rom.sh: simplify u-boot payload handling

define it with a single variable, rather than several.

this allows several checks to be greatly simplified.

Signed-off-by: Leah Rowe <leah@libreboot.org>

91 files changed, 107 insertions, 115 deletions

diff --git a/config/coreboot/dell3050micro_vfsp_16mb/target.cfg b/config/coreboot/dell3050micro_vfsp_16mb/target.cfg
index f86065a1..e100fbed 100644
--- a/config/coreboot/dell3050micro_vfsp_16mb/target.cfg
+++ b/config/coreboot/dell3050micro_vfsp_16mb/target.cfg
@@ -10,4 +10,4 @@ grubtree="xhci"
 vcfg="3050micro"
 build_depend="seabios/default grub/xhci memtest86plus u-boot/amd64coreboot"
 IFD_platform="sklkbl"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/dell7010sff_12mb/target.cfg b/config/coreboot/dell7010sff_12mb/target.cfg
index de6a8af8..34865f86 100644
--- a/config/coreboot/dell7010sff_12mb/target.cfg
+++ b/config/coreboot/dell7010sff_12mb/target.cfg
@@ -9,4 +9,4 @@ grub_scan_disk="nvme ahci"
 grubtree="nvme"
 vcfg="t1650"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/dell780mt_8mb/target.cfg b/config/coreboot/dell780mt_8mb/target.cfg
index 45b8ea0b..a58de7bd 100644
--- a/config/coreboot/dell780mt_8mb/target.cfg
+++ b/config/coreboot/dell780mt_8mb/target.cfg
@@ -8,4 +8,4 @@ payload_memtest="y"
 grub_scan_disk="nvme ahci ata"
 grubtree="nvme"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/dell780mt_truncate_8mb/target.cfg b/config/coreboot/dell780mt_truncate_8mb/target.cfg
index 45b8ea0b..a58de7bd 100644
--- a/config/coreboot/dell780mt_truncate_8mb/target.cfg
+++ b/config/coreboot/dell780mt_truncate_8mb/target.cfg
@@ -8,4 +8,4 @@ payload_memtest="y"
 grub_scan_disk="nvme ahci ata"
 grubtree="nvme"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/dell780usff_8mb/target.cfg b/config/coreboot/dell780usff_8mb/target.cfg
index 45b8ea0b..a58de7bd 100644
--- a/config/coreboot/dell780usff_8mb/target.cfg
+++ b/config/coreboot/dell780usff_8mb/target.cfg
@@ -8,4 +8,4 @@ payload_memtest="y"
 grub_scan_disk="nvme ahci ata"
 grubtree="nvme"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/dell780usff_truncate_8mb/target.cfg b/config/coreboot/dell780usff_truncate_8mb/target.cfg
index 45b8ea0b..a58de7bd 100644
--- a/config/coreboot/dell780usff_truncate_8mb/target.cfg
+++ b/config/coreboot/dell780usff_truncate_8mb/target.cfg
@@ -8,4 +8,4 @@ payload_memtest="y"
 grub_scan_disk="nvme ahci ata"
 grubtree="nvme"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/dell9020mt_nri_12mb/target.cfg b/config/coreboot/dell9020mt_nri_12mb/target.cfg
index 96fbb9e3..7c26ae5e 100644
--- a/config/coreboot/dell9020mt_nri_12mb/target.cfg
+++ b/config/coreboot/dell9020mt_nri_12mb/target.cfg
@@ -9,4 +9,4 @@ grub_scan_disk="nvme ahci"
 grubtree="xhci"
 vcfg="haswell"
 build_depend="seabios/default grub/xhci memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/dell9020sff_nri_12mb/target.cfg b/config/coreboot/dell9020sff_nri_12mb/target.cfg
index 96fbb9e3..7c26ae5e 100644
--- a/config/coreboot/dell9020sff_nri_12mb/target.cfg
+++ b/config/coreboot/dell9020sff_nri_12mb/target.cfg
@@ -9,4 +9,4 @@ grub_scan_disk="nvme ahci"
 grubtree="xhci"
 vcfg="haswell"
 build_depend="seabios/default grub/xhci memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/e4300_4mb/target.cfg b/config/coreboot/e4300_4mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/e4300_4mb/target.cfg
+++ b/config/coreboot/e4300_4mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/e5420_6mb/target.cfg b/config/coreboot/e5420_6mb/target.cfg
index 333030ce..d7510b96 100644
--- a/config/coreboot/e5420_6mb/target.cfg
+++ b/config/coreboot/e5420_6mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="sandybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/e5520_6mb/target.cfg b/config/coreboot/e5520_6mb/target.cfg
