diff --git a/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk/p10bmc/a3.json b/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk/p10bmc/a3.json
new file mode 100644
index 0000000..fdcfd5d
--- /dev/null
+++ b/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk/p10bmc/a3.json
@@ -0,0 +1,126 @@
+{
+    "name": "rainier",
+    "version": "A3",
+    "data_region": {
+        "ecc_region": true,
+        "key": [
+            {
+                "types": "rsa_pub_oem",
+                "key_pem": "rsa_pub_oem_dss_key.pem",
+                "offset": "0x40",
+                "number_id": 0,
+                "sha_mode": "SHA512"
+            },
+            {
+                "types": "rsa_pub_oem",
+                "key_pem": "P10BMCAspeedSBPubKey_1.pem",
+                "offset": "0x240",
+                "number_id": 1,
+                "sha_mode": "SHA512"
+            },
+            {
+                "types": "rsa_pub_oem",
+                "key_pem": "P10BMCAspeedSBPubKey_2.pem",
+                "offset": "0x440",
+                "number_id": 2,
+                "sha_mode": "SHA512"
+            },
+            {
+                "types": "rsa_pub_oem",
+                "key_pem": "P10BMCAspeedSBPubKey_3.pem",
+                "offset": "0x640",
+                "number_id": 3,
+                "sha_mode": "SHA512"
+            }
+        ]
+    },
+    "config_region": {
+        "Disable OTP Memory BIST Mode":                 true,
+        "Enable Secure Boot":                           false,
+        "User region ECC enable":                       true,
+        "Secure Region ECC enable":                     false,
+        "Disable low security key":                     false,
+        "Ignore Secure Boot hardware strap":            false,
+        "Secure Boot Mode":                             "Mode_2",
+        "Disable Uart Message of ROM code":             false,
+        "Secure crypto RSA length":                     "RSA4096",
+        "Hash mode":                                    "SHA512",
+        "Disable patch code":                           true,
+        "Disable Boot from Uart":                       false,
+        "Secure Region size":                           "0x0",
+        "Write Protect: Secure Region":                 true,
+        "Write Protect: User region":                   true,
+        "Write Protect: Configure region":              true,
+        "Write Protect: OTP strap region":              true,
+        "Copy Boot Image to Internal SRAM":             true,
+        "Enable image encryption":                      false,
+        "Enable write Protect of OTP key retire bits":  false,
+        "Disable Auto Boot from UART or VUART":         false,
+        "OTP memory lock enable":                       false,
+        "Key Revision":                                 "0x0",
+        "Secure boot header offset":                    "0x0",
+        "Boot From UART Port Selection":                "UART5",
+        "Disable Auto Boot from UART":                  false,
+        "Disable Auto Boot from VUART2 over PCIE":      true,
+        "Disable Auto Boot from VUART2 over LPC":       true,
+        "Disable ROM code based programming control":   true,
+        "Rollback prevention shift bit number":         "0x0",
+        "Extra Data Write Protection Region Size":      "0x0",
+        "Erase signature data after secure boot check": false,
+        "Erase RSA public key after secure boot check": false,
+        "Keys Retire ID":                               0,
+        "User define data: random number low":          "0x0",
+        "User define data: random number high":         "0x0",
+        "Manifest ID":                                  "0x0",
+        "Patch code location":                          "0x0",
+        "Patch code size":                              "0x0"
+    },
+    "otp_strap": {
+        "Enable secure boot":                           { "value": false },
+        "Enable boot from eMMC":                        { "value": true },
+        "Boot from debug SPI":                          { "value": false },
+        "Disable ARM CM3":                              { "value": true },
+        "Enable dedicated VGA BIOS ROM":                { "value": false },
+        "MAC 1 RMII mode":                              { "value": "RMII/NCSI" },
+        "MAC 2 RMII mode":                              { "value": "RMII/NCSI" },
+        "CPU frequency":                                { "value": "1.2GHz" },
+        "HCLK ratio":                                   { "value": "default" },
+        "VGA memory size":                              { "value": "16MB" },
+        "CPU/AXI clock ratio":                          { "value": "2:1" },
+        "Disable ARM JTAG debug":                       { "value": true },
+        "VGA class code":                               { "value": "vga_device" },
+        "Disable debug 0":                              { "value": false },
