From: Hiago De Franco <hiago.fra...@toradex.com>
The current value of CONFIG_FASTBOOT_BUF_ADDR is incorrect for hardware
with 512MB and 1GB of RAM. The RAM address ranges for these devices are:
- 512MB:
- Start: 0x80000000
- End: 0xA0000000
- 1GB:
- Start: 0x80000000
- End: 0xC0000000
The current buffer address makes fastboot downloads work only on
hardware with 2GB of RAM.
To fix this issue:
1. Lower CONFIG_FASTBOOT_BUF_ADDR to 0x80080000. This places the buffer
near the beginning of RAM with a 512KB offset, as starting at exactly
0x80000000 conflicts with the ATF load address. Following
K3_ATF_LOAD_ADDR configuration, ATF is loaded at 0x80000000:
config K3_ATF_LOAD_ADDR
hex "Load address of ATF image"
default 0x80000000 if (SOC_K3_AM625 || SOC_K3_AM62A7 || SOC_K3_AM62P5 ||
SOC_K3_J722S)
default 0x70000000
help
The load address for the ATF image. This value is used to build the
FIT image header that places ATF in memory where it will run.
2. Reduce the size of the download buffer to 128MB, avoiding overlaps
with RAMDISK_ADDR_R. This is a good enough value for individual
downloads.
Theses changes make fastboot downloads work with 512MB and 1GB devices.
Fixes: defe30a78b76 ("verdin-am62: add DFU, USB and UUU fastboot support")
Signed-off-by: Hiago De Franco <hiago.fra...@toradex.com>
---
configs/verdin-am62_a53_defconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/configs/verdin-am62_a53_defconfig
b/configs/verdin-am62_a53_defconfig
index 49fb9790e295..6fa1a9d2c552 100644
--- a/configs/verdin-am62_a53_defconfig
+++ b/configs/verdin-am62_a53_defconfig
@@ -122,8 +122,8 @@ CONFIG_SYS_DFU_MAX_FILE_SIZE=0x800000
CONFIG_DMA_CHANNELS=y
CONFIG_TI_K3_NAVSS_UDMA=y
CONFIG_USB_FUNCTION_FASTBOOT=y
-CONFIG_FASTBOOT_BUF_ADDR=0xC0000000
-CONFIG_FASTBOOT_BUF_SIZE=0x2F000000
+CONFIG_FASTBOOT_BUF_ADDR=0x80080000
+CONFIG_FASTBOOT_BUF_SIZE=0x8000000
CONFIG_FASTBOOT_UUU_SUPPORT=y
CONFIG_TI_SCI_PROTOCOL=y
CONFIG_GPIO_HOG=y
--
2.39.5