index 333030ce..d7510b96 100644
--- a/config/coreboot/e5520_6mb/target.cfg
+++ b/config/coreboot/e5520_6mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="sandybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/e5530_12mb/target.cfg b/config/coreboot/e5530_12mb/target.cfg
index 6cbab731..595ad782 100644
--- a/config/coreboot/e5530_12mb/target.cfg
+++ b/config/coreboot/e5530_12mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/e6220_10mb/target.cfg b/config/coreboot/e6220_10mb/target.cfg
index 333030ce..d7510b96 100644
--- a/config/coreboot/e6220_10mb/target.cfg
+++ b/config/coreboot/e6220_10mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="sandybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/e6230_12mb/target.cfg b/config/coreboot/e6230_12mb/target.cfg
index b491fdc8..42eca05e 100644
--- a/config/coreboot/e6230_12mb/target.cfg
+++ b/config/coreboot/e6230_12mb/target.cfg
@@ -7,5 +7,5 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
+payload_uboot="amd64"
diff --git a/config/coreboot/e6320_10mb/target.cfg b/config/coreboot/e6320_10mb/target.cfg
index 333030ce..d7510b96 100644
--- a/config/coreboot/e6320_10mb/target.cfg
+++ b/config/coreboot/e6320_10mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="sandybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/e6330_12mb/target.cfg b/config/coreboot/e6330_12mb/target.cfg
index 6cbab731..595ad782 100644
--- a/config/coreboot/e6330_12mb/target.cfg
+++ b/config/coreboot/e6330_12mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/e6400_4mb/target.cfg b/config/coreboot/e6400_4mb/target.cfg
index b999b10c..f7500e97 100644
--- a/config/coreboot/e6400_4mb/target.cfg
+++ b/config/coreboot/e6400_4mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="e6400"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/e6420_10mb/target.cfg b/config/coreboot/e6420_10mb/target.cfg
index 333030ce..d7510b96 100644
--- a/config/coreboot/e6420_10mb/target.cfg
+++ b/config/coreboot/e6420_10mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="sandybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/e6430_12mb/target.cfg b/config/coreboot/e6430_12mb/target.cfg
index 6cbab731..595ad782 100644
--- a/config/coreboot/e6430_12mb/target.cfg
+++ b/config/coreboot/e6430_12mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/e6520_10mb/target.cfg b/config/coreboot/e6520_10mb/target.cfg
index 333030ce..d7510b96 100644
--- a/config/coreboot/e6520_10mb/target.cfg
+++ b/config/coreboot/e6520_10mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="sandybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/e6530_12mb/target.cfg b/config/coreboot/e6530_12mb/target.cfg
index 6cbab731..595ad782 100644
--- a/config/coreboot/e6530_12mb/target.cfg
+++ b/config/coreboot/e6530_12mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/g43t_am3/target.cfg b/config/coreboot/g43t_am3/target.cfg
index 3379b716..357eee9a 100644
--- a/config/coreboot/g43t_am3/target.cfg
+++ b/config/coreboot/g43t_am3/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_memtest="y"
 grubtree="nvme"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/g43t_am3_16mb/target.cfg b/config/coreboot/g43t_am3_16mb/target.cfg
index f2f0a52d..a097a3e8 100644
--- a/config/coreboot/g43t_am3_16mb/target.cfg
+++ b/config/coreboot/g43t_am3_16mb/target.cfg
@@ -7,4 +7,4 @@ payload_memtest="y"
 release="n"
 grubtree="nvme"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/gru_bob/target.cfg b/config/coreboot/gru_bob/target.cfg
index e5866cb7..dda11b5f 100644
--- a/config/coreboot/gru_bob/target.cfg
+++ b/config/coreboot/gru_bob/target.cfg
@@ -2,5 +2,5 @@
 
