bstanwell/wch-uf2-example
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everything now in lds

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R
2024-04-14 07:42:09 +01:00
parent b38aab0040
commit 688dc3c871
2 changed files with 21 additions and 9 deletions
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bootloader.c
+15 -9
View File
@@ -161,6 +161,12 @@ extern volatile uint32_t USB_EP1_IN[32];
#define USB_EP1_IN_OLDOLD(offs) (*(volatile uint32_t *)(0x400060C0 + 2 * (offs)))
#define USB_UF2_FIELDS_STASH(offs) (*(uint32_t *)(0x400061d4 + 2 * (offs)))
extern uint32_t BLOCKNUM_LO;
extern uint32_t BLOCKNUM_HI;
extern uint32_t TOTBLOCKS_LO;
extern uint32_t TOTBLOCKS_HI;
extern uint32_t ADDRESS_LO;
extern uint32_t ADDRESS_HI;
extern uint32_t ACTIVE_CONFIG;
extern uint32_t UF2_BLOCKS_LEFT;
extern uint32_t CTRL_XFER_STATE;
@@ -727,12 +733,12 @@ __attribute__((naked)) int main(void) {
if (!(flags & 1) && bytes == 256 && (address & 0xff) == 0) {
if (flags & (0x2000) && familyid == FAMILY_ID) {
// uf2 good so far!
USB_UF2_FIELDS_STASH(0) = USB_EP1_OUT[10];
USB_UF2_FIELDS_STASH(2) = USB_EP1_OUT[11];
USB_UF2_FIELDS_STASH(4) = USB_EP1_OUT[12];
USB_UF2_FIELDS_STASH(6) = USB_EP1_OUT[13];
USB_UF2_FIELDS_STASH(8) = USB_EP1_OUT[6];
USB_UF2_FIELDS_STASH(10) = USB_EP1_OUT[7];
BLOCKNUM_LO = USB_EP1_OUT[10];
BLOCKNUM_HI = USB_EP1_OUT[11];
TOTBLOCKS_LO = USB_EP1_OUT[12];
TOTBLOCKS_HI = USB_EP1_OUT[13];
ADDRESS_LO = USB_EP1_OUT[6];
ADDRESS_HI = USB_EP1_OUT[7];
for (int i = 0; i < 16; i++)
USB_SECTOR_STASH[i] = USB_EP1_OUT[16 + i];
@@ -757,9 +763,9 @@ __attribute__((naked)) int main(void) {
if (msc_state & 0x1000) {
if (USB_EP1_OUT[30] == 0x6F30 && USB_EP1_OUT[31] == 0x0AB1) {
// uf2 all magics are good!
uint32_t blocknum = USB_UF2_FIELDS_STASH(0) | (USB_UF2_FIELDS_STASH(2) << 16);
uint32_t totblocks = USB_UF2_FIELDS_STASH(4) | (USB_UF2_FIELDS_STASH(6) << 16);
uint32_t address = USB_UF2_FIELDS_STASH(8) | (USB_UF2_FIELDS_STASH(10) << 16);
uint32_t blocknum = BLOCKNUM_LO | (BLOCKNUM_HI << 16);
uint32_t totblocks = TOTBLOCKS_LO | (TOTBLOCKS_HI << 16);
uint32_t address = ADDRESS_LO | (ADDRESS_HI << 16);
if (UF2_BLOCKS_LEFT == 0)
UF2_BLOCKS_LEFT = (totblocks - 1) | 0x8000;
linker.lds
+6
View File
@@ -38,6 +38,12 @@ SECTIONS
PROVIDE( USB_EP0_IN = 0x40006030 );
PROVIDE( USB_EP1_OUT = 0x40006040 );
PROVIDE( USB_EP1_IN = 0x400060c0 );
PROVIDE( BLOCKNUM_LO = 0x400061d4 );
PROVIDE( BLOCKNUM_HI = 0x400061d8 );
PROVIDE( TOTBLOCKS_LO = 0x400061dc );
PROVIDE( TOTBLOCKS_HI = 0x400061e0 );
PROVIDE( ADDRESS_LO = 0x400061e4 );
PROVIDE( ADDRESS_HI = 0x400061e8 );
PROVIDE( ACTIVE_CONFIG = 0x400061ec );
PROVIDE( UF2_BLOCKS_LEFT = 0x400061f0 );
PROVIDE( CTRL_XFER_STATE = 0x400061f4 );