[edk2-devel] [PATCH 2/3] Platform/RaspberryPi/Acpitables: Add eMMC2 device and tweak Arasan
Ard Biesheuvel
ard.biesheuvel at arm.com
Fri Jan 8 08:28:35 UTC 2021
On 1/8/21 7:16 AM, Jeremy Linton wrote:
> The primarly problem with the rpi Arasan controller working
> with a default SDHCI driver is the lack of a meaningful
> capabilities register. As such if we add a _DSD entry
> to provide that information, we can then bind it to
> the linux sdhci_iproc driver which already
> hardcodes the remaining controller bugs.
>
> Further we have gotten BRCME88C approved as the HID
> for the newer eMMC2 controller. So lets define an
> ACPI object to describe it.
>
> Of course both devices are sharing an interrupt so
> we should also indicate that in the table as well.
>
> Signed-off-by: Jeremy Linton <jeremy.linton at arm.com>
> ---
> Platform/RaspberryPi/AcpiTables/Dsdt.asl | 2 +
> Platform/RaspberryPi/AcpiTables/Sdhc.asl | 86 +++++++++++++++++++++++++++++++-
> 2 files changed, 86 insertions(+), 2 deletions(-)
>
> diff --git a/Platform/RaspberryPi/AcpiTables/Dsdt.asl b/Platform/RaspberryPi/AcpiTables/Dsdt.asl
> index d116f965e1..cca08c0539 100644
> --- a/Platform/RaspberryPi/AcpiTables/Dsdt.asl
> +++ b/Platform/RaspberryPi/AcpiTables/Dsdt.asl
> @@ -150,6 +150,7 @@ DefinitionBlock ("Dsdt.aml", "DSDT", 5, "RPIFDN", "RPI", 2)
> QWORDMEMORYBUF(23)
> QWORDMEMORYBUF(24)
> QWORDMEMORYBUF(25)
> + QWORDMEMORYBUF(26)
> })
>
> // USB
> @@ -196,6 +197,7 @@ DefinitionBlock ("Dsdt.aml", "DSDT", 5, "RPIFDN", "RPI", 2)
> // SDC
> QWORDMEMORYSET(24, MMCHS1_OFFSET, MMCHS1_LENGTH)
> QWORDMEMORYSET(25, SDHOST_OFFSET, SDHOST_LENGTH)
> + QWORDMEMORYSET(26, MMCHS2_OFFSET, MMCHS2_LENGTH)
>
> Return (RBUF)
> }
> diff --git a/Platform/RaspberryPi/AcpiTables/Sdhc.asl b/Platform/RaspberryPi/AcpiTables/Sdhc.asl
> index 0ab1ba27f2..a7ac831066 100644
> --- a/Platform/RaspberryPi/AcpiTables/Sdhc.asl
> +++ b/Platform/RaspberryPi/AcpiTables/Sdhc.asl
> @@ -19,7 +19,7 @@
> // Note: UEFI can use either SDHost or Arasan. We expose both to the OS.
> //
>
> -// ArasanSD 3.0 SD Host Controller.
> +// ArasanSD 3.0 SD Host Controller. (brcm,bcm2835-sdhci)
> Device (SDC1)
> {
> Name (_HID, "BCM2847")
> @@ -37,7 +37,7 @@ Device (SDC1)
> Name (RBUF, ResourceTemplate ()
> {
> MEMORY32FIXED (ReadWrite, 0, MMCHS1_LENGTH, RMEM)
> - Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive) { BCM2836_MMCHS1_INTERRUPT }
> + Interrupt (ResourceConsumer, Level, ActiveHigh, Shared) { BCM2836_MMCHS1_INTERRUPT }
> })
> Method (_CRS, 0x0, Serialized)
> {
> @@ -45,6 +45,86 @@ Device (SDC1)
> Return (^RBUF)
> }
>
> + // The standard CAPs registers on this controller
> + // appear to be 0, lets set some minimal defaults
> + // Since this cap doesn't indicate DMA capability
> + // we don't need a _DMA()
> + Name (_DSD, Package () {
> + ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
> + Package () {
> + Package () { "sdhci-caps", 0x0100fa81 },
> + }
> + })
> +
> +
> + //
> + // A child device that represents the
> + // sd card, which is marked as non-removable.
> + //
> + Device (SDMM)
> + {
> + Method (_ADR)
> + {
> + Return (0)
> + }
> + Method (_RMV) // Is removable
> + {
> + Return (0) // 0 - fixed
> + }
> + }
> +}
> +
> +#if (RPI_MODEL == 4)
> +// emmc2 Host Controller. (brcm,bcm2711-emmc2)
> +Device (SDC3)
> +{
> + Name (_HID, "BRCME88C")
> + Name (_UID, 0x1)
> + Name (_CCA, 0x0)
> + Name (_S1D, 0x1)
> + Name (_S2D, 0x1)
> + Name (_S3D, 0x1)
> + Name (_S4D, 0x1)
> + Method (_STA)
> + {
> + Return(0xf)
> + }
> + Name (RBUF, ResourceTemplate ()
> + {
> + MEMORY32FIXED (ReadWrite, 0, MMCHS2_LENGTH, RMEM)
> + Interrupt (ResourceConsumer, Level, ActiveHigh, Shared) { BCM2836_MMCHS1_INTERRUPT }
> + })
> + Method (_CRS, 0x0, Serialized)
> + {
> + MEMORY32SETBASE (RBUF, RMEM, RBAS, MMCHS2_OFFSET)
> + Return (^RBUF)
> + }
> +
> + // forceably limit to 1G
> + Name (_DMA, ResourceTemplate() {
> + QWordMemory (ResourceConsumer,
> + ,
> + MinFixed,
> + MaxFixed,
> + NonCacheable,
> + ReadWrite,
> + 0x0,
> + 0x0, // MIN
> + 0x3fffffff, // MAX
> + 0x0, // TRA
> + 0x40000000, // LEN
> + ,
> + ,
> + )
> + })
> +
Shouldn't the _DMA method be on a container object instead of on the
device object itself?
> + Name (_DSD, Package () {
> + ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
> + Package () {
> + Package () { "sdhci-caps-mask", 0x0000000000080000 },
> + }
> + })
> +
> //
> // A child device that represents the
> // sd card, which is marked as non-removable.
> @@ -62,6 +142,7 @@ Device (SDC1)
> }
> }
>
> +#else // !RPI4
>
> // Broadcom SDHost 2.0 SD Host Controller
> Device (SDC2)
> @@ -105,3 +186,4 @@ Device (SDC2)
> }
> }
> }
> +#endif // !RPI4
>
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