 tree="default"
 xarch="aarch64-elf arm-eabi"
-payload_uboot="y"
+payload_uboot="arm64"
 build_depend="u-boot/gru_bob"
diff --git a/config/coreboot/gru_kevin/target.cfg b/config/coreboot/gru_kevin/target.cfg
index 81a93f27..26fd442b 100644
--- a/config/coreboot/gru_kevin/target.cfg
+++ b/config/coreboot/gru_kevin/target.cfg
@@ -2,5 +2,5 @@
 
 tree="default"
 xarch="aarch64-elf arm-eabi"
-payload_uboot="y"
+payload_uboot="arm64"
 build_depend="u-boot/gru_kevin"
diff --git a/config/coreboot/hp2170p_16mb/target.cfg b/config/coreboot/hp2170p_16mb/target.cfg
index e1cffa41..d6868831 100644
--- a/config/coreboot/hp2170p_16mb/target.cfg
+++ b/config/coreboot/hp2170p_16mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="hp2170p"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/hp2560p_8mb/target.cfg b/config/coreboot/hp2560p_8mb/target.cfg
index 5715390e..fce385d9 100644
--- a/config/coreboot/hp2560p_8mb/target.cfg
+++ b/config/coreboot/hp2560p_8mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="hp2560p"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/hp2570p_16mb/target.cfg b/config/coreboot/hp2570p_16mb/target.cfg
index fb5d41e1..26c80f5f 100644
--- a/config/coreboot/hp2570p_16mb/target.cfg
+++ b/config/coreboot/hp2570p_16mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="hp2570p"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/hp8200sff_4mb/target.cfg b/config/coreboot/hp8200sff_4mb/target.cfg
index 521ba0ec..76effd9f 100644
--- a/config/coreboot/hp8200sff_4mb/target.cfg
+++ b/config/coreboot/hp8200sff_4mb/target.cfg
@@ -9,4 +9,4 @@ grub_scan_disk="nvme ahci"
 grubtree="nvme"
 vcfg="hp8200sff"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/hp8200sff_8mb/target.cfg b/config/coreboot/hp8200sff_8mb/target.cfg
index 521ba0ec..76effd9f 100644
--- a/config/coreboot/hp8200sff_8mb/target.cfg
+++ b/config/coreboot/hp8200sff_8mb/target.cfg
@@ -9,4 +9,4 @@ grub_scan_disk="nvme ahci"
 grubtree="nvme"
 vcfg="hp8200sff"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/hp820g2_12mb/target.cfg b/config/coreboot/hp820g2_12mb/target.cfg
index 7fe45119..66d0433e 100644
--- a/config/coreboot/hp820g2_12mb/target.cfg
+++ b/config/coreboot/hp820g2_12mb/target.cfg
@@ -9,4 +9,4 @@ grub_scan_disk="nvme ahci"
 grubtree="xhci"
 vcfg="hp820g2"
 build_depend="seabios/default grub/xhci memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/hp8300cmt_16mb/target.cfg b/config/coreboot/hp8300cmt_16mb/target.cfg
index 5bd323c9..f3fb43a7 100644
--- a/config/coreboot/hp8300cmt_16mb/target.cfg
+++ b/config/coreboot/hp8300cmt_16mb/target.cfg
@@ -9,4 +9,4 @@ grub_scan_disk="nvme ahci"
 grubtree="nvme"
 vcfg="ivybridge"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/hp8300usdt_16mb/target.cfg b/config/coreboot/hp8300usdt_16mb/target.cfg
index 6cbab731..595ad782 100644
--- a/config/coreboot/hp8300usdt_16mb/target.cfg
+++ b/config/coreboot/hp8300usdt_16mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/hp8460pintel_8mb/target.cfg b/config/coreboot/hp8460pintel_8mb/target.cfg
index d6179420..255bfac7 100644
--- a/config/coreboot/hp8460pintel_8mb/target.cfg
+++ b/config/coreboot/hp8460pintel_8mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="hp8460pintel"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/hp8470pintel_16mb/target.cfg b/config/coreboot/hp8470pintel_16mb/target.cfg
index 65828b25..01b2ed5b 100644
--- a/config/coreboot/hp8470pintel_16mb/target.cfg
+++ b/config/coreboot/hp8470pintel_16mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="hp8470pintel"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/hp9470m_16mb/target.cfg b/config/coreboot/hp9470m_16mb/target.cfg
index e4dbdc93..6ebd81c5 100644
--- a/config/coreboot/hp9470m_16mb/target.cfg
