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Diffstat (limited to 'hw')
-rw-r--r--hw/arm-misc.h1
-rw-r--r--hw/arm11mpcore.c20
-rw-r--r--hw/arm_boot.c102
-rw-r--r--hw/arm_gic.c50
4 files changed, 138 insertions, 35 deletions
diff --git a/hw/arm-misc.h b/hw/arm-misc.h
index 306013aeeb..734bd82428 100644
--- a/hw/arm-misc.h
+++ b/hw/arm-misc.h
@@ -29,6 +29,7 @@ struct arm_boot_info {
const char *kernel_filename;
const char *kernel_cmdline;
const char *initrd_filename;
+ const char *dtb_filename;
target_phys_addr_t loader_start;
/* multicore boards that use the default secondary core boot functions
* need to put the address of the secondary boot code, the boot reg,
diff --git a/hw/arm11mpcore.c b/hw/arm11mpcore.c
index 102348bb70..c67b70f3b9 100644
--- a/hw/arm11mpcore.c
+++ b/hw/arm11mpcore.c
@@ -202,16 +202,7 @@ static int realview_mpcore_init(SysBusDevice *dev)
}
static Property mpcore_rirq_properties[] = {
- DEFINE_PROP_UINT32("num-cpu", mpcore_priv_state, num_cpu, 1),
- /* The ARM11 MPCORE TRM says the on-chip controller may have
- * anything from 0 to 224 external interrupt IRQ lines (with another
- * 32 internal). We default to 32+32, which is the number provided by
- * the ARM11 MPCore test chip in the Realview Versatile Express
- * coretile. Other boards may differ and should set this property
- * appropriately. Some Linux kernels may not boot if the hardware
- * has more IRQ lines than the kernel expects.
- */
- DEFINE_PROP_UINT32("num-irq", mpcore_priv_state, num_irq, 64),
+ DEFINE_PROP_UINT32("num-cpu", mpcore_rirq_state, num_cpu, 1),
DEFINE_PROP_END_OF_LIST(),
};
@@ -233,6 +224,15 @@ static TypeInfo mpcore_rirq_info = {
static Property mpcore_priv_properties[] = {
DEFINE_PROP_UINT32("num-cpu", mpcore_priv_state, num_cpu, 1),
+ /* The ARM11 MPCORE TRM says the on-chip controller may have
+ * anything from 0 to 224 external interrupt IRQ lines (with another
+ * 32 internal). We default to 32+32, which is the number provided by
+ * the ARM11 MPCore test chip in the Realview Versatile Express
+ * coretile. Other boards may differ and should set this property
+ * appropriately. Some Linux kernels may not boot if the hardware
+ * has more IRQ lines than the kernel expects.
+ */
+ DEFINE_PROP_UINT32("num-irq", mpcore_priv_state, num_irq, 64),
DEFINE_PROP_END_OF_LIST(),
};
diff --git a/hw/arm_boot.c b/hw/arm_boot.c
index 2ef25ca9dd..fc669100c5 100644
--- a/hw/arm_boot.c
+++ b/hw/arm_boot.c
@@ -7,11 +7,14 @@
* This code is licensed under the GPL.
