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Merge pull request #5035 from tannewt/correct_a2040_flash 

Fix Arduino RP2040 flash size
This commit is contained in:
Dan Halbert 2021-07-21 15:53:50 -04:00 committed by GitHub
parent 8723a0335f 109bd2886b
commit 10645bf538
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 27 additions and 1 deletions
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6
ports/raspberrypi/Makefile
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@ -260,6 +260,12 @@ $(BUILD)/stage2.c: stage2.c.jinja gen_stage2.py | $(BUILD)/
$(STEPECHO) "GEN $<"
$(Q)$(PYTHON3) gen_stage2.py $< $@ $(EXTERNAL_FLASH_DEVICES)
$(HEADER_BUILD)/flash_info.h: flash_info.h.jinja gen_stage2.py | $(HEADER_BUILD)/
$(STEPECHO) "GEN $<"
$(Q)$(PYTHON3) gen_stage2.py $< $@ $(EXTERNAL_FLASH_DEVICES)
$(BUILD)/supervisor/internal_flash.o: $(HEADER_BUILD)/flash_info.h
$(BUILD)/boot2.elf: $(BUILD)/stage2.c
$(STEPECHO) "BOOT $<"
$(Q)$(CC) $(CFLAGS) $(BOOT2_S_CFLAGS) -Os -ggdb3 -I. -fPIC --specs=nosys.specs -nostartfiles -Wl,-T,boot_stage2.ld -Wl,-Map=$@.map -o $@ $<

5
ports/raspberrypi/flash_info.h.jinja Normal file
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@ -0,0 +1,5 @@
// This file is auto-generated using gen_stage2.py
#pragma once
#define FLASH_DEFAULT_POWER_OF_TWO {{ default_power_of_two }}

14
ports/raspberrypi/gen_stage2.py
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@ -1,3 +1,4 @@
import math
import sys
import cascadetoml
import pathlib
@ -46,6 +47,18 @@ def main(input_template: pathlib.Path, output_path: pathlib.Path, skus: str = ty
max_clock_speed_mhz = min((x.get("max_clock_speed_mhz", 1000) for x in flashes["nvm"]))
default_power_of_two = None
for nvm in flashes["nvm"]:
capacity = nvm.get("capacity", 0)
if not 21 <= capacity < 30:
power_of_two = int(math.log2(nvm["total_size"]))
if not default_power_of_two:
default_power_of_two = power_of_two
else:
default_power_of_two = min(power_of_two, default_power_of_two)
if not default_power_of_two:
default_power_of_two = 21
# Check that we have a consistent way to set quad enable.
if continuous_status_write is None and split_status_write is None:
print("quad not ok", continuous_status_write, split_status_write)
@ -71,6 +84,7 @@ def main(input_template: pathlib.Path, output_path: pathlib.Path, skus: str = ty
"clock_divider": clock_divider,
"read_command": read_command,
"wait_cycles": wait_cycles,
"default_power_of_two": default_power_of_two,
}
template = Template(input_template.read_text())

3
ports/raspberrypi/supervisor/internal_flash.c
View File

@ -32,6 +32,7 @@
#include "extmod/vfs.h"
#include "extmod/vfs_fat.h"
#include "genhdr/flash_info.h"
#include "py/mphal.h"
#include "py/obj.h"
#include "py/runtime.h"
@ -68,7 +69,7 @@ void supervisor_flash_init(void) {
uint8_t cmd[] = {0x9f, 0, 0, 0};
uint8_t data[4];
flash_do_cmd(cmd, data, 4);
uint8_t power_of_two = 21;
uint8_t power_of_two = FLASH_DEFAULT_POWER_OF_TWO;
// Flash must be at least 2MB (1 << 21) because we use the first 1MB for the
// CircuitPython core. We validate the range because Adesto Tech flash chips
// don't return the correct value. So, we default to 2MB which will work for