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Configure the number of pages in the board

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This permits to have portable apps.
This commit is contained in:
Julien Cretin
2021-08-15 22:39:13 +02:00
committed by Julien Cretin
parent c1f2551d0d
commit 2d5fdd1034
12 changed files with 77 additions and 79 deletions
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17
src/embedded_flash/syscall.rs
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@@ -134,13 +134,11 @@ impl SyscallStorage {
/// - The page size is a power of two.
/// - The page size is a multiple of the word size.
/// - The storage is page-aligned.
///
/// Returns `OutOfBounds` the number of pages does not fit in the storage.
pub fn new(mut num_pages: usize) -> StorageResult<SyscallStorage> {
pub fn new() -> StorageResult<SyscallStorage> {
let mut syscall = SyscallStorage {
word_size: get_info(command_nr::get_info_nr::WORD_SIZE, 0)?,
page_size: get_info(command_nr::get_info_nr::PAGE_SIZE, 0)?,
num_pages,
num_pages: 0,
max_word_writes: get_info(command_nr::get_info_nr::MAX_WORD_WRITES, 0)?,
max_page_erases: get_info(command_nr::get_info_nr::MAX_PAGE_ERASES, 0)?,
storage_locations: Vec::new(),
@@ -156,20 +154,15 @@ impl SyscallStorage {
continue;
}
let storage_ptr = memop(memop_nr::STORAGE_PTR, i)?;
let max_storage_len = memop(memop_nr::STORAGE_LEN, i)?;
if !syscall.is_page_aligned(storage_ptr) || !syscall.is_page_aligned(max_storage_len) {
let storage_len = memop(memop_nr::STORAGE_LEN, i)?;
if !syscall.is_page_aligned(storage_ptr) || !syscall.is_page_aligned(storage_len) {
return Err(StorageError::CustomError);
}
let storage_len = core::cmp::min(num_pages * syscall.page_size, max_storage_len);
num_pages -= storage_len / syscall.page_size;
syscall.num_pages += storage_len / syscall.page_size;
syscall
.storage_locations
.push(unsafe { core::slice::from_raw_parts(storage_ptr as *mut u8, storage_len) });
}
if num_pages > 0 {
// The storage locations don't have enough pages.
return Err(StorageError::OutOfBounds);
}
Ok(syscall)
}