*/
+#include "config.h"
#include "hw.h"
#include "arm-misc.h"
#include "sysemu.h"
+#include "boards.h"
#include "loader.h"
#include "elf.h"
+#include "device_tree.h"
#define KERNEL_ARGS_ADDR 0x100
#define KERNEL_LOAD_ADDR 0x00010000
@@ -208,6 +211,67 @@ static void set_kernel_args_old(const struct arm_boot_info *info)
}
}
+static int load_dtb(target_phys_addr_t addr, const struct arm_boot_info *binfo)
+{
+#ifdef CONFIG_FDT
+ uint32_t mem_reg_property[] = { cpu_to_be32(binfo->loader_start),
+ cpu_to_be32(binfo->ram_size) };
+ void *fdt = NULL;
+ char *filename;
+ int size, rc;
+
+ filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, binfo->dtb_filename);
+ if (!filename) {
+ fprintf(stderr, "Couldn't open dtb file %s\n", binfo->dtb_filename);
+ return -1;
+ }
+
+ fdt = load_device_tree(filename, &size);
+ if (!fdt) {
+ fprintf(stderr, "Couldn't open dtb file %s\n", filename);
+ g_free(filename);
+ return -1;
+ }
+ g_free(filename);
+
+ rc = qemu_devtree_setprop(fdt, "/memory", "reg", mem_reg_property,
+ sizeof(mem_reg_property));
+ if (rc < 0) {
+ fprintf(stderr, "couldn't set /memory/reg\n");
+ }
+
+ rc = qemu_devtree_setprop_string(fdt, "/chosen", "bootargs",
+ binfo->kernel_cmdline);
+ if (rc < 0) {
+ fprintf(stderr, "couldn't set /chosen/bootargs\n");
+ }
+
+ if (binfo->initrd_size) {
+ rc = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-start",
+ binfo->loader_start + INITRD_LOAD_ADDR);
+ if (rc < 0) {
+ fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
+ }
+
+ rc = qemu_devtree_setprop_cell(fdt, "/chosen", "linux,initrd-end",
+ binfo->loader_start + INITRD_LOAD_ADDR +
+ binfo->initrd_size);
+ if (rc < 0) {
+ fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
+ }
+ }
+
+ cpu_physical_memory_write(addr, fdt, size);
+
+ return 0;
+
+#else
+ fprintf(stderr, "Device tree requested, "
+ "but qemu was compiled without fdt support\n");
+ return -1;
+#endif
+}
+
static void do_cpu_reset(void *opaque)
{
CPUState *env = opaque;
@@ -222,10 +286,12 @@ static void do_cpu_reset(void *opaque)
} else {
if (env == first_cpu) {
env->regs[15] = info->loader_start;
- if (old_param) {
- set_kernel_args_old(info);
- } else {
- set_kernel_args(info);
+ if (!info->dtb_filename) {
+ if (old_param) {
+ set_kernel_args_old(info);
+ } else {
+ set_kernel_args(info);
+ }
}
} else {
info->secondary_cpu_reset_hook(env, info);
@@ -243,6 +309,7 @@ void arm_load_kernel(CPUState *env, struct arm_boot_info *info)
uint64_t elf_entry;
target_phys_addr_t entry;
int big_endian;
+ QemuOpts *machine_opts;
/* Load the kernel. */
if (!info->kernel_filename) {
@@ -250,6 +317,13 @@ void arm_load_kernel(CPUState *env, struct arm_boot_info *info)
exit(1);
}
+ machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+ if (machine_opts) {
+ info->dtb_filename = qemu_opt_get(machine_opts, "dtb");
+ } else {
+ info->dtb_filename = NULL;
+ }
+
if (!info->secondary_cpu_reset_hook) {
info->secondary_cpu_reset_hook = default_reset_secondary;
}
@@ -300,8 +374,25 @@ void arm_load_kernel(CPUState *env, struct arm_boot_info *info)
} else {
initrd_size = 0;
}
+ info->initrd_size = initrd_size;
+
bootloader[4] = info->board_id;
- bootloader[5] = info->loader_start + KERNEL_ARGS_ADDR;
+
+ /* for device tree boot, we pass the DTB directly in r2. Otherwise
+ * we point to the kernel args.
