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Merge commit 'e535f53981da1fe80137504c761bc854ea8be356' into sam-update

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This commit is contained in:
Jason Kotzin 2022-08-10 22:30:11 -07:00
commit 2a792399ca
1 changed files with 107 additions and 71 deletions
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82
src/target/ch32f1.c
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@ -1,14 +1,37 @@
/*
* This file is part of the Black Magic Debug project.
*
* Copyright (C) 2022 Black Sphere Technologies Ltd.
* See CH32 Sample code from WCH StdPeriphLib_CH32F1/Examples/FLASH/FLASH_Program
* Copyright (C) 2011 Black Sphere Technologies Ltd.
* Written by Gareth McMullin <gareth@blacksphere.co.nz>
*
* The CH32 seems to like the EOP bit to be cleared at the end of erase/flash operation
* The following code works fine in BMP hosted mode
* It does NOT work with a real BMP, only the first 128 bytes block is successfully written
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* This file implements CH32F1xx target specific functions.
The ch32 flash is rather slow so this code is using the so called fast mode (ch32 specific).
128 bytes are copied to a write buffer, then the write buffer is committed to flash
/!\ There is some sort of bus stall/bus arbitration going on that does NOT work when
programmed through SWD/jtag
The workaround is to wait a few cycles before filling the write buffer. This is performed by reading the flash a few times
*/
#include "general.h"
#include "target.h"
#include "target_internal.h"
#include "cortexm.h"
#if PC_HOSTED == 1
#define DEBUG_CH DEBUG_INFO
#define ERROR_CH DEBUG_WARN
@ -17,13 +40,34 @@
#define ERROR_CH DEBUG_WARN //DEBUG_WARN
#endif
extern const struct command_s stm32f1_cmd_list[]; // Reuse stm32f1 stuff
static int ch32f1_flash_erase(struct target_flash *f,
target_addr addr, size_t len);
static int ch32f1_flash_write(struct target_flash *f,
target_addr dest, const void *src, size_t len);
#define FLASH_MODEKEYR_CH32 (FPEC_BASE+0x24) // Fast mode for CH32F10x
// these are common with stm32f1/gd32f1/...
#define FPEC_BASE 0x40022000
#define FLASH_ACR (FPEC_BASE+0x00)
#define FLASH_KEYR (FPEC_BASE+0x04)
#define FLASH_SR (FPEC_BASE+0x0C)
#define FLASH_CR (FPEC_BASE+0x10)
#define FLASH_AR (FPEC_BASE+0x14)
#define FLASH_CR_LOCK (1 << 7)
#define FLASH_CR_STRT (1 << 6)
#define FLASH_SR_BSY (1 << 0)
#define KEY1 0x45670123
#define KEY2 0xCDEF89AB
#define SR_ERROR_MASK 0x14
#define SR_EOP 0x20
#define DBGMCU_IDCODE 0xE0042000
#define FLASHSIZE 0x1FFFF7E0
// these are specific to ch32f1
#define FLASH_MAGIC (FPEC_BASE+0x34)
#define FLASH_MODEKEYR_CH32 (FPEC_BASE+0x24) // Fast mode for CH32F10x
#define FLASH_CR_FLOCK_CH32 (1<<15) // fast unlock
#define FLASH_CR_FTPG_CH32 (1<<16) // fast page program
#define FLASH_CR_FTER_CH32 (1<<17) // fast page erase
@ -31,9 +75,9 @@
#define FLASH_CR_BUF_RESET_CH32 (1<<19) // Buffer reset
#define FLASH_SR_EOP (1<<5) // End of programming
#define FLASH_BEGIN_ADDRESS_CH32 0x8000000
#define FLASH_MAGIC (FPEC_BASE+0x34)
static volatile uint32_t magic,sr,ct;
/**
\fn ch32f1_add_flash
@ -57,10 +101,6 @@ static void ch32f1_add_flash(target *t, uint32_t addr, size_t length, size_t era
target_add_flash(t, f);
}
#define WAIT_BUSY() do { \
sr = target_mem_read32(t, FLASH_SR); \
if(target_check_error(t)) { \
@ -90,7 +130,7 @@ static void ch32f1_add_flash(target *t, uint32_t addr, size_t length, size_t era
// Which one is the right value ?