+++ b/config/coreboot/hp9470m_16mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="hp9470m"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/kcma_d8_16mb/target.cfg b/config/coreboot/kcma_d8_16mb/target.cfg
index 112c101f..75955f7e 100644
--- a/config/coreboot/kcma_d8_16mb/target.cfg
+++ b/config/coreboot/kcma_d8_16mb/target.cfg
@@ -9,4 +9,4 @@ xlang="c"
 grub_scan_disk="nvme ahci"
 grubtree="nvme"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/kcma_d8_2mb/target.cfg b/config/coreboot/kcma_d8_2mb/target.cfg
index 112c101f..75955f7e 100644
--- a/config/coreboot/kcma_d8_2mb/target.cfg
+++ b/config/coreboot/kcma_d8_2mb/target.cfg
@@ -9,4 +9,4 @@ xlang="c"
 grub_scan_disk="nvme ahci"
 grubtree="nvme"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/kfsn4_dre_1mb/target.cfg b/config/coreboot/kfsn4_dre_1mb/target.cfg
index a87ac1ad..c4536856 100644
--- a/config/coreboot/kfsn4_dre_1mb/target.cfg
+++ b/config/coreboot/kfsn4_dre_1mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_memtest="y"
 xlang="c"
 build_depend="seabios/default memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/kfsn4_dre_2mb/target.cfg b/config/coreboot/kfsn4_dre_2mb/target.cfg
index 17021b47..f942604b 100644
--- a/config/coreboot/kfsn4_dre_2mb/target.cfg
+++ b/config/coreboot/kfsn4_dre_2mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 xlang="c"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/kgpe_d16_16mb/target.cfg b/config/coreboot/kgpe_d16_16mb/target.cfg
index 112c101f..75955f7e 100644
--- a/config/coreboot/kgpe_d16_16mb/target.cfg
+++ b/config/coreboot/kgpe_d16_16mb/target.cfg
@@ -9,4 +9,4 @@ xlang="c"
 grub_scan_disk="nvme ahci"
 grubtree="nvme"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/kgpe_d16_2mb/target.cfg b/config/coreboot/kgpe_d16_2mb/target.cfg
index 112c101f..75955f7e 100644
--- a/config/coreboot/kgpe_d16_2mb/target.cfg
+++ b/config/coreboot/kgpe_d16_2mb/target.cfg
@@ -9,4 +9,4 @@ xlang="c"
 grub_scan_disk="nvme ahci"
 grubtree="nvme"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/macbook11/target.cfg b/config/coreboot/macbook11/target.cfg
index c1e3a3c6..f41e3fe9 100644
--- a/config/coreboot/macbook11/target.cfg
+++ b/config/coreboot/macbook11/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 grub_scan_disk="ahci"
 build_depend="seabios/default grub/default u-boot/i386coreboot"
-payload_uboot_i386="y"
+payload_uboot="i386"
diff --git a/config/coreboot/macbook11_16mb/target.cfg b/config/coreboot/macbook11_16mb/target.cfg
index e0d1afbf..ff2498eb 100644
--- a/config/coreboot/macbook11_16mb/target.cfg
+++ b/config/coreboot/macbook11_16mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 scan_scan_disk="ahci"
 build_depend="seabios/default grub/default u-boot/i386coreboot"
-payload_uboot_i386="y"
+payload_uboot="i386"
diff --git a/config/coreboot/macbook21/target.cfg b/config/coreboot/macbook21/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/macbook21/target.cfg
+++ b/config/coreboot/macbook21/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/macbook21_16mb/target.cfg b/config/coreboot/macbook21_16mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/macbook21_16mb/target.cfg
+++ b/config/coreboot/macbook21_16mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/q45t_am/target.cfg b/config/coreboot/q45t_am/target.cfg
index 3379b716..357eee9a 100644
--- a/config/coreboot/q45t_am/target.cfg
+++ b/config/coreboot/q45t_am/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_memtest="y"
 grubtree="nvme"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/qemu_arm64_12mb/target.cfg b/config/coreboot/qemu_arm64_12mb/target.cfg
index 5d8f0db2..2ea9482f 100644
--- a/config/coreboot/qemu_arm64_12mb/target.cfg
+++ b/config/coreboot/qemu_arm64_12mb/target.cfg
@@ -2,5 +2,5 @@
 
