Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / avr32 / include / asm / sdram.h

diff --git a/qemu/roms/u-boot/arch/avr32/include/asm/sdram.h b/qemu/roms/u-boot/arch/avr32/include/asm/sdram.h
new file mode 100644 (file)
index 0000000..83d515b
--- /dev/null
+++ b/qemu/roms/u-boot/arch/avr32/include/asm/sdram.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2006 Atmel Corporation
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+#ifndef __ASM_AVR32_SDRAM_H
+#define __ASM_AVR32_SDRAM_H
+
+struct sdram_config {
+       /* Number of data bits. */
+       enum {
+               SDRAM_DATA_16BIT = 16,
+               SDRAM_DATA_32BIT = 32,
+       } data_bits;
+
+       /* Number of address bits */
+       uint8_t row_bits, col_bits, bank_bits;
+
+       /* SDRAM timings in cycles */
+       uint8_t cas, twr, trc, trp, trcd, tras, txsr;
+
+       /* SDRAM refresh period in cycles */
+       unsigned long refresh_period;
+};
+
+/*
+ * Attempt to initialize the SDRAM controller using the specified
+ * parameters. Return the expected size of the memory area based on
+ * the number of address and data bits.
+ *
+ * The caller should verify that the configuration is correct by
+ * running a memory test, e.g. get_ram_size().
+ */
+extern unsigned long sdram_init(void *sdram_base,
+                       const struct sdram_config *config);
+
+#endif /* __ASM_AVR32_SDRAM_H */