Zoltan,
Gitlab didn't like this patch. It broke all 32 bits builds due to an overflow
down there:
On 9/24/22 09:28, BALATON Zoltan wrote:
Move the check for valid memory sizes from board to sdram controller
init. This adds the missing valid memory sizes of 4 GiB, 16 and 8 MiB
to the DoC and the board now only checks for additional restrictions
imposed by its firmware then sdram init checks for valid sizes for SoC.
Signed-off-by: BALATON Zoltan <bala...@eik.bme.hu>
---
hw/ppc/ppc440.h | 4 ++--
hw/ppc/ppc440_uc.c | 15 +++++++--------
hw/ppc/sam460ex.c | 32 +++++++++++++++++---------------
3 files changed, 26 insertions(+), 25 deletions(-)
diff --git a/hw/ppc/ppc440.h b/hw/ppc/ppc440.h
index 01d76b8000..29f6f14ed7 100644
--- a/hw/ppc/ppc440.h
+++ b/hw/ppc/ppc440.h
@@ -11,13 +11,13 @@
#ifndef PPC440_H
#define PPC440_H
-#include "hw/ppc/ppc4xx.h"
+#include "hw/ppc/ppc.h"
void ppc4xx_l2sram_init(CPUPPCState *env);
void ppc4xx_cpr_init(CPUPPCState *env);
void ppc4xx_sdr_init(CPUPPCState *env);
void ppc440_sdram_init(CPUPPCState *env, int nbanks,
- Ppc4xxSdramBank *ram_banks);
+ MemoryRegion *ram);
void ppc4xx_ahb_init(CPUPPCState *env);
void ppc4xx_dma_init(CPUPPCState *env, int dcr_base);
void ppc460ex_pcie_init(CPUPPCState *env);
diff --git a/hw/ppc/ppc440_uc.c b/hw/ppc/ppc440_uc.c
index edd0781eb7..2b9d666b71 100644
--- a/hw/ppc/ppc440_uc.c
+++ b/hw/ppc/ppc440_uc.c
@@ -487,7 +487,7 @@ void ppc4xx_sdr_init(CPUPPCState *env)
typedef struct ppc440_sdram_t {
uint32_t addr;
uint32_t mcopt2;
- int nbanks;
+ int nbanks; /* Banks to use from the 4, e.g. when board has less slots */
Ppc4xxSdramBank bank[4];
} ppc440_sdram_t;
@@ -733,18 +733,17 @@ static void sdram_ddr2_reset(void *opaque)
}
void ppc440_sdram_init(CPUPPCState *env, int nbanks,
- Ppc4xxSdramBank *ram_banks)
+ MemoryRegion *ram)
{
ppc440_sdram_t *s;
- int i;
+ const ram_addr_t valid_bank_sizes[] = {
+ 4 * GiB, 2 * GiB, 1 * GiB, 512 * MiB, 256 * MiB, 128 * MiB, 64 * MiB,
^ here. ram_addr_t will be a 32 bit var in a 32 bit host, and assigning 4 * GiB
will
overflow it back to zero.
Here's the Gitlab error from the 'cross-win32-system' runner:
FAILED: libqemu-ppc64-softmmu.fa.p/hw_ppc_ppc440_uc.c.obj
2725i686-w64-mingw32-gcc -m32 -Ilibqemu-ppc64-softmmu.fa.p -I. -I.. -Itarget/ppc -I../target/ppc
-I../dtc/libfdt -Iqapi -Itrace -Iui -Iui/shader
-I/usr/i686-w64-mingw32/sys-root/mingw/include/pixman-1
-I/usr/i686-w64-mingw32/sys-root/mingw/include/glib-2.0
-I/usr/i686-w64-mingw32/sys-root/mingw/lib/glib-2.0/include -fdiagnostics-color=auto -Wall
-Winvalid-pch -Werror -std=gnu11 -O2 -g -iquote . -iquote /builds/danielhb/qemu -iquote
/builds/danielhb/qemu/include -iquote /builds/danielhb/qemu/tcg/i386 -mms-bitfields
-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-pie -no-pie -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings
-Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration
-Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self
-Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined
-Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi
-fstack-protector-strong -DNEED_CPU_H '-DCONFIG_TARGET="ppc64-softmmu-config-target.h"'
'-DCONFIG_DEVICES="ppc64-softmmu-config-devices.h"' -MD -MQ
libqemu-ppc64-softmmu.fa.p/hw_ppc_ppc440_uc.c.obj -MF
libqemu-ppc64-softmmu.fa.p/hw_ppc_ppc440_uc.c.obj.d -o
libqemu-ppc64-softmmu.fa.p/hw_ppc_ppc440_uc.c.obj -c ../hw/ppc/ppc440_uc.c
2726../hw/ppc/ppc440_uc.c: In function 'ppc4xx_sdram_ddr2_realize':
2727../hw/ppc/ppc440_uc.c:729:9: error: unsigned conversion from 'long long
int' to 'unsigned int' changes value from '4294967296' to '0' [-Werror=overflow]
2728 729 | 4 * GiB, 2 * GiB, 1 * GiB, 512 * MiB, 256 * MiB, 128 * MiB,
64 * MiB,
2729 | ^
2730cc1: all warnings being treated as errors
2731
A quick fix that I can make in-tree is to avoid the overflow by doing (4 * GiB)
- 1.
