VMSTATE_UINT32(mask, vpb_sic_state),
VMSTATE_UINT32(pic_enable, vpb_sic_state),
VMSTATE_END_OF_LIST()
}
};
static void vpb_sic_update(vpb_sic_state *s)
{
uint32_t flags;
flags = s->level & s->mask;
qemu_set_irq(s->parent[s->irq], flags != 0);
}
static void vpb_sic_update_pic(vpb_sic_state *s)
{
int i;
uint32_t mask;
for (i = 21; i <= 30; i++) {
mask = 1u << i;
if (!(s->pic_enable & mask))
continue;
qemu_set_irq(s->parent[i], (s->level & mask) != 0);
}
}
static void vpb_sic_set_irq(void *opaque, int irq, int level)
{
vpb_sic_state *s = (vpb_sic_state *)opaque;
if (level)
s->level |= 1u << irq;
else
s->level &= ~(1u << irq);
if (s->pic_enable & (1u << irq))
qemu_set_irq(s->parent[irq], level);
vpb_sic_update(s);
}
static uint32_t vpb_sic_read(void *opaque, target_phys_addr_t offset)
{
vpb_sic_state *s = (vpb_sic_state *)opaque;
switch (offset >> 2) {
case 0: /* STATUS */
return s->level & s->mask;
case 1: /* RAWSTAT */
return s->level;
case 2: /* ENABLE */
return s->mask;
case 4: /* SOFTINT */
return s->level & 1;
case 8: /* PICENABLE */
return s->pic_enable;
default:
printf ("vpb_sic_read: Bad register offset 0x%x\n", (int)offset);
return 0;
}
}
static void vpb_sic_write(void *opaque, target_phys_addr_t offset,
uint32_t value)
{
vpb_sic_state *s = (vpb_sic_state *)opaque;
switch (offset >> 2) {
case 2: /* ENSET */
s->mask |= value;
break;
case 3: /* ENCLR */
s->mask &= ~value;
break;
case 4: /* SOFTINTSET */
if (value)
s->mask |= 1;
break;
case 5: /* SOFTINTCLR */
if (value)
s->mask &= ~1u;
break;
case 8: /* PICENSET */
s->pic_enable |= (value & 0x7fe00000);
vpb_sic_update_pic(s);
break;
case 9: /* PICENCLR */
s->pic_enable &= ~value;
vpb_sic_update_pic(s);
break;
default:
printf ("vpb_sic_write: Bad register offset 0x%x\n", (int)offset);
return;
}
vpb_sic_update(s);
}
static CPUReadMemoryFunc * const vpb_sic_readfn[] = {
vpb_sic_read,
vpb_sic_read,
vpb_sic_read
};
static CPUWriteMemoryFunc * const vpb_sic_writefn[] = {
vpb_sic_write,
vpb_sic_write,
vpb_sic_write
};
static int vpb_sic_init(SysBusDevice *dev)
{
vpb_sic_state *s = FROM_SYSBUS(vpb_sic_state, dev);
int iomemtype;
int i;
qdev_init_gpio_in(&dev->qdev, vpb_sic_set_irq, 32);
for (i = 0; i < 32; i++) {
sysbus_init_irq(dev, &s->parent[i]);
}
s->irq = 31;
iomemtype = cpu_register_io_memory(vpb_sic_readfn,
vpb_sic_writefn, s,
DEVICE_NATIVE_ENDIAN);
sysbus_init_mmio(dev, 0x1000, iomemtype);
return 0;
}
/* Board init. */
/* The AB and PB boards both use the same core, just with different
peripherans and expansion busses. For now we emulate a subset of the
PB peripherals and just change the board ID. */
static struct arm_boot_info versatile_binfo;
static void versatile_init(ram_addr_t ram_size,
const char *boot_device,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model,
int board_id)
{
CPUState *env;
ram_addr_t ram_offset;
qemu_irq *cpu_pic;
qemu_irq pic[32];
qemu_irq sic[32];
DeviceState *dev, *sysctl;
PCIBus *pci_bus;
NICInfo *nd;
int n;
int done_smc = 0;
if (!cpu_model)
cpu_model = "arm926";
env = cpu_init(cpu_model);
if (!env) {
fprintf(stderr, "Unable to find CPU definition\n");
exit(1);
}
ram_offset = qemu_ram_alloc(NULL, "versatile.ram", ram_size);
/* ??? RAM should repeat to fill physical memory space. */
/* SDRAM at address zero. */
cpu_register_physical_memory(0, ram_size, ram_offset | IO_MEM_RAM);
sysctl = qdev_create(NULL, "realview_sysctl");
qdev_prop_set_uint32(sysctl, "sys_id", 0x41007004);
qdev_init_nofail(sysctl);
qdev_prop_set_uint32(sysctl, "proc_id", 0x02000000);
sysbus_mmio_map(sysbus_from_qdev(sysctl), 0, 0x10000000);
cpu_pic = arm_pic_init_cpu(env);
dev = sysbus_create_varargs("pl190", 0x10140000,
cpu_pic[0], cpu_pic[1], NULL);
for (n = 0; n < 32; n++) {
pic[n] = qdev_get_gpio_in(dev, n);
}
dev = sysbus_create_simple("versatilepb_sic", 0x10003000, NULL);
for (n = 0; n < 32; n++) {
sysbus_connect_irq(sysbus_from_qdev(dev), n, pic[n]);
sic[n] = qdev_get_gpio_in(dev, n);
}
sysbus_create_simple("pl050_keyboard", 0x10006000, sic[3]);
sysbus_create_simple("pl050_mouse", 0x10007000, sic[4]);
dev = sysbus_create_varargs("versatile_pci", 0x40000000,
sic[27], sic[28], sic[29], sic[30], NULL);
pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
/* The Versatile PCI bridge does not provide access to PCI IO space,
so many of the qemu PCI devices are not useable. */
for(n = 0; n < nb_nics; n++) {
nd = &nd_table[n];
if (!done_smc && (!nd->model || strcmp(nd->model, "smc91c111") == 0)) {
smc91c111_init(nd, 0x10010000, sic[25]);
done_smc = 1;
} else {
pci_nic_init_nofail(nd, "rtl8139", NULL);
}
}
if (usb_enabled) {
usb_ohci_init_pci(pci_bus, -1);
}
n = drive_get_max_bus(IF_SCSI);
while (n >= 0) {
pci_create_simple(pci_bus, -1, "lsi53c895a");
n--;
}
sysbus_create_simple("pl011", 0x101f1000, pic[12]);
sysbus_create_simple("pl011", 0x101f2000, pic[13]);
sysbus_create_simple("pl011", 0x101f3000, pic[14]);
sysbus_create_simple("pl011", 0x10009000, sic[6]);
sysbus_create_simple("pl080", 0x10130000, pic[17]);
sysbus_create_simple("sp804", 0x101e2000, pic[4]);
sysbus_create_simple("sp804", 0x101e3000, pic[5]);
/* The versatile/PB actually has a modified Color LCD controller
that includes hardware cursor support from the PL111. */
dev = sysbus_create_simple("pl110_versatile", 0x10120000, pic[16]);
/* Wire up the mux control signals from the SYS_CLCD register */
qdev_connect_gpio_out(sysctl, 0, qdev_get_gpio_in(dev, 0));
sysbus_create_varargs("pl181", 0x10005000, sic[22], sic[1], NULL);
sysbus_create_varargs("pl181", 0x1000b000, sic[23], sic[2], NULL);
/* Add PL031 Real Time Clock. */
sysbus_create_simple("pl031", 0x101e8000, pic[10]);
/* Memory map for Versatile/PB: */
/* 0x10000000 System registers. */
/* 0x10001000 PCI controller config registers. */
/* 0x10002000 Serial bus interface. */
/* 0x10003000 Secondary interrupt controller. */
/* 0x10004000 AACI (audio). */
/* 0x10005000 MMCI0. */
/* 0x10006000 KMI0 (keyboard). */
/* 0x10007000 KMI1 (mouse). */
/* 0x10008000 Character LCD Interface. */
/* 0x10009000 UART3. */
/* 0x1000a000 Smart card 1. */
/* 0x1000b000 MMCI1. */
/* 0x10010000 Ethernet. */
/* 0x10020000 USB. */
/* 0x10100000 SSMC. */
/* 0x10110000 MPMC. */
/* 0x10120000 CLCD Controller. */
/* 0x10130000 DMA Controller. */
/* 0x10140000 Vectored interrupt controller. */
/* 0x101d0000 AHB Monitor Interface. */
/* 0x101e0000 System Controller. */
/* 0x101e1000 Watchdog Interface. */
/* 0x101e2000 Timer 0/1. */
/* 0x101e3000 Timer 2/3. */
/* 0x101e4000 GPIO port 0. */
/* 0x101e5000 GPIO port 1. */
/* 0x101e6000 GPIO port 2. */
/* 0x101e7000 GPIO port 3. */
/* 0x101e8000 RTC. */
/* 0x101f0000 Smart card 0. */
/* 0x101f1000 UART0. */
/* 0x101f2000 UART1. */
/* 0x101f3000 UART2. */
/* 0x101f4000 SSPI. */
versatile_binfo.ram_size = ram_size;
versatile_binfo.kernel_filename = kernel_filename;
versatile_binfo.kernel_cmdline = kernel_cmdline;
versatile_binfo.initrd_filename = initrd_filename;
versatile_binfo.board_id = board_id;
arm_load_kernel(env, &versatile_binfo);
}
static void vpb_init(ram_addr_t ram_size,
const char *boot_device,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model)
{
versatile_init(ram_size,
boot_device,
kernel_filename, kernel_cmdline,
initrd_filename, cpu_model, 0x183);
}
static void vab_init(ram_addr_t ram_size,
const char *boot_device,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model)
{
versatile_init(ram_size,
boot_device,
kernel_filename, kernel_cmdline,
initrd_filename, cpu_model, 0x25e);
}
static QEMUMachine versatilepb_machine = {
.name = "versatilepb",
.desc = "ARM Versatile/PB (ARM926EJ-S)",
.init = vpb_init,
.use_scsi = 1,
};
static QEMUMachine versatileab_machine = {
.name = "versatileab",
.desc = "ARM Versatile/AB (ARM926EJ-S)",
.init = vab_init,
.use_scsi = 1,
};
static void versatile_machine_init(void)
{
qemu_register_machine(&versatilepb_machine);
qemu_register_machine(&versatileab_machine);
}
machine_init(versatile_machine_init);
static SysBusDeviceInfo vpb_sic_info = {
.init = vpb_sic_init,
.qdev.name = "versatilepb_sic",
.qdev.size = sizeof(vpb_sic_state),
.qdev.vmsd = &vmstate_vpb_sic,
.qdev.no_user = 1,
};
static void versatilepb_register_devices(void)
{
sysbus_register_withprop(&vpb_sic_info);
}
device_init(versatilepb_register_devices)
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