RomanRom2/ossc
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first version booting from flash

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marqs committed 2025-03-26 23:30:42 +02:00
1 parent 429b0f7201
commit e74da07802
53 files changed
+5048 -4961
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scripts/rv-reprogram.tcl
+61 -3
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@@ -1,3 +1,25 @@
# flash details
set flash_base 0x02000000
set flash_imem_offset 0x00080000
set flash_imem_base [format 0x%.8x [expr $flash_base + $flash_imem_offset]]
set flash_secsize 65536
# flash controller register addresses
set control_register 0x00020100
set operating_protocols_setting 0x00020110
set read_instr 0x00020114
set write_instr 0x00020118
set flash_cmd_setting 0x0002011c
set flash_cmd_ctrl 0x00020120
set flash_cmd_addr_register 0x00020124
set flash_cmd_write_data_0 0x00020128
set flash_cmd_read_data_0 0x00020130
# target file details
set bin_file mem_init/flash.bin
set bin_size [file size $bin_file]
set num_sectors [expr ($bin_size / $flash_secsize) + (($bin_size % $flash_secsize) ne 0)]
#Select the master service type and check for available service paths.
while 1 {
set service_paths [get_service_paths master]
@@ -16,10 +38,46 @@ set master_service_path [lindex $service_paths 0]
set claim_path [claim_service master $master_service_path mylib]
puts "Halting CPU"
master_write_32 $claim_path 0x0 0x10000
master_write_32 $claim_path 0x40 0x00000001
master_write_32 $claim_path 0x40 0x80000001
puts "Writing block RAM"
master_write_from_file $claim_path mem_init/sys_onchip_memory2_0.bin 0x10000
#write enable
master_write_32 $claim_path $flash_cmd_setting 0x00000006
master_write_32 $claim_path $flash_cmd_ctrl 0x1
#write status register (clear BP)
master_write_32 $claim_path $flash_cmd_setting 0x00001001
#master_write_32 $claim_path $flash_cmd_write_data_0 0x0000005c
master_write_32 $claim_path $flash_cmd_write_data_0 0x00000000
master_write_32 $claim_path $flash_cmd_ctrl 0x1
puts "Erasing $num_sectors flash sectors"
set addr $flash_imem_offset
for {set i 0} {$i<$num_sectors} {incr i} {
master_write_32 $claim_path $flash_cmd_setting 0x00000006
master_write_32 $claim_path $flash_cmd_ctrl 0x1
master_write_32 $claim_path $flash_cmd_setting 0x000003D8
master_write_32 $claim_path $flash_cmd_addr_register $addr
master_write_32 $claim_path $flash_cmd_ctrl 0x1
set addr [expr $addr + $flash_secsize]
after 500
}
puts "Writing flash"
# writes garbage and occasionally hangs (bug in generic serial flash IF?)
#master_write_from_file $claim_path mem_init/flash.bin $flash_imem_base
# work around the issue by writing into small chunks so that FIFO does not fill up
set chunks [llength [glob mem_init/chunks/*]]
puts "Programming $chunks chunks"
set addr $flash_imem_base
for {set i 0} {$i<$chunks} {incr i} {
set file [format "flash.%04d" $i]
master_write_from_file $claim_path mem_init/chunks/$file $addr
set addr [expr $addr + 64]
}
#master_read_to_file $claim_path mem_init/flash_readback.bin $flash_imem_base $bin_size
#master_read_to_file $claim_path mem_init/ram_readback.bin 0x010000 65536
close_service master $claim_path