+        "Boot from eMMC speed mode":                    { "value": "normal" },
+        "Enable PCIe EHCI":                             { "value": false },
+        "Disable ARM JTAG trust world debug":           { "value": true },
+        "Disable dedicated BMC function":               { "value": false },
+        "Enable dedicate PCIe RC reset":                { "value": false },
+        "Disable watchdog to reset full chip":          { "value": false },
+        "Internal bridge speed selection":              { "value": "1x" },
+        "Disable RVAS function":                        { "value": false },
+        "MAC 3 RMII mode":                              { "value": "RMII/NCSI" },
+        "MAC 4 RMII mode":                              { "value": "RMII/NCSI" },
+        "SuperIO configuration address selection":      { "value": "0x2e" },
+        "Disable LPC to decode SuperIO":                { "value": true },
+        "Disable debug 1":                              { "value": false },
+        "Enable ACPI":                                  { "value": false },
+        "Select LPC/eSPI":                              { "value": "LPC" },
+        "Enable SAFS":                                  { "value": false },
+        "Enable boot from uart5":                       { "value": false },
+        "Enable boot SPI 3B address mode auto-clear":   { "value": false },
+        "Enable SPI 3B/4B address mode auto detection": { "value": false },
+        "Enable boot SPI or eMMC ABR":                  { "value": true },
+        "Boot SPI ABR Mode":                            { "value": "dual" },
+        "Boot SPI flash size":                          { "value": "0" },
+        "Enable host SPI ABR":                          { "value": false },
+        "Enable host SPI ABR mode select pin":          { "value": false },
+        "Host SPI ABR Mode":                            { "value": "dual" },
+        "Host SPI flash size":                          { "value": "0" },
+        "Enable boot SPI auxiliary control pins":       { "value": false },
+        "Boot SPI CRTM size":                           { "value": "0" },
+        "Host SPI CRTM size":                           { "value": "0" },
+        "Enable host SPI auxiliary control pins":       { "value": false },
+        "Enable GPIO Pass Through":                     { "value": false },
+        "Enable Dedicate GPIO Strap Pins":              { "value": false }
+    }
+}
diff --git a/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk/p10bmc/keys/P10BMCAspeedSBPubKey_1.pem b/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk/p10bmc/keys/P10BMCAspeedSBPubKey_1.pem
new file mode 100644
index 0000000..eeba16b
--- /dev/null
+++ b/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk/p10bmc/keys/P10BMCAspeedSBPubKey_1.pem
@@ -0,0 +1,14 @@
+-----BEGIN PUBLIC KEY-----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+-----END PUBLIC KEY-----
diff --git a/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk/p10bmc/keys/P10BMCAspeedSBPubKey_2.pem b/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk/p10bmc/keys/P10BMCAspeedSBPubKey_2.pem
new file mode 100644
index 0000000..6247058
--- /dev/null
+++ b/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk/p10bmc/keys/P10BMCAspeedSBPubKey_2.pem
@@ -0,0 +1,14 @@
+-----BEGIN PUBLIC KEY-----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+-----END PUBLIC KEY-----
diff --git a/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk/p10bmc/keys/P10BMCAspeedSBPubKey_3.pem b/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk/p10bmc/keys/P10BMCAspeedSBPubKey_3.pem
new file mode 100644
index 0000000..062be04
--- /dev/null
+++ b/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk/p10bmc/keys/P10BMCAspeedSBPubKey_3.pem
@@ -0,0 +1,14 @@
+-----BEGIN PUBLIC KEY-----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+-----END PUBLIC KEY-----
diff --git a/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk_2019.04.bbappend b/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk_2019.04.bbappend
new file mode 100644
index 0000000..2a99328
--- /dev/null
+++ b/meta-ibm/recipes-bsp/u-boot/u-boot-aspeed-sdk_2019.04.bbappend
@@ -0,0 +1,20 @@
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
+
+SRC_URI:append:p10bmc = " file://a3.json file://keys/"
+
+OTPTOOL_CONFIG:p10bmc = "${WORKDIR}/a3.json"
+OTPTOOL_KEY_DIR:p10bmc = "${WORKDIR}/keys/"
+
+# !!! Do not copy p10bmc's use of little-endian key ordering !!!
+#
+# The prefered order for production silicon is big-endian. Little-endian is necessary for p10bmc
+# platforms due to development history involving pre-production AST2600 silicon. More discussion
+# here:
+#
+# https://gerrit.openbmc-project.xyz/c/openbmc/openbmc/+/50716
+SOCSEC_SIGN_EXTRA_OPTS = "--rsa_key_order=little"
+
+do_deploy:prepend:p10bmc() {
+	# otptool needs access to the public and private socsec signing keys in the keys/ directory
+	openssl rsa -in ${SOCSEC_SIGN_KEY} -pubout > ${WORKDIR}/keys/rsa_pub_oem_dss_key.pem
+}