arm: socfpga: fpga: Add SoCFPGA FPGA programming interface

Add code necessary to program the FPGA part of SoCFPGA from U-Boot
with an RBF blob. This patch also integrates the code into the
FPGA driver framework in U-Boot so it can be used via the 'fpga'
command.

Signed-off-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@altera.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Tom Rini <trini@ti.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Pavel Machek <pavel@denx.de>

V2: Move the not-CPU specific stuff into drivers/fpga/ and base
    this on the cleaned up altera FPGA support.

1 files changed, 36 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/socfpga/misc.c b/arch/arm/cpu/armv7/socfpga/misc.c
index f41c329a43..b07d97ee05 100644
--- a/arch/arm/cpu/armv7/socfpga/misc.c
+++ b/arch/arm/cpu/armv7/socfpga/misc.c
@@ -6,6 +6,7 @@
 
 #include <common.h>
 #include <asm/io.h>
+#include <altera.h>
 #include <miiphy.h>
 #include <netdev.h>
 #include <asm/arch/reset_manager.h>
@@ -93,6 +94,39 @@ int overwrite_console(void)
 }
 #endif
 
+#ifdef CONFIG_FPGA
+/*
+ * FPGA programming support for SoC FPGA Cyclone V
+ */
+static Altera_desc altera_fpga[] = {
+	{
+		/* Family */
+		Altera_SoCFPGA,
+		/* Interface type */
+		fast_passive_parallel,
+		/* No limitation as additional data will be ignored */
+		-1,
+		/* No device function table */
+		NULL,
+		/* Base interface address specified in driver */
+		NULL,
+		/* No cookie implementation */
+		0
+	},
+};
+
+/* add device descriptor to FPGA device table */
+static void socfpga_fpga_add(void)
+{
+	int i;
+	fpga_init();
+	for (i = 0; i < ARRAY_SIZE(altera_fpga); i++)
+		fpga_add(fpga_altera, &altera_fpga[i]);
+}
+#else
+static inline void socfpga_fpga_add(void) {}
+#endif
+
 int arch_cpu_init(void)
 {
 	/*
@@ -108,5 +142,7 @@ int arch_cpu_init(void)
 
 int misc_init_r(void)
 {
+	/* Add device descriptor to FPGA device table */
+	socfpga_fpga_add();
 	return 0;
 }