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ast2400: create SPI flash slaves 

A set of SPI flash slaves is attached under the flash controllers of
the palmetto platform. "n25q256a" flash modules are used for the BMC
and "mx25l25635e" for the host. These types are common in the
OpenPower ecosystem.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 1467138270-32481-9-git-send-email-clg@kaod.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Cédric Le Goater 2016-07-04 13:06:38 +01:00 committed by Peter Maydell
parent 924ed16386
commit e1ad9bc405
1 changed files with 31 additions and 0 deletions
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31
hw/arm/palmetto-bmc.c
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@ -18,6 +18,8 @@
#include "hw/arm/ast2400.h"
#include "hw/boards.h"
#include "qemu/log.h"
#include "sysemu/block-backend.h"
#include "sysemu/blockdev.h"
static struct arm_boot_info palmetto_bmc_binfo = {
.loader_start = AST2400_SDRAM_BASE,
@ -30,6 +32,32 @@ typedef struct PalmettoBMCState {
MemoryRegion ram;
} PalmettoBMCState;
static void palmetto_bmc_init_flashes(AspeedSMCState *s, const char *flashtype,
Error **errp)
{
int i ;
for (i = 0; i < s->num_cs; ++i) {
AspeedSMCFlash *fl = &s->flashes[i];
DriveInfo *dinfo = drive_get_next(IF_MTD);
qemu_irq cs_line;
/*
* FIXME: check that we are not using a flash module exceeding
* the controller segment size
*/
fl->flash = ssi_create_slave_no_init(s->spi, flashtype);
if (dinfo) {
qdev_prop_set_drive(fl->flash, "drive", blk_by_legacy_dinfo(dinfo),
errp);
}
qdev_init_nofail(fl->flash);
cs_line = qdev_get_gpio_in_named(fl->flash, SSI_GPIO_CS, 0);
sysbus_connect_irq(SYS_BUS_DEVICE(s), i + 1, cs_line);
}
}
static void palmetto_bmc_init(MachineState *machine)
{
PalmettoBMCState *bmc;
@ -49,6 +77,9 @@ static void palmetto_bmc_init(MachineState *machine)
object_property_set_bool(OBJECT(&bmc->soc), true, "realized",
&error_abort);
palmetto_bmc_init_flashes(&bmc->soc.smc, "n25q256a", &error_abort);
palmetto_bmc_init_flashes(&bmc->soc.spi, "mx25l25635e", &error_abort);
palmetto_bmc_binfo.kernel_filename = machine->kernel_filename;
palmetto_bmc_binfo.initrd_filename = machine->initrd_filename;
palmetto_bmc_binfo.kernel_cmdline = machine->kernel_cmdline;