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[RFC PATCH v2 2/2] hw/arm/integratorcp: Map a CFI parallel flash
From: |
Philippe Mathieu-Daudé |
Subject: |
[RFC PATCH v2 2/2] hw/arm/integratorcp: Map a CFI parallel flash |
Date: |
Mon, 24 Feb 2020 00:30:33 +0100 |
The Linux kernel displays errors why trying to detect the flash:
Linux version 4.16.0 (linus@genomnajs) (gcc version 7.2.1 20171011 (Linaro
GCC 7.2-2017.11)) #142 PREEMPT Wed May 9 13:24:55 CEST 2018
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00093177
CPU: VIVT data cache, VIVT instruction cache
OF: fdt: Machine model: ARM Integrator/CP
...
of-flash 24000000.flash: Integrator/CP flash protection
of-flash 24000000.flash: do_map_probe() failed for type cfi_probe
of-flash 24000000.flash: do_map_probe() failed
Since we have a CFI pflash model available, wire it.
The kernel properly detects it:
of-flash 24000000.flash: Integrator/CP flash protection
24000000.flash: Found 1 x32 devices at 0x0 in 32-bit bank. Manufacturer ID
0x000000 Chip ID 0x000000
Intel/Sharp Extended Query Table at 0x0031
Using buffer write method
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
v2: Kconfig change was not committed
RFC because I have no idea of the flash model, its ID code, and which
default CFI family (1 or 2).
---
hw/arm/integratorcp.c | 11 +++++++++++
hw/arm/Kconfig | 1 +
2 files changed, 12 insertions(+)
diff --git a/hw/arm/integratorcp.c b/hw/arm/integratorcp.c
index 59804140cd..40cedfd55a 100644
--- a/hw/arm/integratorcp.c
+++ b/hw/arm/integratorcp.c
@@ -8,6 +8,7 @@
*/
#include "qemu/osdep.h"
+#include "qemu/units.h"
#include "qapi/error.h"
#include "cpu.h"
#include "hw/sysbus.h"
@@ -24,6 +25,7 @@
#include "hw/char/pl011.h"
#include "hw/hw.h"
#include "hw/irq.h"
+#include "hw/block/flash.h"
#define TYPE_INTEGRATOR_CM "integrator_core"
#define INTEGRATOR_CM(obj) \
@@ -589,6 +591,7 @@ static void integratorcp_init(MachineState *machine)
MemoryRegion *ram_alias = g_new(MemoryRegion, 1);
qemu_irq pic[32];
DeviceState *dev, *sic, *icp;
+ DriveInfo *dinfo;
int i;
cpuobj = object_new(machine->cpu_type);
@@ -646,6 +649,14 @@ static void integratorcp_init(MachineState *machine)
qdev_get_gpio_in_named(icp, ICP_GPIO_MMC_CARDIN, 0));
sysbus_create_varargs("pl041", 0x1d000000, pic[25], NULL);
+ dinfo = drive_get(IF_PFLASH, 0, 0);
+ if (!pflash_cfi01_register(0x24000000, "pflash", 16 * MiB,
+ dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
+ 64 * KiB, 4, 0, 0, 0, 0, 0)) {
+ error_report("Error registering flash memory");
+ exit(1);
+ }
+
if (nd_table[0].used)
smc91c111_init(&nd_table[0], 0xc8000000, pic[27]);
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index 61635f52c4..7f179f960f 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -73,6 +73,7 @@ config INTEGRATOR
select PL050 # keyboard/mouse
select PL110 # pl111 LCD controller
select PL181 # display
+ select PFLASH_CFI01
select SMC91C111
config MAINSTONE
--
2.21.1