U-Boot uses the following memory types:
- MPC8xx: IMMR (internal memory of the CPU)
-- CONFIG_SYS_GBL_DATA_OFFSET:
-
- Offset of the initial data structure in the memory
- area defined by CONFIG_SYS_INIT_RAM_ADDR. Usually
- CONFIG_SYS_GBL_DATA_OFFSET is chosen such that the initial
- data is located at the end of the available space
- (sometimes written as (CONFIG_SYS_INIT_RAM_SIZE -
- GENERATED_GBL_DATA_SIZE), and the initial stack is just
- below that area (growing from (CONFIG_SYS_INIT_RAM_ADDR +
- CONFIG_SYS_GBL_DATA_OFFSET) downward.
-
- Note:
- On the MPC824X (or other systems that use the data
- cache for initial memory) the address chosen for
- CONFIG_SYS_INIT_RAM_ADDR is basically arbitrary - it must
- point to an otherwise UNUSED address space between
- the top of RAM and the start of the PCI space.
-
- CONFIG_SYS_SCCR: System Clock and reset Control Register (15-27)
- CONFIG_SYS_OR_TIMING_SDRAM:
0;
/* Pointer is writable since we allocated a register for it */
- gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
+ gd = (gd_t *)CONFIG_SYS_INIT_SP_ADDR;
/* global data region was cleared in start.S */
void cpu_init_f (volatile immap_t * im)
{
/* Pointer is writable since we allocated a register for it */
- gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
+ gd = (gd_t *)CONFIG_SYS_INIT_SP_ADDR;
/* global data region was cleared in start.S */
/* set up the stack pointer in our newly created
* cache-ram; use r3 to keep the new SP for now to
* avoid overiding the SP it uselessly */
- lis r3, (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET)@h
- ori r3, r3, (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET)@l
+ lis r3, CONFIG_SYS_INIT_SP_ADDR@h
+ ori r3, r3, CONFIG_SYS_INIT_SP_ADDR@l
/* r4 = end of GD area */
addi r4, r3, GENERATED_GBL_DATA_SIZE
#endif
/* Pointer is writable since we allocated a register for it */
- gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
+ gd = (gd_t *)CONFIG_SYS_INIT_SP_ADDR;
/* gd area was zeroed during startup */
bne 1b
#if CONFIG_VAL(SYS_MALLOC_F_LEN)
- lis r4,(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET)@h
- ori r4,r4,(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET)@l
+ lis r4,CONFIG_SYS_INIT_SP_ADDR@h
+ ori r4,r4,CONFIG_SYS_INIT_SP_ADDR@l
addi r3,r3,16 /* Pre-relocation malloc area */
stw r3,GD_MALLOC_BASE(r4)
#define CONFIG_SYS_INIT_RAM_LOCK 1
#define CONFIG_SYS_INIT_RAM_ADDR 0xE6000000 /* Initial RAM address */
#define CONFIG_SYS_INIT_RAM_SIZE 0x1000 /* Size of used area in RAM */
-#define CONFIG_SYS_GBL_DATA_OFFSET \
- (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
/*
* FLASH on the Local Bus
#define CONFIG_SYS_INIT_RAM_ADDR 0xe4010000 /* Initial RAM address */
#define CONFIG_SYS_INIT_RAM_SIZE 0x4000 /* Size of used area in RAM */
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN (512 * 1024)
#define CONFIG_SYS_INIT_RAM_ADDR 0xffd00000 /* stack in RAM */
#define CONFIG_SYS_INIT_RAM_SIZE 0x00004000 /* End of used area in RAM */
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE \
- - GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN (768 * 1024)
#endif
#define CONFIG_SYS_INIT_RAM_SIZE 0x00004000
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
- GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN (768 * 1024)
#endif
#define CONFIG_SYS_INIT_RAM_SIZE 0x00004000
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
- GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN (768 * 1024)
CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW)
#define CONFIG_SYS_INIT_RAM_SIZE 0x00004000
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
- GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN (768 * 1024)
((CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH * 1ull << 32) | \
CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW)
#define CONFIG_SYS_INIT_RAM_SIZE 0x00004000
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
- GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN (768 * 1024)
/*
((CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH * 1ull << 32) | \
CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW)
#define CONFIG_SYS_INIT_RAM_SIZE 0x00004000
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
- GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN (768 * 1024)
/*
CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW)
#define CONFIG_SYS_INIT_RAM_SIZE 0x00004000
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
- GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN (768 * 1024)
#endif
#define CONFIG_SYS_INIT_RAM_SIZE 0x00004000 /* Size of used area in RAM */
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN (768 * 1024)
#define CONFIG_SYS_INIT_RAM_LOCK
#define CONFIG_SYS_INIT_RAM_ADDR 0xE6000000 /* Initial RAM address */
#define CONFIG_SYS_INIT_RAM_SIZE 0x1000 /* Size of used area in RAM */
-#define CONFIG_SYS_GBL_DATA_OFFSET \
- (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
/*
* FLASH on the Local Bus
#define CONFIG_SYS_INIT_RAM_LOCK
#define CONFIG_SYS_INIT_RAM_ADDR 0xFD000000
#define CONFIG_SYS_INIT_RAM_SIZE 0x1000 /* End of used area in DPRAM */
-#define CONFIG_SYS_GBL_DATA_SIZE 0x100
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE \
- - CONFIG_SYS_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
/*
* Internal Definitions
#define CONFIG_SYS_INIT_RAM_LOCK
#define CONFIG_SYS_INIT_RAM_ADDR 0xE6000000 /* Initial RAM address */
#define CONFIG_SYS_INIT_RAM_SIZE 0x1000 /* End of used area in RAM */
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
- GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
/*
* Init Local Bus Memory Controller:
*
CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW)
#define CONFIG_SYS_INIT_RAM_SIZE 0x00004000
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
- GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN 0xc0000 /* 768k */
/* Size of used area in RAM */
#define CONFIG_SYS_INIT_RAM_SIZE 0x00004000
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
- GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN (768 * 1024)
CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW)
#define CONFIG_SYS_INIT_RAM_SIZE 0x00004000
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - \
- GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN (512 * 1024)
#define CONFIG_SYS_INIT_RAM_ADDR 0xe4010000 /* Initial RAM address */
#define CONFIG_SYS_INIT_RAM_SIZE 0x4000 /* Size used area in RAM*/
-#define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
+#define CONFIG_SYS_INIT_SP_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
#define CONFIG_SYS_MONITOR_LEN (384 * 1024) /* Reserve 384KiB for Mon */