From 7185bbd127ec5bd1fbeee5a90f7ecfdff03531ec Mon Sep 17 00:00:00 2001
From: Petr Nechaev <petr.nechaev@cogentembedded.com>
Date: Sun, 16 Oct 2022 15:32:16 +0300
Subject: [PATCH 1/2] Support for microchip SST26VF064B flash

---
 src/spiFlashdb.hpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/spiFlashdb.hpp b/src/spiFlashdb.hpp
index 23b32aa..b85319e 100644
--- a/src/spiFlashdb.hpp
+++ b/src/spiFlashdb.hpp
@@ -177,6 +177,19 @@ static std::map <uint32_t, flash_t> flash_list = {
 		.bp_len = 0,
 		.bp_offset = {0, 0, 0, 0}}
 	},
+	{0xBF2643, {
+		.manufacturer = "microchip",
+		.model = "SST26VF064B",
+		.nr_sector = 128,
+		.sector_erase = true,
+		.subsector_erase = true,
+		.has_extended = false,
+		.tb_otp = false,
+		.tb_offset = 0,
+		.tb_register = NONER,
+		.bp_len = 0,
+		.bp_offset = {0, 0, 0, 0}}
+	},
 	{0x9d6016, {
 		.manufacturer = "ISSI",
 		.model = "IS25LP032",

From 1bbe448f3a8b22fb7aadb7300100101a1ccc0eae Mon Sep 17 00:00:00 2001
From: Petr Nechaev <petr.nechaev@cogentembedded.com>
Date: Sun, 16 Oct 2022 15:44:33 +0300
Subject: [PATCH 2/2] Limit automatic read burst length to 64K

Reading of very large binaries (e.g. 32 MB) can cause stack overflow.
Put a reasonable limit on read burst length.
---
 src/spiFlash.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/spiFlash.cpp b/src/spiFlash.cpp
index ed5832b..e1e75b6 100644
--- a/src/spiFlash.cpp
+++ b/src/spiFlash.cpp
@@ -382,8 +382,11 @@ int SPIFlash::erase_and_prog(int base_addr, uint8_t *data, int len)
 bool SPIFlash::verify(const int &base_addr, const uint8_t *data,
 		const int &len, int rd_burst)
 {
-	if (rd_burst == 0)
+	if (rd_burst == 0) {
 		rd_burst = len;
+		if (rd_burst > 65536)
+			rd_burst = 65536;
+	}
 
 	printInfo("Verifying write (May take time)");