But since this might affect some logic in the model I figured I should ask you
first.
Let me know if this is OK with you. Otherwise feel free to propose another
workaround. I appreciate if you can answer quickly because I can't make a
ppc-next
PR until this is sorted out.
Thanks,
Daniel
+ 32 * MiB, 16 * MiB, 8 * MiB, 0
+ };
s = g_malloc0(sizeof(*s));
s->nbanks = nbanks;
- for (i = 0; i < nbanks; i++) {
- s->bank[i].ram = ram_banks[i].ram;
- s->bank[i].base = ram_banks[i].base;
- s->bank[i].size = ram_banks[i].size;
- }
+ ppc4xx_sdram_banks(ram, s->nbanks, s->bank, valid_bank_sizes);
qemu_register_reset(&sdram_ddr2_reset, s);
ppc_dcr_register(env, SDRAM0_CFGADDR,
s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write);
diff --git a/hw/ppc/sam460ex.c b/hw/ppc/sam460ex.c
index b318521b01..13055a8916 100644
--- a/hw/ppc/sam460ex.c
+++ b/hw/ppc/sam460ex.c
@@ -74,13 +74,6 @@
#define EBC_FREQ 115000000
#define UART_FREQ 11059200
-/* The SoC could also handle 4 GiB but firmware does not work with that. */
-/* Maybe it overflows a signed 32 bit number somewhere? */
-static const ram_addr_t ppc460ex_sdram_bank_sizes[] = {
- 2 * GiB, 1 * GiB, 512 * MiB, 256 * MiB, 128 * MiB, 64 * MiB,
- 32 * MiB, 0
-};
-
struct boot_info {
uint32_t dt_base;
uint32_t dt_size;
@@ -273,7 +266,6 @@ static void sam460ex_init(MachineState *machine)
{
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *isa = g_new(MemoryRegion, 1);
- Ppc4xxSdramBank *ram_banks = g_new0(Ppc4xxSdramBank, 1);
MemoryRegion *l2cache_ram = g_new(MemoryRegion, 1);
DeviceState *uic[4];
int i;
@@ -340,12 +332,22 @@ static void sam460ex_init(MachineState *machine)
}
/* SDRAM controller */
- /* put all RAM on first bank because board has one slot
- * and firmware only checks that */
- ppc4xx_sdram_banks(machine->ram, 1, ram_banks, ppc460ex_sdram_bank_sizes);
-
+ /* The SoC could also handle 4 GiB but firmware does not work with that. */
+ if (machine->ram_size > 2 * GiB) {
+ error_report("Memory over 2 GiB is not supported");
+ exit(1);
+ }
+ /* Firmware needs at least 64 MiB */
+ if (machine->ram_size < 64 * MiB) {
+ error_report("Memory below 64 MiB is not supported");
+ exit(1);
+ }
+ /*
+ * Put all RAM on first bank because board has one slot
+ * and firmware only checks that
+ */
+ ppc440_sdram_init(env, 1, machine->ram);
/* FIXME: does 460EX have ECC interrupts? */
- ppc440_sdram_init(env, 1, ram_banks);
/* Enable SDRAM memory regions as we may boot without firmware */
ppc4xx_sdram_ddr2_enable(env);
@@ -354,8 +356,8 @@ static void sam460ex_init(MachineState *machine)
qdev_get_gpio_in(uic[0], 2));
i2c = PPC4xx_I2C(dev)->bus;
/* SPD EEPROM on RAM module */
- spd_data = spd_data_generate(ram_banks->size < 128 * MiB ? DDR : DDR2,
- ram_banks->size);
+ spd_data = spd_data_generate(machine->ram_size < 128 * MiB ? DDR : DDR2,
+ machine->ram_size);
spd_data[20] = 4; /* SO-DIMM module */
smbus_eeprom_init_one(i2c, 0x50, spd_data);
/* RTC */
