zynqmp: Add support for emulation platform - Veloce

Add support for Veloce - zynqmp emulation platform.
Platform doesn't support SDHCI.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/cpu/armv8/zynqmp/clk.c

@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <asm/arch/clk.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/sys_proto.h>
 
@@ -16,6 +17,8 @@ unsigned long get_uart_clk(int dev_id)
 	u32 ver = zynqmp_get_silicon_version();
 
 	switch (ver) {
+	case ZYNQMP_CSU_VERSION_VELOCE:
+		return 48000;
 	case ZYNQMP_CSU_VERSION_EP108:
 		return 25000000;
 	}

arch/arm/cpu/armv8/zynqmp/cpu.c

@@ -20,6 +20,8 @@ unsigned int zynqmp_get_silicon_version(void)
 	gd->cpu_clk = get_tbclk();
 
 	switch (gd->cpu_clk) {
+	case 0 ... 1000000:
+		return ZYNQMP_CSU_VERSION_VELOCE;
 	case 50000000:
 		return ZYNQMP_CSU_VERSION_QEMU;
 	}

arch/arm/include/asm/arch-zynqmp/hardware.h

@@ -84,6 +84,7 @@ struct apu_regs {
 /* Board version value */
 #define ZYNQMP_CSU_VERSION_SILICON	0x0
 #define ZYNQMP_CSU_VERSION_EP108	0x1
+#define ZYNQMP_CSU_VERSION_VELOCE	0x2
 #define ZYNQMP_CSU_VERSION_QEMU		0x3
 
 #endif /* _ASM_ARCH_HARDWARE_H */

board/xilinx/zynqmp/zynqmp.c

@@ -56,14 +56,18 @@ int board_mmc_init(bd_t *bd)
 {
 	int ret = 0;
 
+	u32 ver = zynqmp_get_silicon_version();
+
+	if (ver != ZYNQMP_CSU_VERSION_VELOCE) {
 #if defined(CONFIG_ZYNQ_SDHCI)
 # if defined(CONFIG_ZYNQ_SDHCI0)
-	ret = zynq_sdhci_init(ZYNQ_SDHCI_BASEADDR0);
+		ret = zynq_sdhci_init(ZYNQ_SDHCI_BASEADDR0);
 # endif
 # if defined(CONFIG_ZYNQ_SDHCI1)
-	ret |= zynq_sdhci_init(ZYNQ_SDHCI_BASEADDR1);
+		ret |= zynq_sdhci_init(ZYNQ_SDHCI_BASEADDR1);
 # endif
 #endif
+	}
 
 	return ret;
 }