 tree="default"
 xarch="aarch64-elf arm-eabi"
-payload_uboot="y"
+payload_uboot="arm64"
 build_depend="u-boot/qemu_arm64_12mb"
diff --git a/config/coreboot/qemu_x86_12mb/target.cfg b/config/coreboot/qemu_x86_12mb/target.cfg
index 2074beca..476a98cb 100644
--- a/config/coreboot/qemu_x86_12mb/target.cfg
+++ b/config/coreboot/qemu_x86_12mb/target.cfg
@@ -6,4 +6,4 @@ payload_grub="y"
 payload_seabios="y"
 payload_memtest="y"
 build_depend="seabios/default grub/default memtest86plus u-boot/i386coreboot"
-payload_uboot_i386="y"
+payload_uboot="i386"
diff --git a/config/coreboot/qemu_x86_64_12mb/target.cfg b/config/coreboot/qemu_x86_64_12mb/target.cfg
index 7855bd6f..61ae6299 100644
--- a/config/coreboot/qemu_x86_64_12mb/target.cfg
+++ b/config/coreboot/qemu_x86_64_12mb/target.cfg
@@ -5,4 +5,4 @@ xarch="i386-elf"
 payload_grub="y"
 payload_seabios="y"
 payload_memtest="y"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/r400_16mb/target.cfg b/config/coreboot/r400_16mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/r400_16mb/target.cfg
+++ b/config/coreboot/r400_16mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/r400_4mb/target.cfg b/config/coreboot/r400_4mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/r400_4mb/target.cfg
+++ b/config/coreboot/r400_4mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/r400_8mb/target.cfg b/config/coreboot/r400_8mb/target.cfg
index ef878ea1..23bfb335 100644
--- a/config/coreboot/r400_8mb/target.cfg
+++ b/config/coreboot/r400_8mb/target.cfg
@@ -5,4 +5,4 @@ xarch="i386-elf"
 payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/r500_4mb/target.cfg b/config/coreboot/r500_4mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/r500_4mb/target.cfg
+++ b/config/coreboot/r500_4mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t1650_12mb/target.cfg b/config/coreboot/t1650_12mb/target.cfg
index de6a8af8..34865f86 100644
--- a/config/coreboot/t1650_12mb/target.cfg
+++ b/config/coreboot/t1650_12mb/target.cfg
@@ -9,4 +9,4 @@ grub_scan_disk="nvme ahci"
 grubtree="nvme"
 vcfg="t1650"
 build_depend="seabios/default grub/nvme memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t1700mt_bmrc_12mb/target.cfg b/config/coreboot/t1700mt_bmrc_12mb/target.cfg
index 06de408c..5fd0d500 100644
--- a/config/coreboot/t1700mt_bmrc_12mb/target.cfg
+++ b/config/coreboot/t1700mt_bmrc_12mb/target.cfg
@@ -9,4 +9,4 @@ grub_scan_disk="nvme ahci"
 grubtree="xhci"
 vcfg="t1700"
 build_depend="seabios/default grub/xhci memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t1700sff_bmrc_12mb/target.cfg b/config/coreboot/t1700sff_bmrc_12mb/target.cfg
index 06de408c..5fd0d500 100644
--- a/config/coreboot/t1700sff_bmrc_12mb/target.cfg
+++ b/config/coreboot/t1700sff_bmrc_12mb/target.cfg
@@ -9,4 +9,4 @@ grub_scan_disk="nvme ahci"
 grubtree="xhci"
 vcfg="t1700"
 build_depend="seabios/default grub/xhci memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t400_16mb/target.cfg b/config/coreboot/t400_16mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/t400_16mb/target.cfg
+++ b/config/coreboot/t400_16mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t400_4mb/target.cfg b/config/coreboot/t400_4mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/t400_4mb/target.cfg
+++ b/config/coreboot/t400_4mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t400_8mb/target.cfg b/config/coreboot/t400_8mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/t400_8mb/target.cfg
+++ b/config/coreboot/t400_8mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t420_8mb/target.cfg b/config/coreboot/t420_8mb/target.cfg
index 333030ce..d7510b96 100644
--- a/config/coreboot/t420_8mb/target.cfg
+++ b/config/coreboot/t420_8mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="sandybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t420s_8mb/target.cfg b/config/coreboot/t420s_8mb/target.cfg
index 333030ce..d7510b96 100644
--- a/config/coreboot/t420s_8mb/target.cfg
+++ b/config/coreboot/t420s_8mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="sandybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t430_12mb/target.cfg b/config/coreboot/t430_12mb/target.cfg
index 6cbab731..595ad782 100644
--- a/config/coreboot/t430_12mb/target.cfg
+++ b/config/coreboot/t430_12mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t440plibremrc_12mb/target.cfg b/config/coreboot/t440plibremrc_12mb/target.cfg
index 96fbb9e3..7c26ae5e 100644
--- a/config/coreboot/t440plibremrc_12mb/target.cfg
+++ b/config/coreboot/t440plibremrc_12mb/target.cfg
@@ -9,4 +9,4 @@ grub_scan_disk="nvme ahci"
 grubtree="xhci"
 vcfg="haswell"
 build_depend="seabios/default grub/xhci memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t500_16mb/target.cfg b/config/coreboot/t500_16mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/t500_16mb/target.cfg
+++ b/config/coreboot/t500_16mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t500_4mb/target.cfg b/config/coreboot/t500_4mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/t500_4mb/target.cfg
+++ b/config/coreboot/t500_4mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t500_8mb/target.cfg b/config/coreboot/t500_8mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/t500_8mb/target.cfg
+++ b/config/coreboot/t500_8mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t520_8mb/target.cfg b/config/coreboot/t520_8mb/target.cfg
index 333030ce..d7510b96 100644
--- a/config/coreboot/t520_8mb/target.cfg
+++ b/config/coreboot/t520_8mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="sandybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t530_12mb/target.cfg b/config/coreboot/t530_12mb/target.cfg
index 6cbab731..595ad782 100644
--- a/config/coreboot/t530_12mb/target.cfg
+++ b/config/coreboot/t530_12mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/t60_16mb_intelgpu/target.cfg b/config/coreboot/t60_16mb_intelgpu/target.cfg