+ */
+ if (info->dtb_filename) {
+ /* Place the DTB after the initrd in memory */
+ target_phys_addr_t dtb_start = TARGET_PAGE_ALIGN(info->loader_start
+ + INITRD_LOAD_ADDR
+ + initrd_size);
+ if (load_dtb(dtb_start, info)) {
+ exit(1);
+ }
+ bootloader[5] = dtb_start;
+ } else {
+ bootloader[5] = info->loader_start + KERNEL_ARGS_ADDR;
+ }
bootloader[6] = entry;
for (n = 0; n < sizeof(bootloader) / 4; n++) {
bootloader[n] = tswap32(bootloader[n]);
@@ -311,7 +402,6 @@ void arm_load_kernel(CPUState *env, struct arm_boot_info *info)
if (info->nb_cpus > 1) {
info->write_secondary_boot(env, info);
}
- info->initrd_size = initrd_size;
}
info->is_linux = is_linux;
diff --git a/hw/arm_gic.c b/hw/arm_gic.c
index cf582a5a14..d8a7a190e8 100644
--- a/hw/arm_gic.c
+++ b/hw/arm_gic.c
@@ -13,6 +13,8 @@
/* Maximum number of possible interrupts, determined by the GIC architecture */
#define GIC_MAXIRQ 1020
+/* First 32 are private to each CPU (SGIs and PPIs). */
+#define GIC_INTERNAL 32
//#define DEBUG_GIC
#ifdef DEBUG_GIC
@@ -73,8 +75,9 @@ typedef struct gic_irq_state
#define GIC_SET_TRIGGER(irq) s->irq_state[irq].trigger = 1
#define GIC_CLEAR_TRIGGER(irq) s->irq_state[irq].trigger = 0
#define GIC_TEST_TRIGGER(irq) s->irq_state[irq].trigger
-#define GIC_GET_PRIORITY(irq, cpu) \
- (((irq) < 32) ? s->priority1[irq][cpu] : s->priority2[(irq) - 32])
+#define GIC_GET_PRIORITY(irq, cpu) (((irq) < GIC_INTERNAL) ? \
+ s->priority1[irq][cpu] : \
+ s->priority2[(irq) - GIC_INTERNAL])
#ifdef NVIC
#define GIC_TARGET(irq) 1
#else
@@ -92,8 +95,8 @@ typedef struct gic_state
#ifndef NVIC
int irq_target[GIC_MAXIRQ];
#endif
- int priority1[32][NCPU];
- int priority2[GIC_MAXIRQ - 32];
+ int priority1[GIC_INTERNAL][NCPU];
+ int priority2[GIC_MAXIRQ - GIC_INTERNAL];
int last_active[GIC_MAXIRQ][NCPU];
int priority_mask[NCPU];
@@ -174,7 +177,7 @@ static void gic_set_irq(void *opaque, int irq, int level)
{
gic_state *s = (gic_state *)opaque;
/* The first external input line is internal interrupt 32. */
- irq += 32;
+ irq += GIC_INTERNAL;
if (level == GIC_TEST_LEVEL(irq, ALL_CPU_MASK))
return;
@@ -316,7 +319,7 @@ static uint32_t gic_dist_readb(void *opaque, target_phys_addr_t offset)
if (irq >= s->num_irq)
goto bad_reg;
res = 0;
- mask = (irq < 32) ? cm : ALL_CPU_MASK;
+ mask = (irq < GIC_INTERNAL) ? cm : ALL_CPU_MASK;
for (i = 0; i < 8; i++) {
if (GIC_TEST_PENDING(irq + i, mask)) {
res |= (1 << i);
@@ -328,7 +331,7 @@ static uint32_t gic_dist_readb(void *opaque, target_phys_addr_t offset)
if (irq >= s->num_irq)
goto bad_reg;
res = 0;
- mask = (irq < 32) ? cm : ALL_CPU_MASK;
+ mask = (irq < GIC_INTERNAL) ? cm : ALL_CPU_MASK;
for (i = 0; i < 8; i++) {
if (GIC_TEST_ACTIVE(irq + i, mask)) {
res |= (1 << i);
@@ -435,8 +438,8 @@ static void gic_dist_writeb(void *opaque, target_phys_addr_t offset,
value = 0xff;
for (i = 0; i < 8; i++) {
if (value & (1 << i)) {
- int mask = (irq < 32) ? (1 << cpu) : GIC_TARGET(irq);
- int cm = (irq < 32) ? (1 << cpu) : ALL_CPU_MASK;
+ int mask = (irq < GIC_INTERNAL) ? (1 << cpu) : GIC_TARGET(irq);
+ int cm = (irq < GIC_INTERNAL) ? (1 << cpu) : ALL_CPU_MASK;
if (!GIC_TEST_ENABLED(irq + i, cm)) {
DPRINTF("Enabled IRQ %d\n", irq + i);
@@ -460,7 +463,7 @@ static void gic_dist_writeb(void *opaque, target_phys_addr_t offset,
value = 0;