#define MAGIC_WORD 0x100
// #define MAGIC_WORD 0x100
// #define MAGIC_WORD 0x1000
#define MAGIC(adr) { magic=target_mem_read32(t,(adr) ^ MAGIC_WORD); \
target_mem_write32(t, FLASH_MAGIC , magic); }
@ -108,8 +148,7 @@ static int ch32f1_flash_unlock(target *t)
target_mem_write32(t, FLASH_MODEKEYR_CH32 , KEY1);
target_mem_write32(t, FLASH_MODEKEYR_CH32 , KEY2);
uint32_t cr = target_mem_read32(t, FLASH_CR);
if (cr & FLASH_CR_FLOCK_CH32)
{
if (cr & FLASH_CR_FLOCK_CH32){
ERROR_CH("Fast unlock failed, cr: 0x%08" PRIx32 "\n", cr);
return -1;
}
@ -117,6 +156,7 @@ static int ch32f1_flash_unlock(target *t)
}
static int ch32f1_flash_lock(target *t)
{
volatile uint32_t ct;
DEBUG_CH("CH32: flash lock \n");
SET_CR(FLASH_CR_LOCK);
return 0;
@ -143,7 +183,6 @@ bool ch32f1_probe(target *t)
return false;
}
uint32_t signature = target_mem_read32(t, FLASHSIZE);
uint32_t flashSize = signature & 0xFFFF;
@ -151,9 +190,6 @@ bool ch32f1_probe(target *t)
ch32f1_add_flash(t, FLASH_BEGIN_ADDRESS_CH32, flashSize*1024, 128);
target_add_commands(t, stm32f1_cmd_list, "STM32 LD/MD/VL-LD/VL-MD");
t->driver = "CH32F1 medium density (stm32f1 clone)";
// make sure we have 2 wait states
//target_mem_write32(t, FLASH_ACR,2);
return true;
}
/**
@ -162,12 +198,10 @@ bool ch32f1_probe(target *t)
*/
int ch32f1_flash_erase (struct target_flash *f, target_addr addr, size_t len)
{
volatile uint32_t ct, sr, magic;
target *t = f->t;
DEBUG_CH("CH32: flash erase \n");
// Make sure we have 2 wait states, prefetch disabled
//target_mem_write32(t, FLASH_ACR , 2);
if (ch32f1_flash_unlock(t)) {
ERROR_CH("CH32: Unlock failed\n");
return -1;
@ -209,7 +243,6 @@ int ch32f1_flash_erase (struct target_flash *f, target_addr addr, size_t len)
static bool ch32f1_wait_flash_ready(target *t,uint32_t adr)
{
uint32_t ff;
for(int i = 0; i < 32; i++) {
ff = target_mem_read32(t,adr);
@ -227,6 +260,7 @@ static bool ch32f1_wait_flash_ready(target *t,uint32_t adr)
static int ch32f1_upload(target *t, uint32_t dest, const void *src, uint32_t offset)
{
volatile uint32_t ct, sr, magic;
const uint32_t *ss = (const uint32_t *)(src+offset);
uint32_t dd = dest+offset;
@ -248,6 +282,7 @@ static int ch32f1_upload(target *t, uint32_t dest, const void *src, uint32_t of
*/
int ch32f1_buffer_clear(target *t)
{
volatile uint32_t ct,sr;
SET_CR(FLASH_CR_FTPG_CH32); // Fast page program 4-
SET_CR(FLASH_CR_BUF_RESET_CH32); // BUF_RESET 5-
WAIT_BUSY(); // 6-
@ -262,6 +297,7 @@ int ch32f1_buffer_clear(target *t)
static int ch32f1_flash_write(struct target_flash *f,
target_addr dest, const void *src, size_t len)
{
volatile uint32_t ct, sr, magic;
target *t = f->t;
size_t length = len;
#ifdef CH32_VERIFY