On Fri, Sep 16, 2022 at 5:26 PM Bin Meng wrote: > On Thu, Sep 15, 2022 at 11:30 PM Bernhard Beschow > wrote: > > > > Adds missing functionality to emulated e500 SOCs which increases the > > chance of given "real" firmware images to access SD cards. > > By "firmware" do you mean U-Boot? > No, I mean a proprietary flash blob including partitions for the kernel, root fs, U-Boot, etc. > > > Signed-off-by: Bernhard Beschow > > --- > > docs/system/ppc/ppce500.rst | 13 +++++++++++++ > > hw/ppc/Kconfig | 1 + > > hw/ppc/e500.c | 32 ++++++++++++++++++++++++++++++++ > > 3 files changed, 46 insertions(+) > > > > diff --git a/docs/system/ppc/ppce500.rst b/docs/system/ppc/ppce500.rst > > index c3f55c6f3d..50b199c8f3 100644 > > --- a/docs/system/ppc/ppce500.rst > > +++ b/docs/system/ppc/ppce500.rst > > @@ -19,6 +19,7 @@ The ``ppce500`` machine supports the following devices: > > * Power-off functionality via one GPIO pin > > * 1 Freescale MPC8xxx PCI host controller > > * VirtIO devices via PCI bus > > +* 1 Freescale Enhanced Secure Digital Host controller (eSDHC) > > * 1 Freescale Enhanced Triple Speed Ethernet controller (eTSEC) > > > > Hardware configuration information > > @@ -131,6 +132,18 @@ be used as follows: > > -drive if=pflash,file=/path/to/rootfs.ext2,format=raw \ > > -append "rootwait root=/dev/mtdblock0" > > > > +Alternatively, the root file system can also reside on an emulated SD > card > > +whose size must again be a power of two: > > + > > +.. code-block:: bash > > + > > + $ qemu-system-ppc64 -M ppce500 -cpu e500mc -smp 4 -m 2G \ > > qemu-system-ppc{64|32} > Will fix. > > + -display none -serial stdio \ > > + -kernel vmlinux \ > > + -device sd-card,drive=mydrive \ > > + -drive id=mydrive,if=none,file=/path/to/rootfs.ext2,format=raw \ > > + -append "rootwait root=/dev/mmcblk0" > > + > > Running U-Boot > > -------------- > > > > diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig > > index 769a1ead1c..6e31f568ba 100644 > > --- a/hw/ppc/Kconfig > > +++ b/hw/ppc/Kconfig > > @@ -129,6 +129,7 @@ config E500 > > select PFLASH_CFI01 > > select PLATFORM_BUS > > select PPCE500_PCI > > + select SDHCI > > select SERIAL > > select MPC_I2C > > select FDT_PPC > > diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c > > index 7843a4e04b..87a03fd4a9 100644 > > --- a/hw/ppc/e500.c > > +++ b/hw/ppc/e500.c > > @@ -48,6 +48,7 @@ > > #include "hw/net/fsl_etsec/etsec.h" > > #include "hw/i2c/i2c.h" > > #include "hw/irq.h" > > +#include "hw/sd/sdhci.h" > > > > #define EPAPR_MAGIC (0x45504150) > > #define DTC_LOAD_PAD 0x1800000 > > @@ -66,11 +67,14 @@ > > #define MPC8544_SERIAL1_REGS_OFFSET 0x4600ULL > > #define MPC8544_PCI_REGS_OFFSET 0x8000ULL > > #define MPC8544_PCI_REGS_SIZE 0x1000ULL > > +#define MPC85XX_ESDHC_REGS_OFFSET 0x2e000ULL > > +#define MPC85XX_ESDHC_REGS_SIZE 0x1000ULL > > #define MPC8544_UTIL_OFFSET 0xe0000ULL > > #define MPC8XXX_GPIO_OFFSET 0x000FF000ULL > > #define MPC8544_I2C_REGS_OFFSET 0x3000ULL > > #define MPC8XXX_GPIO_IRQ 47 > > #define MPC8544_I2C_IRQ 43 > > +#define MPC85XX_ESDHC_IRQ 72 > > #define RTC_REGS_OFFSET 0x68 > > > > #define PLATFORM_CLK_FREQ_HZ (400 * 1000 * 1000) > > @@ -203,6 +207,25 @@ static void dt_i2c_create(void *fdt, const char > *soc, const char *mpic, > > g_free(i2c); > > } > > > > +static void dt_sdhc_create(void *fdt, const char *parent, const char > *mpic) > > +{ > > + hwaddr mmio = MPC85XX_ESDHC_REGS_OFFSET; > > + hwaddr size = MPC85XX_ESDHC_REGS_SIZE; > > + int irq = MPC85XX_ESDHC_IRQ; > > + char *name; > > + > > + name = g_strdup_printf("%s/sdhc@%" PRIx64, parent, mmio); > > + qemu_fdt_add_subnode(fdt, name); > > + /* qemu_fdt_setprop_cells(fdt, name, "voltage-ranges", 3300, 3300); > */ > > Drop it if it is useless > > > + qemu_fdt_setprop_cells(fdt, name, "clock-frequency", 167000000); > > Is this an arbitrary frequency? > I'll drop both since the eSDHC works also without the frequency line. > + qemu_fdt_setprop(fdt, name, "sdhci,auto-cmd12", NULL, 0); > > + qemu_fdt_setprop_phandle(fdt, name, "interrupt-parent", mpic); > > + qemu_fdt_setprop_cells(fdt, name, "bus-width", 4); > > + qemu_fdt_setprop_cells(fdt, name, "interrupts", irq, 0x2); > > + qemu_fdt_setprop_cells(fdt, name, "reg", mmio, size); > > + qemu_fdt_setprop_string(fdt, name, "compatible", "fsl,esdhc"); > > + g_free(name); > > +} > > > > typedef struct PlatformDevtreeData { > > void *fdt; > > @@ -556,6 +579,8 @@ static int > ppce500_load_device_tree(PPCE500MachineState *pms, > > > > dt_rtc_create(fdt, "i2c", "rtc"); > > > > + /* sdhc */ > > + dt_sdhc_create(fdt, soc, mpic); > > > > gutil = g_strdup_printf("%s/global-utilities@%llx", soc, > > MPC8544_UTIL_OFFSET); > > @@ -996,6 +1021,13 @@ void ppce500_init(MachineState *machine) > > i2c_slave_create_simple(i2c, "ds1338", RTC_REGS_OFFSET); > > > > > > nits: use one line for the separation > The extra empty line was there before and it looks like it came from moving I2C around - notice the broken indentation of it's comment. I'll fix that in this patch. Best regards, Bernhard > + /* eSDHC */ > > + dev = qdev_new(TYPE_FSL_ESDHC); > > + s = SYS_BUS_DEVICE(dev); > > + sysbus_realize_and_unref(s, &error_fatal); > > + sysbus_mmio_map(s, 0, pmc->ccsrbar_base + > MPC85XX_ESDHC_REGS_OFFSET); > > + sysbus_connect_irq(s, 0, qdev_get_gpio_in(mpicdev, > MPC85XX_ESDHC_IRQ)); > > + > > /* General Utility device */ > > dev = qdev_new("mpc8544-guts"); > > s = SYS_BUS_DEVICE(dev); > > -- > > Regards, > Bin >