for (i = 0; i < 8; i++) {
if (value & (1 << i)) {
- int cm = (irq < 32) ? (1 << cpu) : ALL_CPU_MASK;
+ int cm = (irq < GIC_INTERNAL) ? (1 << cpu) : ALL_CPU_MASK;
if (GIC_TEST_ENABLED(irq + i, cm)) {
DPRINTF("Disabled IRQ %d\n", irq + i);
@@ -502,10 +505,10 @@ static void gic_dist_writeb(void *opaque, target_phys_addr_t offset,
irq = (offset - 0x400) + GIC_BASE_IRQ;
if (irq >= s->num_irq)
goto bad_reg;
- if (irq < 32) {
+ if (irq < GIC_INTERNAL) {
s->priority1[irq][cpu] = value;
} else {
- s->priority2[irq - 32] = value;
+ s->priority2[irq - GIC_INTERNAL] = value;
}
#ifndef NVIC
} else if (offset < 0xc00) {
@@ -515,7 +518,7 @@ static void gic_dist_writeb(void *opaque, target_phys_addr_t offset,
goto bad_reg;
if (irq < 29)
value = 0;
- else if (irq < 32)
+ else if (irq < GIC_INTERNAL)
value = ALL_CPU_MASK;
s->irq_target[irq] = value & ALL_CPU_MASK;
} else if (offset < 0xf00) {
@@ -523,7 +526,7 @@ static void gic_dist_writeb(void *opaque, target_phys_addr_t offset,
irq = (offset - 0xc00) * 4 + GIC_BASE_IRQ;
if (irq >= s->num_irq)
goto bad_reg;
- if (irq < 32)
+ if (irq < GIC_INTERNAL)
value |= 0xaa;
for (i = 0; i < 4; i++) {
if (value & (1 << (i * 2))) {
@@ -736,7 +739,7 @@ static void gic_save(QEMUFile *f, void *opaque)
qemu_put_be32(f, s->enabled);
for (i = 0; i < NUM_CPU(s); i++) {
qemu_put_be32(f, s->cpu_enabled[i]);
- for (j = 0; j < 32; j++)
+ for (j = 0; j < GIC_INTERNAL; j++)
qemu_put_be32(f, s->priority1[j][i]);
for (j = 0; j < s->num_irq; j++)
qemu_put_be32(f, s->last_active[j][i]);
@@ -745,7 +748,7 @@ static void gic_save(QEMUFile *f, void *opaque)
qemu_put_be32(f, s->running_priority[i]);
qemu_put_be32(f, s->current_pending[i]);
}
- for (i = 0; i < s->num_irq - 32; i++) {
+ for (i = 0; i < s->num_irq - GIC_INTERNAL; i++) {
qemu_put_be32(f, s->priority2[i]);
}
for (i = 0; i < s->num_irq; i++) {
@@ -773,7 +776,7 @@ static int gic_load(QEMUFile *f, void *opaque, int version_id)
s->enabled = qemu_get_be32(f);
for (i = 0; i < NUM_CPU(s); i++) {
s->cpu_enabled[i] = qemu_get_be32(f);
- for (j = 0; j < 32; j++)
+ for (j = 0; j < GIC_INTERNAL; j++)
s->priority1[j][i] = qemu_get_be32(f);
for (j = 0; j < s->num_irq; j++)
s->last_active[j][i] = qemu_get_be32(f);
@@ -782,7 +785,7 @@ static int gic_load(QEMUFile *f, void *opaque, int version_id)
s->running_priority[i] = qemu_get_be32(f);
s->current_pending[i] = qemu_get_be32(f);
}
- for (i = 0; i < s->num_irq - 32; i++) {
+ for (i = 0; i < s->num_irq - GIC_INTERNAL; i++) {
s->priority2[i] = qemu_get_be32(f);
}
for (i = 0; i < s->num_irq; i++) {
@@ -816,7 +819,16 @@ static void gic_init(gic_state *s, int num_irq)
hw_error("requested %u interrupt lines exceeds GIC maximum %d\n",
num_irq, GIC_MAXIRQ);
}
- qdev_init_gpio_in(&s->busdev.qdev, gic_set_irq, s->num_irq - 32);
+ /* ITLinesNumber is represented as (N / 32) - 1 (see
+ * gic_dist_readb) so this is an implementation imposed
+ * restriction, not an architectural one:
+ */
+ if (s->num_irq < 32 || (s->num_irq % 32)) {
+ hw_error("%d interrupt lines unsupported: not divisible by 32\n",
+ num_irq);
+ }
+
+ qdev_init_gpio_in(&s->busdev.qdev, gic_set_irq, s->num_irq - GIC_INTERNAL);
for (i = 0; i < NUM_CPU(s); i++) {
sysbus_init_irq(&s->busdev, &s->parent_irq[i]);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 23:39:26 +0000