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author | T Karthik Reddy <t.karthik.reddy@xilinx.com> | 2021-08-10 15:50:18 +0300 |
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committer | Michal Simek <michal.simek@xilinx.com> | 2021-08-26 09:08:11 +0300 |
commit | a890a53ad2cdda973959947619245832203cd7f3 (patch) | |
tree | db049f78a71a604e881006e6252578038ed73be0 /drivers/soc/soc_xilinx_zynqmp.c | |
parent | 5e1a3be6674ba9945ad28291cb6d8e511db6eb92 (diff) | |
download | u-boot-a890a53ad2cdda973959947619245832203cd7f3.tar.xz |
soc: xilinx: zynqmp: Add soc_xilinx_zynqmp driver
soc_xilinx_zynqmp driver allows identification of family & revision
of zynqmp SoC. This driver is selected by CONFIG_SOC_XILINX_ZYNQMP.
Add this config to xilinx_zynqmp_virt_defconfig file.
Probe this driver using platdata U_BOOT_DEVICE structure which is
specified in mach-zynqmp/cpu.c.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Reviewed-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'drivers/soc/soc_xilinx_zynqmp.c')
-rw-r--r-- | drivers/soc/soc_xilinx_zynqmp.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/soc/soc_xilinx_zynqmp.c b/drivers/soc/soc_xilinx_zynqmp.c new file mode 100644 index 0000000000..7d33ce2163 --- /dev/null +++ b/drivers/soc/soc_xilinx_zynqmp.c @@ -0,0 +1,78 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Xilinx ZynqMP SOC driver + * + * Copyright (C) 2021 Xilinx, Inc. + */ + +#include <common.h> +#include <dm.h> +#include <asm/cache.h> +#include <soc.h> +#include <zynqmp_firmware.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/hardware.h> + +/* + * Zynqmp has 4 silicon revisions + * v0 -> 0(XCZU9EG-ES1) + * v1 -> 1(XCZU3EG-ES1, XCZU15EG-ES1) + * v2 -> 2(XCZU7EV-ES1, XCZU9EG-ES2, XCZU19EG-ES1) + * v3 -> 3(Production Level) + */ +static const char zynqmp_family[] = "ZynqMP"; + +struct soc_xilinx_zynqmp_priv { + const char *family; + char revision; +}; + +static int soc_xilinx_zynqmp_get_family(struct udevice *dev, char *buf, int size) +{ + struct soc_xilinx_zynqmp_priv *priv = dev_get_priv(dev); + + return snprintf(buf, size, "%s", priv->family); +} + +static int soc_xilinx_zynqmp_get_revision(struct udevice *dev, char *buf, int size) +{ + struct soc_xilinx_zynqmp_priv *priv = dev_get_priv(dev); + + return snprintf(buf, size, "v%d", priv->revision); +} + +static const struct soc_ops soc_xilinx_zynqmp_ops = { + .get_family = soc_xilinx_zynqmp_get_family, + .get_revision = soc_xilinx_zynqmp_get_revision, +}; + +static int soc_xilinx_zynqmp_probe(struct udevice *dev) +{ + struct soc_xilinx_zynqmp_priv *priv = dev_get_priv(dev); + u32 ret_payload[4]; + int ret; + + priv->family = zynqmp_family; + + if (IS_ENABLED(CONFIG_SPL_BUILD) || current_el() == 3 || + !IS_ENABLED(CONFIG_ZYNQMP_FIRMWARE)) + ret = zynqmp_mmio_read(ZYNQMP_PS_VERSION, &ret_payload[2]); + else + ret = xilinx_pm_request(PM_GET_CHIPID, 0, 0, 0, 0, + ret_payload); + if (ret < 0) + return ret; + + priv->revision = ret_payload[2] & ZYNQMP_PS_VER_MASK; + + return 0; +} + +U_BOOT_DRIVER(soc_xilinx_zynqmp) = { + .name = "soc_xilinx_zynqmp", + .id = UCLASS_SOC, + .ops = &soc_xilinx_zynqmp_ops, + .probe = soc_xilinx_zynqmp_probe, + .priv_auto = sizeof(struct soc_xilinx_zynqmp_priv), + .flags = DM_FLAG_PRE_RELOC, +}; |