EV3 linker cleanup

bricks/_common/arm_none_eabi.mk

@@ -510,7 +510,9 @@ NXOS_SRC_S = $(addprefix lib/pbio/platform/nxt/nxos/,\
 	irq.s \
 	)
 
+ifneq ($(PB_MCU_FAMILY),TIAM1808)
 SRC_S += lib/pbio/platform/$(PBIO_PLATFORM)/startup.s
+endif
 
 OBJ = $(PY_O)
 OBJ += $(addprefix $(BUILD)/, $(SRC_S:.s=.o))

lib/pbio/drv/display/display_ev3.c

@@ -134,7 +134,7 @@ PROCESS(pbdrv_display_ev3_init_process, "st7586s");
  *
  * Non-atomic updated by the application are allowed.
  */
-static uint8_t pbdrv_display_user_frame[PBDRV_CONFIG_DISPLAY_NUM_ROWS][PBDRV_CONFIG_DISPLAY_NUM_COLS] __attribute__((section(".pbdrv_display_user_frame"), used));
+static uint8_t pbdrv_display_user_frame[PBDRV_CONFIG_DISPLAY_NUM_ROWS][PBDRV_CONFIG_DISPLAY_NUM_COLS] __attribute__((section(".noinit"), used));
 
 /**
  * Flag to indicate that the user frame has been updated and needs to be
@@ -164,7 +164,7 @@ static bool pbdrv_display_user_frame_update_requested = false;
  * Even in monochrome mode, you can only have 3 pixels per byte, so there is no
  * savings in using it. We might as well support gray scale.
  */
-static uint8_t st7586s_send_buf[ST7586S_NUM_COL_TRIPLETS * ST7586S_NUM_ROWS] __attribute__((section(".st7586s_send_buf"), used));
+static uint8_t st7586s_send_buf[ST7586S_NUM_COL_TRIPLETS * ST7586S_NUM_ROWS] __attribute__((section(".noinit"), used));
 
 /**
  * Encode a triplet of pixels into a single byte in the format descrived above.

lib/pbio/platform/ev3/platform.ld

@@ -10,17 +10,11 @@ MEMORY
     DDR        (rwx) : ORIGIN = 0xC0008000, LENGTH = (64M - 0x8000)
 }
 
-_minimal_stack_size = 64K;
+_minimal_stack_size = 4M;
 pbdrv_stack_end = ORIGIN(DDR) + LENGTH(DDR) - 4;
 
 SECTIONS
 {
-    .startcode :
-    {
-        . = ALIGN(4);
-        *startup.o (.text)
-    } > DDR
-
     .text :
     {
         . = ALIGN(4);
@@ -51,14 +45,6 @@ SECTIONS
         _pru0_end = .;
     } >DDR
 
-    .display_frames (NOLOAD) :
-    {
-        . = ALIGN(4);
-        *(.pbdrv_display_user_frame)
-        . = ALIGN(4);
-        *(.st7586s_send_buf)
-    } > DDR
-
     /* Uninitialized (not zeroed at startup) data section */
 
     .noinit (NOLOAD) :