index c1e3a3c6..f41e3fe9 100644
--- a/config/coreboot/t60_16mb_intelgpu/target.cfg
+++ b/config/coreboot/t60_16mb_intelgpu/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 grub_scan_disk="ahci"
 build_depend="seabios/default grub/default u-boot/i386coreboot"
-payload_uboot_i386="y"
+payload_uboot="i386"
diff --git a/config/coreboot/t60_intelgpu/target.cfg b/config/coreboot/t60_intelgpu/target.cfg
index c1e3a3c6..f41e3fe9 100644
--- a/config/coreboot/t60_intelgpu/target.cfg
+++ b/config/coreboot/t60_intelgpu/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 grub_scan_disk="ahci"
 build_depend="seabios/default grub/default u-boot/i386coreboot"
-payload_uboot_i386="y"
+payload_uboot="i386"
diff --git a/config/coreboot/w500_16mb/target.cfg b/config/coreboot/w500_16mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/w500_16mb/target.cfg
+++ b/config/coreboot/w500_16mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/w500_4mb/target.cfg b/config/coreboot/w500_4mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/w500_4mb/target.cfg
+++ b/config/coreboot/w500_4mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/w500_8mb/target.cfg b/config/coreboot/w500_8mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/w500_8mb/target.cfg
+++ b/config/coreboot/w500_8mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/w530_12mb/target.cfg b/config/coreboot/w530_12mb/target.cfg
index 6cbab731..595ad782 100644
--- a/config/coreboot/w530_12mb/target.cfg
+++ b/config/coreboot/w530_12mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/w541_12mb/target.cfg b/config/coreboot/w541_12mb/target.cfg
index 96fbb9e3..7c26ae5e 100644
--- a/config/coreboot/w541_12mb/target.cfg
+++ b/config/coreboot/w541_12mb/target.cfg
@@ -9,4 +9,4 @@ grub_scan_disk="nvme ahci"
 grubtree="xhci"
 vcfg="haswell"
 build_depend="seabios/default grub/xhci memtest86plus u-boot/amd64coreboot"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/x200_16mb/target.cfg b/config/coreboot/x200_16mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/x200_16mb/target.cfg
+++ b/config/coreboot/x200_16mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/x200_4mb/target.cfg b/config/coreboot/x200_4mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/x200_4mb/target.cfg
+++ b/config/coreboot/x200_4mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/x200_8mb/target.cfg b/config/coreboot/x200_8mb/target.cfg
index 53a597b6..f4d81d19 100644
--- a/config/coreboot/x200_8mb/target.cfg
+++ b/config/coreboot/x200_8mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/x220_8mb/target.cfg b/config/coreboot/x220_8mb/target.cfg
index 333030ce..d7510b96 100644
--- a/config/coreboot/x220_8mb/target.cfg
+++ b/config/coreboot/x220_8mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="sandybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/x230_12mb/target.cfg b/config/coreboot/x230_12mb/target.cfg
index 6cbab731..595ad782 100644
--- a/config/coreboot/x230_12mb/target.cfg
+++ b/config/coreboot/x230_12mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/x230_16mb/target.cfg b/config/coreboot/x230_16mb/target.cfg
index 6cbab731..595ad782 100644
--- a/config/coreboot/x230_16mb/target.cfg
+++ b/config/coreboot/x230_16mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/x230t_12mb/target.cfg b/config/coreboot/x230t_12mb/target.cfg
index 6cbab731..595ad782 100644
--- a/config/coreboot/x230t_12mb/target.cfg
+++ b/config/coreboot/x230t_12mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/x230t_16mb/target.cfg b/config/coreboot/x230t_16mb/target.cfg
index 6cbab731..595ad782 100644
--- a/config/coreboot/x230t_16mb/target.cfg
+++ b/config/coreboot/x230t_16mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 grub_scan_disk="ahci"
 vcfg="ivybridge"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/x301_16mb/target.cfg b/config/coreboot/x301_16mb/target.cfg
index 4d4a4c25..31e9f759 100644
--- a/config/coreboot/x301_16mb/target.cfg
+++ b/config/coreboot/x301_16mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 release="n"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/x301_4mb/target.cfg b/config/coreboot/x301_4mb/target.cfg
index 4d4a4c25..31e9f759 100644
--- a/config/coreboot/x301_4mb/target.cfg
+++ b/config/coreboot/x301_4mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 release="n"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/x301_8mb/target.cfg b/config/coreboot/x301_8mb/target.cfg
index 4d4a4c25..31e9f759 100644
--- a/config/coreboot/x301_8mb/target.cfg
+++ b/config/coreboot/x301_8mb/target.cfg
@@ -7,4 +7,4 @@ payload_grub="y"
 payload_memtest="y"
 release="n"
 grub_scan_disk="ahci"
-payload_uboot_amd64="y"
+payload_uboot="amd64"
diff --git a/config/coreboot/x60/target.cfg b/config/coreboot/x60/target.cfg
index c1e3a3c6..f41e3fe9 100644
--- a/config/coreboot/x60/target.cfg
+++ b/config/coreboot/x60/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 grub_scan_disk="ahci"
 build_depend="seabios/default grub/default u-boot/i386coreboot"
-payload_uboot_i386="y"
+payload_uboot="i386"
diff --git a/config/coreboot/x60_16mb/target.cfg b/config/coreboot/x60_16mb/target.cfg
index c1e3a3c6..f41e3fe9 100644
--- a/config/coreboot/x60_16mb/target.cfg
+++ b/config/coreboot/x60_16mb/target.cfg
@@ -6,4 +6,4 @@ payload_seabios="y"
 payload_grub="y"
 grub_scan_disk="ahci"
 build_depend="seabios/default grub/default u-boot/i386coreboot"
-payload_uboot_i386="y"
+payload_uboot="i386"
diff --git a/config/data/coreboot/mkhelper.cfg b/config/data/coreboot/mkhelper.cfg
index c993fbd4..630654a0 100644
--- a/config/data/coreboot/mkhelper.cfg
+++ b/config/data/coreboot/mkhelper.cfg
@@ -5,10 +5,9 @@ build_depend="seabios/default grub/default memtest86plus u-boot/amd64coreboot"
 
