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esp32: Move hard firmware function addresses to the linker script

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This matches the way other firmware-provided functions are done.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
This commit is contained in:
Andy Ross 2018-02-09 14:48:02 -08:00 • committed by Anas Nashif
commit 57f30bd8cc
3 changed files with 10 additions and 11 deletions
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14
arch/xtensa/soc/esp32/esp32-mp.c
View file

@ -28,14 +28,6 @@
#define DPORT_APPCPU_RUNSTALL BIT(0)
#define DPORT_APPCPU_RESETTING BIT(0)
/* These calls are ROM-resident and have fixed addresses. No, I don't
* know how they plan on updating these portably either.
*/
typedef void (*esp32rom_call_t)(int);
static const esp32rom_call_t esp32rom_Cache_Flush = (void *)0x40009a14;
static const esp32rom_call_t esp32rom_Cache_Read_Enable = (void *)0x40009a84;
static const esp32rom_call_t esp32rom_ets_set_appcpu_boot_addr = (void *)0x4000689c;
struct cpustart_rec {
int cpu;
void (*fn)(int, void *);
@ -151,8 +143,8 @@ static void appcpu_start(void)
* definition, so we can skip that complexity and just call
* the ROM directly.
*/
esp32rom_Cache_Flush(1);
esp32rom_Cache_Read_Enable(1);
esp32_rom_Cache_Flush(1);
esp32_rom_Cache_Read_Enable(1);
RTC_CNTL_SW_CPU_STALL &= ~RTC_CNTL_SW_STALL_APPCPU_C1;
RTC_CNTL_OPTIONS0 &= ~RTC_CNTL_SW_STALL_APPCPU_C0;
@ -166,7 +158,7 @@ static void appcpu_start(void)
/* Seems weird that you set the boot address AFTER starting
* the CPU, but this is how they do it...
*/
esp32rom_ets_set_appcpu_boot_addr((uint32_t)appcpu_entry1);
esp32_rom_ets_set_appcpu_boot_addr((void *)appcpu_entry1);
}
void _arch_start_cpu(int cpu_num, k_thread_stack_t *stack, int sz,

3
arch/xtensa/soc/esp32/linker.ld
View file

@ -30,6 +30,9 @@ PROVIDE ( esp32_rom_uart_attach = 0x40008fd0 );
PROVIDE ( esp32_rom_intr_matrix_set = 0x4000681c );
PROVIDE ( esp32_rom_gpio_matrix_in = 0x40009edc );
PROVIDE ( esp32_rom_gpio_matrix_out = 0x40009f0c );
PROVIDE ( esp32_rom_Cache_Flush = 0x40009a14 );
PROVIDE ( esp32_rom_Cache_Read_Enable = 0x40009a84 );
PROVIDE ( esp32_rom_ets_set_appcpu_boot_addr = 0x4000689c );
MEMORY
{

4
arch/xtensa/soc/esp32/soc.h
View file

@ -26,4 +26,8 @@ extern void esp32_rom_uart_attach(void);
extern STATUS esp32_rom_uart_tx_one_char(u8_t chr);
extern STATUS esp32_rom_uart_rx_one_char(u8_t *chr);
extern void esp32_rom_Cache_Flush(int cpu);
extern void esp32_rom_Cache_Read_Enable(int cpu);
extern void esp32_rom_ets_set_appcpu_boot_addr(void *addr);
#endif /* __SOC_H__ */