flashchips: Add ZD25D20

This adds another Zetta Device chip, the ZD25D20.

Change-Id: Idf805252647be44e28296a161d2e6160710bcc71
Signed-off-by: David Hendricks <david.hendricks@gmail.com>
Reviewed-on: https://review.coreboot.org/23702
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

flashchips.c

@@ -16330,6 +16330,44 @@ const struct flashchip flashchips[] = {
 		.voltage	= {3000, 3600}, /* Also has 12V fast program */
 	},
 
+	{
+		.vendor         = "Zetta Device",
+		.name           = "ZD25D20",
+		.bustype        = BUS_SPI,
+		.manufacture_id = ZETTADEVICE_ID,
+		.model_id       = ZETTADEVICE_ZD25D20,
+		.total_size     = 256,
+		.page_size      = 256,
+		.feature_bits   = FEATURE_WRSR_WREN,
+		.tested         = TEST_UNTESTED,
+		.probe          = probe_spi_rdid,
+		.probe_timing   = TIMING_ZERO,
+		.block_erasers  =
+		{
+			{
+				.eraseblocks = { {4 * 1024, 64} },
+				.block_erase = spi_block_erase_20,
+			}, {
+				.eraseblocks = { {32 * 1024, 8} },
+				.block_erase = spi_block_erase_52,
+			}, {
+				.eraseblocks = { {64 * 1024, 4} },
+				.block_erase = spi_block_erase_d8,
+			}, {
+				.eraseblocks = { {256 * 1024, 1} },
+				.block_erase = spi_block_erase_60,
+			}, {
+				.eraseblocks = { {256 * 1024, 1} },
+				.block_erase = spi_block_erase_c7,
+			}
+		},
+		.printlock      = spi_prettyprint_status_register_plain, /* TODO: improve */
+		.unlock         = spi_disable_blockprotect,
+		.write          = spi_chip_write_256,
+		.read           = spi_chip_read,
+		.voltage        = {2700, 3600},
+	},
+
 	{
 		.vendor         = "Zetta Device",
 		.name           = "ZD25D40",

flashchips.h

@@ -958,6 +958,7 @@
 #define WINBOND_W49V002FA	0x32
 
 #define ZETTADEVICE_ID          0xBA	/* Zetta Device */
+#define ZETTADEVICE_ZD25D20     0x2012
 #define ZETTADEVICE_ZD25D40     0x2013
 
 #endif /* !FLASHCHIPS_H */