 seavgabiosrom="elf/seabios/default/libgfxinit/vgabios.bin"
 
-pv="payload_uboot payload_seabios payload_memtest payload_grub"
-pv="$pv payload_uboot_i386 payload_uboot_amd64 payload_grubsea"
+pv="payload_seabios payload_memtest payload_grub payload_grubsea"
 v="initmode ubootelf grub_scan_disk uboot_config grubtree grubelf pname"
-v="$v displaymode tmprom newrom"
+v="$v displaymode tmprom newrom payload_uboot"
 eval `setvars "n" $pv`
 eval `setvars "" $v`
 
diff --git a/include/rom.sh b/include/rom.sh
index 1c39979d..eedd05d3 100644
--- a/include/rom.sh
+++ b/include/rom.sh
@@ -94,21 +94,16 @@ mkcorebootbin()
 	initmode="${initmode%%_*}"
 	cbfstool="elf/cbfstool/$tree/cbfstool"
 
-	[ "$payload_uboot_i386" = "y" ] && \
-	    [ "$payload_uboot_amd64" = "y" ] && \
-		err "'$target' enables 32- and 64-bit x86 U-Boot"
+	[ -z "$payload_uboot" ] || [ "$payload_uboot" = "amd64" ] || \
+	    [ "$payload_uboot" = "i386" ] || [ "$payload_uboot" = "arm64" ] \
+		|| err "'$target' defines bad u-boot type '$payload_uboot'"
 
-	if [ "$payload_uboot_i386" = "y" ] || \
-	    [ "$payload_uboot_amd64" = "y" ]; then
-		printf "'%s' has x86 U-Boot; assuming SeaBIOS=y\n" \
-		    "$target" 1>&2
+	[ -z "$payload_uboot" ] || [ "$payload_uboot" = "arm64" ] || \
 		payload_seabios="y"
-	fi
 
 	[ -n "$uboot_config" ] || uboot_config="default"
-	[ "$payload_uboot" = "y" ] || payload_seabios="y"
 	[ "$payload_grub" = "y" ] && payload_seabios="y"
-	[ "$payload_seabios" = "y" ] && [ "$payload_uboot" = "y" ] && \
+	[ "$payload_seabios" = "y" ] && [ "$payload_uboot" = "arm64" ] && \
 	    $dry err "$target: U-Boot(arm64) and SeaBIOS/GRUB both enabled."
 
 	[ -z "$grub_scan_disk" ] && grub_scan_disk="nvme ahci ata"
@@ -126,7 +121,8 @@ mkcorebootbin()
 	if $dry grep "CONFIG_PAYLOAD_NONE=y" "$defconfig"; then
 		[ "$payload_seabios" = "y" ] && pname="seabios" && \
 		    $dry add_seabios
-		[ "$payload_uboot" = "y" ] && pname="uboot" && $dry add_uboot
+		[ "$payload_uboot" = "arm64" ] && pname="uboot" && \
+		    $dry add_uboot; :
 	else
 		pname="custom"
 		$dry cprom
@@ -135,10 +131,8 @@ mkcorebootbin()
 
 add_seabios()
 {
-	if [ "$payload_uboot_i386" = "y" ] || \
-	    [ "$payload_uboot_amd64" = "y" ]; then
-		$dry add_uboot
-	fi
+	[ -z "$payload_uboot" ] || [ "$payload_uboot" = "arm64" ] || \
+	    $dry add_uboot
 
 	_seabioself="elf/seabios/default/$initmode/bios.bin.elf"
 	_seaname="fallback/payload" && [ "$payload_grubsea" = "y" ] && \
@@ -159,7 +153,7 @@ add_seabios()
 	[ "$payload_grub" = "y" ] && add_grub
 
 	[ "$payload_grubsea" != "y" ] && cprom
-	[ "$payload_uboot_amd64" = "y" ] && [ "$displaymode" != "txtmode" ] && \
+	[ "$payload_uboot" = "amd64" ] && [ "$displaymode" != "txtmode" ] && \
 	    [ "$initmode" != "normal" ] && [ "$payload_grubsea" != "y" ] && \
 	    pname="seauboot" && cprom "seauboot"
 	[ "$payload_grub" = "y" ] && pname="seagrub" && mkseagrub; :
@@ -206,14 +200,13 @@ add_uboot()
 	ubpath="fallback/payload"
 	ubtarget="$target"
 	# override for x86/x86_64 targets:
-	if [ "$payload_uboot_i386" = "y" ] || \
-	    [ "$payload_uboot_amd64" = "y" ]; then
+	if [ -n "$payload_uboot" ] && [ "$payload_uboot" != "arm64" ]; then
 		ubcbfsargs="-l 0x1110000 -e 0x1110000" # 64-bit and 32-bit
 			# on 64-bit, 0x1120000 is the SPL, and stub before that
 		ubpath="img/u-boot" # 64-bit
 		ubtarget="amd64coreboot"
-		[ "$payload_uboot_i386" = "y" ] && ubpath="u-boot" # 32-bit
-		[ "$payload_uboot_i386" = "y" ] && ubtarget="i386coreboot"; :
+		[ "$payload_uboot" = "i386" ] && ubpath="u-boot" # 32-bit
+		[ "$payload_uboot" = "i386" ] && ubtarget="i386coreboot"; :
 	fi
 
 	ubdir="elf/u-boot/$ubtarget/$uboot_config"
@@ -222,8 +215,8 @@ add_uboot()
 	ubootelf="$ubdir/u-boot.elf" && [ ! -f "$ubootelf" ] && \
 	    ubootelf="$ubdir/u-boot"
 	# override for x86/x86_64 targets:
-	[ "$payload_uboot_i386" = "y" ] && ubootelf="$ubdir/u-boot-dtb.bin"
-	[ "$payload_uboot_amd64" = "y" ] && \
+	[ "$payload_uboot" = "i386" ] && ubootelf="$ubdir/u-boot-dtb.bin"
+	[ "$payload_uboot" = "amd64" ] && \
 	    ubootelf="$ubdir/u-boot-x86-with-spl.bin" # EFI-compatible
 
 	cbfs "$tmprom" "$ubootelf" "$ubpath" $ubcbfsargs